Enerpac Pow'R-LOCK PL200 Series User manual

1
POWERFUL SOLUTIONS. GLOBAL FORCE.
Instruction Sheet
L4075 Rev. F 11/16
Pow’R-LOCK
™Portable Lift System
PL200 Series Models (air-operated)
Index:
English. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Español....................................21-39
Portuguese .................................41-59
日本語 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61-78
1.0 SAFETY
1.1 Introduction
Read all instructions carefully. Follow all recommended safety
precautions to avoid personal injury as well as damage to the jack
and/or damage to other property. Enerpac cannot be responsible
for any damage or injury from unsafe use, lack of maintenance
or incorrect operation. Do not remove warning labels, tags, or
decals. In the event any questions or concerns arise, contact
Enerpac or a local Enerpac distributor for clarification.
If you have never been trained on high-pressure hydraulic safety,
consult your distributor or service center for a free Enerpac
Hydraulic Safety Course.
This manual follows a system of safety alert symbols, signal
words and safety messages to warn the user of specific hazards.
Failure to comply with these warnings could result in death or
serious personal injury, as well as damage to the equipment or
other property.
The Safety Alert Symbol appears throughout this
manual. It is used to alert you to potential physical
injury hazards. Pay close attention to Safety Alert
Symbols and obey all safety messages that follow this symbol to
avoid the possibility of death or serious personal injury.
Safety Alert Symbols are used in conjunction with certain Signal
Words that call attention to safety messages or property damage
messages and designate a degree or level of hazard seriousness.
The Signal Words used in this manual are DANGER, WARNING,
CAUTION and NOTICE.
DANGER
Indicates a hazardous situation that, if not avoided,
will result in death or serious personal injury.
WARNING Indicates a hazardous situation that, if not
avoided, could result in death or serious
personal injury.
CAUTION Indicates a hazardous situation that, if not
avoided, could result in minor or moderate
personal injury.
NOTICE
Indicates information considered important,
but not hazard related (e.g. messages relating
to property damage). Please note that the
Safety Alert Symbol will not be used with this
signal word.
1.2 Use Guidelines Supplement
A copy of the Pow’R Lock Use Guidelines Supplement (Enerpac
document L4131) has been packed separately with the jack. Read
and fully understand the instructions and precautions contained
in the Use Guidelines Supplement before operating the jack.
1.3 Safety Precautions - Pow’R-LOCK
™Portable Lift
System
WARNING
Failure to observe and comply with the following precautions
could result in death or serious personal injury. Property
damage could also occur.
• Keep hands and feet away from hydraulic cylinder and
related components during jack operation.
• Always wear proper personal protective equipment (PPE)
when operating hydraulic equipment (such as gloves, eye
protection, head protection, protective footware, etc.).
• Do not handle pressurized lines. Escaping oil under
pressure can penetrate the skin, causing serious personal
injury. If oil is injected under the skin, see a doctor
immediately.
• The jack is to be used only for lifting loads and for
supporting lifted loads. Never use the jack for pushing
or separating objects, or for other non-lifting related
purposes.
• Never exceed the rated capacity of the jack. Allow for a
margin of safety that accounts for possible shifting loads
or side loading conditions. Failure to follow this warning
could cause the jack to fail.
• Never tamper with overload protection devices. The jack's
internal relief valve must not be repaired or adjusted
except by an authorized service center. The maximum
rated hydraulic pressure of the jack hydraulic system is
10000 psi [700 bar]. Higher settings may result in personal
injury and/or equipment damage.
• Be sure lifting arrangement is stable before lifting load.
Use jack only on a solid and level surface, capable of
supporting the load and the base of the jack. Always
center the load on the load cap of the jack. If the jack is
not perpendicular to the load, slipping or loss of load is
possible.
• Distribute the load evenly when performing lifts with
multiple jacks. Failure to heed this warning may cause loss
of load and/or failure of the jacks.
• Be aware of external events and acts of nature (wind,
storms, flooding, earthquakes or other seismic activity,
etc.) that could occur either while the jack is in active use,
or while it is left loaded and unattended. Do not use the
jack if it is likely that such conditions will occur.
NOTICE:
or

2
2.0 PRODUCT DATA
Table 1 - General Specifications (notes and precautions)
Load Rating
(Maximum Capacity)
Model US Tons kN
WARNING Do not exceed
jack load rating. Death, serious
personal injury and/or property
damage could result.
PL20014-ASA 200 1779
PL20025-ASA 200 1779
Weight
Model Pounds kg Weight includes reservoir filled with
oil but does not include accessories,
such as cylinder adapter, extensions
or spacers.
PL20014-ASA 1105 501
PL20025-ASA 1320 599
Collapsed Height (fully retracted)
Model inches mm
Refer to tables 2 and 3,
item E1.
PL20014-ASA 34.0 864
PL20025-ASA 45.5 1156
Maximum Stroke (fully extended)
Model inches mm
Refer to tables 2 and 3,
item E2.
PL20014-ASA 14.0 356
PL20025-ASA 24.5 622
Hydraulic Pressure
Model
Max. Working Pressure at Load Rating
WARNING The maximum
pressure of the jack hydraulic
system is factory set at 10000 psi
[700 bar]. Do not attempt to
readjust pressure relief valve.
Death, serious personal injury and/
or property damage could result.
psi bar
PL20014-ASA 9898 682
PL20025-ASA 9898 682
Cylinder Advance Speed
Approximately 2.0 to 2.4 inches [51 - 61 mm] per minute.
NOTICE: Actual advance speed will vary depending on available air flow, pressure regulator setting,
pump speed, load weight, diameter of incoming air supply line and other variables.
Compressed Air
Requirements
Dynamic Air Pressure Air Flow Volume
Typical 90 - 100 psi [6,2 - 6,9 bar]
130 - 150 CFM [3681 - 4247 l/min]Minimum 50 - 60 psi [3,4 - 4,1 bar]
Maximum 120 psi [8,3 bar]
NOTICE: Specifications are subject to change without notice.
CAUTION
Failure to observe and comply with the following precautions
could result in minor or moderate personal injury. Property
damage could also occur.
• When jack is not in use, fully retract the cylinder and protect
the entire unit from external damage. Keep the jack clean,
avoid weld splatter, and store in a clean dry area. Failure
to observe these precautions may cause erratic operation,
reduced performance, increased wear and/or damage to
jack.
• Keep the jack away from flames and heat. For optimum
performance, do not expose the jack to temperatures
above 150 °F [65 °C]. Failure to observe these precautions
may cause erratic operation, reduced performance,
increased wear and/or damage to jack.
• Immediately replace worn or damaged parts with genuine
Enerpac parts. Enerpac parts are designed to fit properly
and to withstand high loads. Non-Enerpac parts may break
or cause the jack to malfunction.
NOTICE
• The jack is not designed for long-term support of lifted objects.
If the load must remain supported for more than 30 days, use
appropriately rated load support devices to support the load.
• Hydraulic equipment must only be serviced by a qualified
hydraulic technician. For repair service, contact the Enerpac
Authorized Service Center in your area.
1.4 Crush and Pinch Point Hazard
WARNING CRUSH AND PINCH POINT HAZARD! Never
reach in between the cylinder anti-rotation plate and the jack
front access cover. Do not touch or grab the anti-rotation
rods. Do not place hands in or on the cylinder protective
bellows. Serious personal injury can occur if cylinder is
lowered and hands, fingers or other body parts are present in
these areas. See Figure 1.
WARNING: CRUSH AND
PINCH POINT HAZARD
•Never place fingers or hands in vise!
•Do not use fingers or hands to
position objects in vise!
Figure 1, Pinch Point Hazard
Crush and Pinch Point Hazard.
Do not reach in this area!

3
A2
C
A1
E2
E1
D
H
B
G
F
B
E2
C
H
E2
E1
G
F
D
A2
A1
Table 2 - External Dimensions, PL20014-ASA
A1 A2 B C D E1 E2 F G H
inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm
38.6 980 64.0 1626 15.7 399 25.4 645 89.9 2283 34.0 864 48.0 1219 14.5 368 5.0 127 23.6 599
A2
C
A1
E2
E1
D
H
B
G
F
B
E2
C
H
E2
E1
G
F
D
A2
A1
Table 3 - External Dimensions, PL20025-ASA
A1 A2 B C D E1 E2 F G H
inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm
38.6 980 64.0 1626 15.7 399 25.4 645 89.9 2283 45.5 1156 70.0 1778 14.5 368 5.0 127 23.6 599
NOTICE: Height of items E1 and E2 is with swivel load cap installed. Subtract 2 inches (51 mm) if non-swivel load cap is used.
Dimensions shown are approximate and subject to change without notice.

4
3.0 PRODUCT DESCRIPTION
The Pow’R-LOCK™ lifting jack provides continuous positive
locking of the load through all stages of lifting and lowering. No
operator intervention is required to activate or de-activate the
automatic locking system.
Two dierent stroke lengths are available. Both models are
powered by an external compressed air system (user-supplied).
A convenient two-button pendant controls operation of the jack's
air motor and directional control valve.
Refer to Section 2.0 for specifications, dimensions and other
product data. See Figure 2 for a list of major features and
components.
4.0 CONFORMANCE TO NATIONAL AND
INTERNATIONAL STANDARDS
Enerpac declares that this product has been tested and
conforms to applicable standards and is approved to
carry the CE mark. An EU Declaration of Conformity is
enclosed separately.
05
08
09
08
07
10
09
06
15
16
18
14
20
01 01
19
03
02
12B
12A
04
13
17
24
22
23
21
11
Figure 2, Major Features and Components, PL200 Series Models (PL20014-ASA shown, PL20025-ASA similar)
Key:
01. Lifting Eye
02. Anti-Rotation Tubes
03. Protective Bellows
04. Jack Base
05. Handle Lock Lever
06. Positioning Handle
07. Drain Plug
08. Rear Cover Supports
09. Detent Pin
10. Hydraulic Reservoir
11. Wheel and Hub
12A. Upper Handle (raised)
12B. Upper Handle (lowered)
13. Hose Storage Hooks
14. Pendant Hose
15. Pendant Control
16. Caster Wheels
17. Lower Handle
18. Rear Access Cover
19. Rubber Latch
20. Tire
21. Hydraulic Cylinder
22. Front Access Cover
23. Anti-Rotation Plate
24. Load Cap
See Fig. 3

5
5.0 ASSEMBLY AND SETUP
5.1 Important Receiving Instructions
Visually inspect all components for shipping damage. Shipping
damage is not covered by warranty. If shipping damage is found,
notify carrier at once. The carrier is responsible for all repair and
replacement costs resulting from damage in shipment.
NOTICE
The jack rear access cover must be removed to gain
access to various components and service items discussed in
sections 5.2 through 5.4. Refer to Section 7.1 for cover removal
instructions.
5.2 Hydraulic Oil Level
Before using the jack or connecting the air supply, remove the
oil fill plug from the hydraulic reservoir and check the oil level.
Add additional hydraulic oil to reservoir if oil level is low. See
Section 7.3 for oil level diagram, oil specifications and additional
instructions.
5.3 Compressed Air Requirements
The compressed air system used with the jack must be capable
of providing 80 - 100 psi [5,5 - 6,9 bar] @ 130 CFM [3681 l/min].
The jack is equipped with an air filter/regulator assembly, which
consists of an air regulator, pressure gauge and moisture trap.
See Figure 3, items B, I and J.
A short hose connects the filter/regulator to the air-shutovalve.
The air inlet connection is a 1/2 inch NPT female thread. See
Figure 3, items K, L and M. Refer to Figure 4 for shut-ovalve
positions.
For eciency of output and reliable operation, an air supply
line of not less than 0.82 inch [20,8 mm] internal diameter is
recommended. (Nominal Pipe Size - 3/4 inch pipe).
Check the air pressure gauge with the pendant UP button
depressed and the jack air motor running. Be sure there is NO
load on the cylinder. This will provide an accurate dynamic air
pressure reading.
The minimum dynamic air pressure required to operate the jack
will vary, but is typically about 50 to 60 psi [3,4 - 4,1 bar].
Approximately 90 to 100 psi [6,2 to 6,9 bar] dynamic air pressure
will be needed for the jack to achieve its rated 200 ton [1779 kN]
lifting capacity.
Lifting speed and torque can be adjusted using the knob located
at the top of the filter/regulator. To prevent damage to jack
pneumatic components, the regulator air pressure setting should
not exceed 120 psi [8,3 bar].
NOTICE
Pressure settings of above 120 psi [8,3 bar] will result
in reduced air motor life and will void the Enerpac product
warranty.
5.4 Air Lubrication
The jack pneumatic system is equipped with an automatic air
line lubricator. See Figure 3, items A, F, G and H. Lubricated air
is necessary to provide lubrication for the air motor and to help
prevent rust formation.
WARNING Be certain that regulator air pressure gauge
indicates zero (0) psi/bar before removing lubricator fill plug.
Lubricant may spray from fill opening if fill plug is removed
while system is pressurized, even when air hose has been
disconnected and air shut-ovalve is in the closed position.
Serious eye injury and/or skin penetration could result. If any
pressure is indicated, relieve pressure as described in
Section 7.2 of this manual.
Before using the jack, check the lubricant level in the sight gauge
on the air line lubricator. Add additional lubricant if low. Refer to
Section 7.6 for air lubricant recommendations and additional air
lubricator information.
After the air supply hose has been connected, observe the oil
flow through the oil drip window while the cylinder is in motion.
Verify that the lubricator drip speed is set at 4 to 5 drops per
minute.
NOTICE
Air motor must be running and cylinder must be
moving up or down when checking lubricator oil drip speed.
0
Figure 4, Air Shut-Off Valve Positions
OPEN CLOSED
NOTICE: NOTICE
CAUTION WARNING DANGER
Be sure air pressure gauge (item J)
indicates zero (0) psi/bar before
removing lubricator fill plug (item F).
Figure 3, Filter/Regulator, Air Line Lubricator
and Air Shut-off Valve
I
M
K
L
B
H
A
J
F
G
Key:
A. Air Line Lubricator
B. Air Filter/Regulator
(with moisture trap)
F. Lubricator Fill Plug
G Oil Drip Window
H. Oil Drip Speed Control
(inside oil drip housing)
I. Air Regulator Knob
J. Air Pressure Gauge
K. Air Inlet Hose
L. Air Inlet Connection
(1/2 inch NPT)
M. Air-shutoValve
Note: See Fig. 13
for items C, D and E.

6
5.5 Upper Handle Installation
The upper handle is shipped unassembled. Install it as described
in the following steps. See Figure 5 for assembly details.
1. Align end of upper handle with opening in lower handle.
Slide upper handle into lower handle until it stops.
2. Secure upper handle with two 3/8-16 inch screws (shipped
loose). Tighten screws to approximately 150 in-lbs [16,9
Nm].
3. Wrap the pendant hose loosely around the hose storage
hooks and hang the pendant control on the upper handle.
Upper Handle
Screws
(shipped loose)
Figure 5, Upper Handle Installation
Lower
Handle
5.6 Using the Handle Assembly
The handle assembly is used for transporting the jack on its
wheels and also serves as an aid for positioning the jack under
the jacking point. See Figure 6 for adjustment details.
5.6.1 UPPER HANDLE ADJUSTMENT
1. Push the handle lock lever to release the lock pin.
2. With the lock pin released, position the upper handle to
the desired location. Then, release the handle lock lever to
engage the lock pin.
5.6.2 DETENT PINS - LOWER HANDLE
The detent pins on the lower handle should be engaged in the
corresponding holes on the hydraulic reservoir before tilting the
jack back on its wheels.
To engage the detent pins:
1. Be sure that the detent pins are pulled-out on both sides of
the lower handle.
2. Push down firmly on the upper handle. The jack will tilt
forward slightly. Align the detent pins with the detent pin
holes (located on each side of the hydraulic reservoir).
3. While continuing to push down on the upper handle, push
both detent pins inward until they are fully engaged in the
detent pin holes.
4. After engaging the lock pin and both detent pins, the jack
can now be tilted back onto the wheels and pushed or pulled
to the work area.
CAUTION Do not walk backwards while pulling the jack.
Always look toward the direction where the jack is being
pulled. Failure to observe this precaution may cause you to
trip and fall, resulting in possible personal injury.
Figure 6, Handle Adjustments
(pendant and hose not shown)
Detent Pin
(one on each side
of lower handle)
Handle
Lock Lever
Lower Handle
Upper Handle
Lock Pin
To disengage the detent pins:
1. Push down firmly on the upper handle to remove weight
from the detent pins.
2. Pull out the detent pins on both sides of the lower handle.
3. Slowly release hand pressure on the upper handle until the
jack base is resting on the floor or ground.
5.6.3 ADDITIONAL INFORMATION AND PRECAUTIONS
NOTICE
• The hubs and wheels can be released by disengaging the
detent pins. Disengaging these pins before using the jack will
help prevent damage which may occur as a result of unstable
jack support conditions.
• Be certain that both detent pins are disengaged (pulled out)
before using the jack to lift, support or lower a load. Failure to
observe this precaution may result in damage to the jack lower
handle, wheels, or axles.
• To closely position the jack under the load, be certain that
the upper handle is in the lowest and most horizontal locking
position. Verify that both detent pins are disengaged. Then,
push down firmly on the upper handle.
WARNING Be certain that the upper handle is in the
lowest, most horizontal locking position before positioning
the jack under the load with the detent pins disengaged. If
the upper handle is in any of the five locking positions above
the lowest one, pushing the upper handle downward can
unexpectedly cause the weight of the jack to tip forward of
the front edge of the jack base. Uncontrolled tipping of the
jack may occur, and serious personal injury could result.

7
5.7 Caster Wheels
Figure 7, Caster Wheels
Caster wheels are mounted at the
top end of the upper handle. They
allow the jack to be tilted back and
pushed or pulled to the desired
work location. The caster wheels
can also be used to help maneuver
the jack when it is being positioned
under the jacking point.
For best results, the upper handle
should be adjusted to the most
upright (vertical) position before
using the caster wheels.
5.8 Lifting and Supporting the Jack
Two lifting eyebolts are located on the cylinder housing. Use only
these eyebolts when it is necessary to lift or support the jack
for any reason. Always use a suitable lifting device of adequate
capacity. Refer to Section 2.0 for jack weights.
WARNING Never use the handle assembly to lift or
support the jack. The handle assembly is not designed for
this purpose. Jack will drop if failure of handle assembly
occurs. Death, serious personal injury and/or property
damage may result.
Figure 8, Lifting Eyebolts
Lifting
Eyebolt
Lifting
Eyebolt
6.0 OPERATION
6.1 Jacking Safely
You must know the weight of what you intend to lift and choose
a jack with at least 20 percent additional capacity.
Before operating the jack, refer to the Pow’R Lock Use Guidelines
Supplement (Enerpac document L4131) for important lifting
information and precautions.
All persons operating the jack should obtain and be familiar with
the American National Standards Institute rules that apply to
hydraulic rams and jacks (ASME ANSI B30.1) or the equivalent
standards used in your country or region.
WARNING
Failure to observe and comply with the following precautions
could result in death or serious personal injury:
• Never place any part of your body under the load at any
time while lifting or lowering is in progress. The load could
drop suddenly if it becomes unstable.
• Never leave the jack unattended during operation, even
for a brief period of time. Closely monitor jack operation
at all times and be prepared to stop lifting or lowering
immediately. Load could drop if it is not monitored while
jack is in use.
• Avoid placing external forces on the lifted load while it
is being supported by the jack. The load may become
unstable and fall.
• Do not use the jack outdoors in windy conditions.
Changes in wind direction or velocity could cause the load
to become unstable and fall.
• When lifting with more than one jack, be especially careful
to keep the load level. Leveling is best accomplished by
throttling with the air shut-ovalve or by alternating and
stopping jacks to keep the load level enough so it remains
stable and does not drop.
• Never operate the jack with the jack front access cover
raised or removed. Serious personal injury could result
if fingers, hands or other body parts become entangled
in the lock nut drive chain mechanism, or in the cylinder
threads.
6.2 Calculating Load Floor Pressure Requirements
Before the jack is used, it must be verified that the surface
below the jack is capable of supporting the load. The following
calculation will determine the approximate maximum pressure
that will be exerted by the jack against the surface of the floor or
ground, based on the load being lifted.
WARNING If any doubt exists regarding whether the
floor and/or ground can safely support the load to be lifted,
the jack should not be used in that location. Avoid using jack
on overburden or ballast that can shift or crush under load.
Consult a qualified professional, such as a licensed civil
engineer or building architect If there are any questions
or concerns regarding load floor pressure requirements.
Failure to observe this instruction may cause an unstable
lifting arrangement, resulting in loss of load, personal injury
and/or property damage.
6.2.1 LOAD FLOOR PRESSURE CALCULATION:
Weight of Load x Load Factor = Load Floor
Pressure Requirement
• The load factor to be used for the imperial system is 0.0125.
• The load factor to be used for the metric system is 0.00194.
These load factors are applicable to all Pow’R-LOCK™ jack
models.
EXAMPLE:
For a 100000 pound [45359 kg] load, the following equations
would apply:
Imperial System: 100000 x 0.0125 = 1250 psi
Metric System: 45359 x 0.00194 = 87.99 kg/cm 2
NOTICE
The jack is designed to withstand only a limited amount
of side loading. Excessive side loading will reduce the jack's
eective foot print on the load floor and will increase the jack
contact pressure. Damage to jack components may occur.

8
6.3 Pendant Controls
The air motor will start automatically when either pendant button
is depressed. See Figure 9.
• To extend (raise) the cylinder -
press and hold the pendant UP button.
• To retract (lower) the cylinder -
press and hold the pendant DOWN button.
• To stop the cylinder and hold the load -
release both pendant buttons.
NOTICE
When depressing or releasing either pendant button,
there may be a brief delay until the desired action occurs. A small
amount of time (up to one second) is required for the jack's
pneumatic control circuit to respond to pendant commands.
DOWN
BUTTON
UP
BUTTON
Figure 9, Pendant Controls
6.4 Checking Jack Operation Before Use
Before using the jack for the first time, or if the jack has been
in storage for more than 30 days, check the jack operation as
described in the following steps:
1. If not already done, check the oil level in the hydraulic
reservoir. Refer to Section 7.3 for additional information.
2. Verify that the jack is connected to the compressed
air supply, and that the air pressure setting is correct.
Refer to section 5.3 for air pressure requirements and
recommendations.
3. Be sure that the jack air shut-ovalve is in the OPEN position.
NOTICE
Perform the following step with no load on jack. Refer
to Section 6.3 for pendant control information.
4. Fully extend and retract the cylinder to verify proper
operation. If needed, continue cycling the cylinder until
operation is smooth, and any trapped air has been removed
from the system.
NOTICE
The jack will make a “hissing”sound when the air
supply is connected and the air-shutovalve is in the OPEN
position. This sound is normal, and indicates that the jack
pneumatic system is pressurized.
6.5 Operating Instructions
WARNING
Failure to observe and comply with the following precautions
could result in death or serious personal injury. Load may
become unstable or drop. Property damage could also occur.
• Before operating the jack, refer to the Pow’R Lock Use
Guidelines Supplement (Enerpac document L4131) for
important lifting information and precautions.
• Always lift, support and lower the load in accordance with
all applicable work rules and regulations in eect at your
worksite or facility.
• Wait an appropriate amount of time before working under
the load. Any settling of jack base or load supports (if used)
into the ground below must not exceed 1/4 inch [6,4 mm].
If additional settling occurs, lower the load and reposition
jack on solid ground.
6.5.1 BEFORE BEGINNING THE LIFT:
1. Using the handle assembly, adjust the jack position so that
the cylinder load cap is centered under the jacking point of
the load. Be sure that the jack base is positioned on a solid
and level support surface, with the cylinder perpendicular to
the floor or ground.
WARNING Close positioning of the jack under the load
with the detent pins disengaged should only be done when
the upper handle is positioned in the lowest, most horizontal
locking position. Uncontrolled tipping of the jack may occur
if this precaution is not observed and serious personal injury
could result. Refer to additional instructions and precautions
in sections 5.6.1, 5.6.2 and 5.6.3 of this document.
2. After positioning the jack, be sure that both detent pins on
the lower jack handle are fully pulled out (disengaged).
NOTICE
Be certain that both detent pins are disengaged before
using jack to lift, support or lower a load. Failure to observe this
precaution may result in damage to the lower handle, wheels, or
axles.
3. If a high jacking point requires a taller jack, install extensions
and/or spacers (optional accessories) on the cylinder as
required. Refer to Section 6.6 for installation instructions and
additional information about extensions and spacers.
4. Place a piece of good quality plywood or other compression
material (approximately 1/4 inch [6,4 mm] thick with high
friction characteristics) between the cylinder load cap
and the jacking point. This will provide a small amount of
cushioning and will also help prevent damage to the jacking
point.
WARNING Jacking at an angle can allow the jack to slip
out of position, resulting in possible loss of load, personal
injury and/or damage to jack. As required, use a swivel load
cap to properly engage an angled lifting point. The slope of
the angled lifting point must not exceed 5 degrees.
6.5.2 TO RAISE THE LOAD:
1. Depress and hold the pendant UP button. The air motor will
start and the cylinder will begin extending.
2. When the load has reached the desired height, release the
pendant UP button. The cylinder will stop and the load will
remain supported.
NOTICE
Although the Pow’R-LOCK™ jack is designed to be a
load holding device, the use of auxiliary stands, blocking or other
additional load supports may be required in your location. Follow
all applicable work rules and regulations in eect at your facility
or worksite.

9
PLB12 PLE5 PLE7 PLE9 PLE11 PLE14
PLS1 PLS2
DD4880045SR PLC1
Table 4 - PLB and PLE Series Extensions (optional accessories)
Extension
Model
Height (each) Weight (each) Extension
Model
Height (each) Weight (each)
inches mm pounds kg inches mm pounds kg
PLB12 12 305 44.2 20,0 PLE9 9 229 28.0 12,7
PLE5 5 127 24.6 11,2 PLE11 11 279 31.7 14,4
PLE7 7 178 29.9 13,6 PLE14 14 356 37.4 17,0
WARNING Extensions PLE11, PLB12 or PLE14 are to be used with the “short” jack model PL20014-ASA only. Use of
these extensions on “tall” jack model PL20025-ASA will result in an excessive maximum lifting height. Load could become
unstable and drop, resulting in possible personal injury and/or property damage.
NOTICE: Dimensions and weights shown are approximate.
6.5.3 TO LOWER THE LOAD:
WARNING Be careful while lowering to ensure that the
load is lowered evenly, so that load shifting does not occur.
Load shifting could cause instability, which could result in
loss of load and/or failure of the jack. This could cause death,
serious personal injury and/or property damage.
1. Be certain that no persons are working under the load. Alert
all personnel that the load is about to be lowered.
2. Depress and hold the pendant DOWN button. The air motor
will start and the cylinder will advance a slight amount to
raise and release the cylinder lock nut. The cylinder will then
begin to retract.
3. When the load has been lowered to the desired height,
release the pendant DOWN button. The air motor will stop.
6.5.4 AFTER COMPLETING THE JOB:
1. Fully retract the cylinder. Disconnect the air supply hose from
the jack air-shutovalve.
2. To remove trapped pressure from the jack pneumatic system,
depress and hold the pendant UP button. The air motor may
run for a few seconds but will stop when pressure is relieved.
3. Always store the jack and its accessories in a clean and dry
area, free of moisture and direct sunlight.
NOTICE
Always keep a load cap or extension installed in the
top of the cylinder when jack is not in use. This will prevent water
from accumulating inside the recessed area at the top of the
cylinder.
6.6 Stacking Instructions - Extensions and Spacers
Extensions and spacers are available as optional accessories
from your Enerpac authorized distributor. Refer to tables 4 and
5 for additional information.
PLE Series extensions allow the jack's usable lifting height to be
increased up to 9 inches [229 mm] for model PL20025-ASA and
up to 28 inches [711 mm] for model PL20014-ASA.
PLS Series spacers allow additional fine adjustment of the usable
lifting height. They may be used alone or in conjunction with
PLE Series extensions. Spacers of 1 and 2 inch [25 and 51 mm]
heights are available.
WARNING
Failure to observe the following precautions and instructions
may allow the load to shift or drop, resulting in possible
personal injury and/or property damage.
• Before installing any extensions or spacers, refer to
the Pow’R Lock Use Guidelines Supplement (Enerpac
document L4131) for important lifting information and
precautions.
• Use only genuine Enerpac PLB, PLE and PLS Series
extensions and spacers with the Pow’R-LOCK™ jack.
Never use extensions or spacers that are fabricated or that
are designed for use with another lifting device.
• Never exceed the maximum additional stack height for your
jack model. Refer to Table 6 for additional information. An
excessive stack height will reduce the stability of the jack.
▲▲
▲
▲Use with jack model PL20014-ASA only.
▼Use with jack model PL20014-ASA or PL20025-ASA.
▼ ▼ ▼

10
PLB12 PLE5 PLE7 PLE9 PLE11 PLE14
PLS1 PLS2
DD4880045SR PLC1
Table 5 - PLS Series Spacers (optional accessories)
Spacer Model Height (each) Weight (each)
inches mm pounds kg
PLS1 1.0 25 4.5 2,0
PLS2 2.0 51 9.1 4,1
NOTICE: Dimensions and weights shown are approximate.
WARNING Failure to observe the following rules,
precautions, and conditions could result in an unstable
lifting arrangement. Load could shift or drop, resulting in
possible personal injury and/or property damage.
When using PLB, PLE or PLS Series extensions and spacers,
always obey the following rules, precautions, and conditions:
• Table 6 shows the maximum additional stack height (dimension
“X”) that is allowed. When installing extensions and spacers,
do not exceed this dimension for your jack model.
• The total height of the PLS Series spacers installed in the stack
must not exceed 2 inches [51 mm].
• Jack model PL20014-ASA: Only one PLB12 base extension
(if used) must be present in the stack, and the PLB12 must
always be located at the bottom of the stacking arrangement.
Do not attempt to stack two or more PLB12's together.
• Extensions PLE11, PLB12 and PLE14 are designed for use
with model PL20014-ASA only. To prevent unsafe operation,
do not use these extensions on jack model PL20025-ASA (see
warning statement at bottom of Table 4).
• Be especially careful to avoid o-center loads and side loads
when using extensions and spacers.
Table 6 - Maximum Additional Stack Height
(Using optional PLB and PLE Series
extensions and PLS Series spacers)
Jack Model
Maximum
Additional
Stack Height
(dimension “X”)
X
inches mm
PL20014-ASA 28.0 711
PL20025-ASA 9.0 229
Stack height (dimension “X”) includes total combined height of all
installed extensions and spacers. Load cap height is NOT included in
the stack height.
6.7 Load Caps
A swivel load cap is included with the jack as standard equipment.
A non-swivel load cap is available as an optional accessory, and
is for use in applications where a reduced collapsed height is
needed. Refer to Table 7 for load cap model numbers.
NOTICE
Use a swivel load cap to properly engage angled lifting
points. A swivel load cap should always be used when the
amount of misalignment between a non-swivel load cap and the
lifting point is too large to be compensated for by use of plywood
or other suitable high-friction compression material alone.
For additional information regarding load cap selection and
usage, refer to the Pow’R Lock Use Guidelines Supplement
(Enerpac document L4131).
PLB12 PLE5 PLE7 PLE9 PLE11 PLE14
PLS1 PLS2
DD4880045SR PLC1
Table 7 - Load Caps
Load Cap Model Height (each) Weight (each)
inches mm pounds kg
DD4880045SR
Swivel Load Cap
(standard)
3.3 84 20.2 9,2
PLC1
Non-swivel Load Cap
(optional accessory)
1.3 33 10.4 4,7
NOTICE: Dimensions and weights shown are approximate.

11
7.0 MAINTENANCE
7.1 Rear Access Cover Removal
The jack rear access cover must be removed to gain access to
various inspection, lubrication and maintenance points. Remove
the jack rear access cover as described in the following steps:
1. Unhook the rubber latches on each side of the cover. See
Figure 10.
2. Pull up on the cover until the round openings on the cover
keyways align with the cover support pins on the rear of the
hydraulic reservoir.
Figure 10, Rear Access Cover Removal
3. Gently guide the cover rearward until it has cleared the pins
and then lift the cover oof the jack.
4. Reverse steps 1, 2 and 3 to reinstall the cover. At the keyway
openings, be sure the groove in each cover support pin is
aligned with the cover sheet metal before fully installing the
cover onto the jack.
WARNING
Always reinstall the jack rear access cover
before using the jack. Except as necessary for maintenance
procedures, do not operate jack with cover removed. Serious
personal injury could occur if persons make contact with hot
surfaces or pressurized lines and components while cover is
removed. Damage could also occur if falling objects drop
onto exposed components.
7.2 Depressurizing the Jack Hydraulic and Pneumatic
Systems
For some maintenance procedures contained in Section 7 of
this manual, it is required that the jack hydraulic and pneumatic
systems be depressurized before the procedure can begin. These
operations are necessary to ensure the safety of the maintenance
personnel.
WARNING Failure to follow the procedure in the following
steps may result in unexpected start-up of jack while
maintenance and repair procedures are being performed.
Uncontrolled release of pressure may also occur if
pressurized components are opened or pressurized fittings
are loosened. Serious personal injury could result.
NOTICE
The hydraulic system must be depressurized first,
before the pneumatic system is depressurized. Always be sure to
depressurize both systems.
1. Depressurize the jack hydraulic system, as described in
steps 1a through 1c:
a. Check that the jack is connected to the air supply and the
air-shutovalve is in the OPEN position.
b. Be sure the cylinder is in the fully retracted position.
c. Depress the pendant UP button while watching the
cylinder. Release the UP button IMMEDIATELY when the
cylinder starts advancing (usually after about 1 or 2 seconds).
This procedure will relieve any trapped pressure in the jack
hydraulic system.
NOTICE
To prevent hydraulic pressure from re-building in the
system, do not depress the pendant DOWN button at any time
during the following steps.
2. Depressurize the jack pneumatic system, as described in
steps 2a through 2f:
a. Move the jack air-shutovalve to the CLOSED position.
b. Disconnect air supply hose at jack air-shutovalve.
NOTICE
Jack may start and run briefly in the following step, as
trapped air is expelled from the jack pneumatic system.
c. Depress and hold the pendant UP button. Continue
holding button until jack air motor stops running. Motor will
usually stop after about 2 to 6 seconds, depending on length
of air supply hose.
d. Verify that there is no audible “air hiss”sound coming
from the jack.
e. Remove the jack rear access cover (if not already
removed). Refer to Section 7.1.
f. Check the air pressure gauge on the jack filter/lubricator.
Verify that it indicates zero (0) psi/bar.
NOTICE
If any pressure is indicated on gauge, be certain that
air-shutovalve is in the CLOSED position and that air hose is
disconnected from air shut-ovalve. Then, repeat steps 2c
through 2f.
3. Proceed with desired maintenance or repair procedure.
7.3 Checking Oil Level
Check the hydraulic oil level every 90 days.
1. Be sure that cylinder is fully retracted and that the jack is
positioned on a firm and level surface.
2. Remove the jack rear access cover. Refer to Section 7.1.
3. Be sure the air shut-ovalve is in the CLOSED position.
4. Unscrew and remove the oil fill plug. See Figure 11.
5. Check the oil level in the reservoir. Oil level should be
approximately 1 inch [25 mm] below top of reservoir, with
cylinder fully retracted and air motor turned o. See Figure 11.
6. If oil level is low, add Enerpac HF hydraulic oil as required.
Use a funnel to avoid spillage.
NOTICE
• Reservoir is vented. To prevent oil leakage through the air
breather, do not fill reservoir completely to the top.
• To help avoid accidental overfilling of reservoir, always make
sure that cylinder is fully retracted before checking oil level or
adding additional oil.
• If Enerpac HF is not available at the worksite, use an equivalent
hydraulic oil that meets the specifications shown in Table 8.
7. Reinstall oil fill plug.
8. Reinstall the jack rear access cover. Refer to Section 7.1.

12
Table 8 - Hydraulic Oil Specifications - ISO 32
ISO Grade 32
Viscosity Index 100 min
Viscosity at 210 °F42-45 S.U.S.
Viscosity at 100 °F150-165 S.U.S.
Viscosity at 0 °F<12000 S.U.S.
API Gravity 31.0-33.0
Flash, C.O.C. °F400
Pour Point, °F-35
Figure 11, Oil Level - Hydraulic Reservoir
(handle assembly removed to show detail)
FULL = 1 inch [25 mm]
below top of reservoir
Oil Fill Plug
Oil Level
(FULL)
NOTICE
• Failure to use the proper oil may result in damage to jack
hydraulic components and will void the product warranty. Use
of Enerpac HF oil is strongly recommended.
• Be sure that the oil is clean. The oil cleanliness should be
maintained to a maximum level of 19/16/13 per the ISO4406
standard. If the oil has a milky, cloudy or dark appearance, it
should be changed immediately as described in Section 7.4.
7.4 Changing the Oil
Change the oil in the hydraulic reservoir every 12 months or 500
hours of use. See Figure 12.
The following conditions will require more frequent oil changes:
• Rigorous duty, where oil temperature may reach 150 °F
[60 °C].
• A high humidity environment and/or extreme changes in
temperature that can result in condensation inside the reservoir.
• Dirty or dusty environments that may contaminate the oil.
Change the oil as described in the following steps:
1. Be sure that cylinder is fully retracted.
2. Remove the jack rear access cover. Refer to Section 7.1.
3. Completely relieve any trapped pressure in the jack hydraulic
and pneumatic systems. Disconnect the air supply hose
from the air shut-ovalve. Follow procedure in Section 7.2.
NOTICE
The hydraulic reservoir holds approximately 5 gallons
[18,9 liter] of oil when filled to the proper level with cylinder fully
retracted and air motor o. Dispose of used oil in accordance
with all applicable laws and regulations.
4. Loosen and remove oil drain plug at bottom of reservoir.
Allow used oil to drain into a suitable container. It may be
necessary to tip the jack back slightly to completely drain all
oil and any debris from the bottom of the reservoir.
5. Clean and reinstall oil drain plug.
6. Remove, clean and reinstall the reservoir air breather.
Replace the air breather if clogged or damaged.
7. Using a strap wrench, unscrew and remove the old oil filter.
Catch any spilled oil in a suitable container. Dispose of spilled
oil in accordance with all applicable laws and regulations.
NOTICE
Use only a new 10 micron oil filter of the proper
specifications (Enerpac Part No. 69670E or equivalent).
8. Before installation, lubricate the new oil filter's rubber seal
with a small amount of oil. Tighten filter hand tight only (do
not use tools).
Key:
2
1
3
1. Air Breather
2. Oil Fill Plug
3. Oil Drain Plug
4. Oil Filter
Figure 12, Oil Change
(handle assembly removed to show detail)
4
9. Remove the oil fill plug and add Enerpac HF hydraulic oil as
required. Use a funnel to avoid spillage. Oil level should be
approximately 1 inch [25 mm] below top of reservoir, with
cylinder fully retracted and air motor turned o. See Figure
11 for oil level diagram.
NOTICE
• Reservoir is vented. To prevent oil leakage through the air
breather, do not fill reservoir completely to the top.
• To help avoid accidental overfilling of reservoir, always make
sure that cylinder is fully retracted before checking oil level or
adding additional oil.
• If Enerpac HF is not available at the worksite, use an equivalent
hydraulic oil that meets the specifications shown in Table 8.

13
10. Clean the oil fill plug and apply thread sealant to the threads.
Reinstall oil fill plug.
WARNING In the following step, it will be necessary to
extend and retract the cylinder several times. Stay clear of
the cylinder and related components. Keep hands and fingers
away from pinch and crush points. Serious personal injury
could occur if these precautions are not observed. Refer to
Section 1.4 of this manual for additional hazard information.
11. With no load on the jack, extend and retract the cylinder
several times to check for proper operation, and to remove
any trapped air in the hydraulic system.
12. With the cylinder fully retracted and the pump motor o,
re-check oil level to be sure that it has not dropped. Add
additional oil if required. See Figure 11 for oil level diagram.
13. Reinstall the jack rear access cover. Refer to Section 7.1.
7.5 Air Line Filter/Regulator (See Figure 13)
Every 30 hours of operation:
1. Remove the jack rear access cover. Refer to Section 7.1.
2. Completely relieve any trapped pressure in the jack hydraulic
and pneumatic systems. Disconnect the air supply hose
from the air shut-ovalve. Follow procedure in Section 7.2.
3. Check the filter bowl sight gauge for water. A manual drain is
located at the bottom of the filter/regulator bowl. If water is
present, drain it into a suitable container and dispose of it in
accordance with all applicable laws and regulations. Be sure
the drain is fully closed after draining is completed.
4. Remove filter bowl and inspect the air filter element (inside
filter bowl). Replace filter element if dirty.
NOTICE
Filter/regulator is manufactured by Norgren. Contact
Norgren for detailed maintenance instructions, filter elements
and replacement parts.
7.6 Air Line Lubricator (See Figure 13)
Every 30 hours of operation:
1. Remove the jack rear access cover. Refer to Section 7.1.
2. Check the sight gauge on the air line lubricant bowl. The
lubricant level should be at least 1/2 full.
NOTICE
If lubricant level is low, add additional lubricant as
described in steps 3 through 6. If lubricant level is OK, skip these
steps and go to step 7.
3. Completely relieve any trapped pressure in the jack hydraulic
and pneumatic systems. Disconnect the air supply hose
from the air shut-ovalve. Follow procedure in Section 7.2.
WARNING Be certain that jack pneumatic system is
completely depressurized and regulator air pressure gauge
indicates zero (0) psi/bar before removing lubricator fill plug.
Lubricant may spray from fill opening if fill plug is removed
while system is pressurized, even when air hose has been
disconnected and air shut-ovalve is in the closed position.
Serious eye injury and/or skin penetration could result.
4. Remove the lubricator fill plug. Add additional lubricant as
required, until the level reaches the top of the lubricant bowl
sight gauge. DO NOT OVERFILL!
For ambient temperatures above 32°F [0°C], use a high
quality SAE 10 [ISO 32] air tool lubricant. For ambient
temperatures below 32°F [0°C], use only a glycol-based
anti-freeze air tool lubricant.
NOTICE
Lubricant level must not be higher then top of site
gauge. Do not operate jack with excess lubricant in lubricant
bowl. If lubricant bowl is overfilled, jack air logic circuit may
become flooded with lubricant, preventing normal operation of
jack.
K
Front View
Figure 13, Routine Service and Maintenance Items - Air Filter/Regulator and Air Line Lubricator
Rear View
NOTICE: NOTICE
CAUTION WARNING DANGER
Be sure air pressure gauge
(item J) indicates zero (0) psi/bar
before removing lubricator fill
plug (item F) or performing
maintenance activities.
I
J
E
M
AH
B
L
F
G
A. Air Filter/Regulator
(with moisture trap)
B. Air Line Lubricator
C. Lubricant Bowl Sight Gauge
D. Drain Valves
E. Filter Bowl Sight Gauge
F. Lubricator Fill Plug
G. Oil Drip Window
H. Oil Drip Speed Control
I. Air Regulator Knob
J. Air Pressure Gauge
K. Air Inlet Hose
L. Air Inlet Connection
(1/2 inch NPT)
M. Air-shutoValve
N. Filter Bowl
O. Lubricant Bowl
O
D
C
N
Key:

14
5. Reinstall the lubricator fill plug.
6. Reconnect the air supply hose. Be sure the air shut-ovalve
is in the OPEN position.
7. Check the lubricator drip speed in the drip window:
• Drip speed should be 4 to 5 drops per minute. Always check
the drip speed while the cylinder is advancing or retracting.
• If drip speed is too slow or too fast, readjust the drip speed
as required. Use a flat blade screwdriver to turn the drip
speed adjustment screw.
NOTICE
Air line lubricator is manufactured by Norgren. Contact
Norgren for detailed maintenance instructions, filter elements
and replacement parts.
8. Reinstall the jack rear access cover. Refer to Section 7.1.
7.7 Air Muer (See Figure 14)
Every 30 hours of operation:
1. Remove the jack rear access cover. Refer to Section 7.1.
2. Disconnect the air supply hose from the air shut-ovalve.
Completely relieve any trapped air in the jack pneumatic
system. Follow procedure in Section 7.2.
3. Inspect the air muer. Remove any loose dirt or debris.
4. If old air muer is very dirty or clogged, replace it with a new
air muer. Use only a 25 micron air muer of the original
specifications (Enerpac Part No. DD4791116 or equivalent).
Air Muer
Figure 14, Air Muffler
7.8 Wheels and Tires (See Figures 15 and 16)
Every 30 hours of operation:
• Check the tires for wear or damage. Replace as required.
• Check the tire inflation pressure. Each tire should be inflated
to 90 psi [6,2 bar].
• Inspect the caster wheels for damage. Remove any loose dirt
Check that each caster wheel rotates and pivots freely and
that mounting hardware is properly tightened.
Every 12 months:
• Lubricate the wheel bearing at each wheel hub with a high
quality wheel bearing grease.
• Each caster wheel contains a wheel bearing and a pivot
bearing. At each caster wheel, lubricate both bearings with a
high quality wheel bearing grease.
Wheel Bearing
Grease Fitting
Tire Air Valve
Figure 15, Wheels and Tires
Caster Wheel
Grease Fittings
Figure 16, Caster Wheel Bearings
7.9 Lubrication of Cylinder Threads and Lock Nut
Chain Drive (See Figures 17-20)
The cylinder threads and lock nut drive chain should be lubricated
approximately every 30 hours of operation. Both lubrication
activities can be performed at the same time, as described in the
following steps:
1. Be sure there is no load on the jack.
2. Unhook the rubber latches and remove the jack rear access
cover. See Section 7.1 for procedure.
NOTICE
Before performing lubrication procedures, the cylinder
must be fully extended and the jack pneumatic system must be
depressurized. Follow instructions in steps 3a-3f.
3. Fully extend the cylinder and depressurize the jack pneumatic
system:
a. Depress and hold the pendant UP button to raise the
cylinder. Continue holding the button until the cylinder is
fully extended and the jack air motor stops running. See
Figure 17.
b. Move the jack air-shutovalve to the CLOSED position.
c. Disconnect air supply hose at jack air-shutovalve.

15
NOTICE
Jack may start and run briefly in the following step, as
trapped air is expelled from the jack pneumatic system.
d. Depress and hold the pendant UP or DOWN button.
Continue holding button until jack air motor stops running.
Motor will usually stop after about 2 to 6 seconds, depending
on length of air supply hose.
e. Verify that there is no audible “air hiss”sound coming
from the jack.
f. Check the air pressure gauge on the jack filter/lubricator.
Verify that it indicates zero (0) psi/bar.
NOTICE
If any pressure is indicated on gauge, be certain that
air-shutovalve is in the CLOSED position and that air hose is
disconnected from air shut-ovalve. Then, repeat steps 3d
through 3f.
Figure 17, Fully Extending the Cylinder
WARNING Becertain thatair supply hoseis disconnected
and that air regulator pressure gauge indicates zero (0) psi/
bar before continuing with this procedure. Jack will start
immediately if air pressure is indicated on gauge, and either
pendant button is depressed. Lock nut and chain will begin
turning. Serious personal injury could occur if jack is started
while persons are performing lubrication procedures.
4. Raise the jack front access cover so that the cylinder threads
are exposed as much as possible. See Figure 18.
Figure 18, Lifting Front Access Cover to Expose Threads
5. Attach a lifting sling to the front access cover. Wrap the sling
around the anti-rotation plate and load cap, so that the cover
is held in the raised position. Be certain that the sling is strong
enough to support the weight of the cover (approximately 15
lbs [5,6 kg]) and that it is securely fastened.
6. Perform the following inspection and lubrication tasks. See
Figure 19.
• Remove any loose dirt or debris from the chain drive
assembly.
• Check each chain tensioner to verify that it is applying
firm spring tension against the chain. If the tensioner does
not move freely, or if spring tension is weak, it should be
replaced. The tensioners are not adjustable or repairable.
• Check the tensioner rollers for obvious indications of wear
or damage. Replace rollers as required. The rollers are
available as a separate replacement part.
• Check all teeth on the lock nut and drive sprockets for
obvious indications of wear or damage. Replace these
parts as required.
NOTICE
Refer to Table 9 for gear oil specifications.
• Apply a film of SAE 80w-90 gear oil [ISO 150] to the links
of the lock nut drive chain.
• At each tensioner, apply a small amount of SAE 80w-90
gear oil [ISO 150] to the exposed areas of the tensioner
pivot bushing, located under the tensioner retaining nut.
Some of the oil will flow past the bushing and onto the
tensioner pivot shaft. Removal of nut is not required.
Table 9 - Gear Oil Specifications - SAE 80w-90 [ISO 150]
(Use for lubricating cylinder threads, lock nut drive
chain, sprockets and tensioner pivot shaft.)
SAE Grade 80w-90
ISO Grade 150
Viscosity Index 103
Viscosity at 40 °C, cSt 136
Viscosity at 100 °cSt 14.5
Flash Point. °C202
Pour Point, °F-30
NOTICE: Specifications shown in this table are typical. Exact
specifications may dier slightly, depending on oil brand.
7. Remove any loose dirt or debris from the cylinder threads
and inspect the threads for obvious wear or damage. If the
old lubricant has dried-up, clean the threads with a brush
and some solvent before applying new lubricant.
8. Using an oil bottle with spout, apply two vertical streams
of SAE 80w-90 gear oil [ISO 150] on the exposed cylinder
threads, from top to bottom of cylinder. See Figure 20.

16
Apply two
streams of
gear oil to threads.
(see Section 7.9 for
detailed instructions)
Figure 20, Cylinder Thread Lubrication
9. Remove the lifting sling and lower the jack front access
cover to its normal position, so it is supported by the chain
drive plate. The front access cover and protective bellows
should now completely cover the cylinder threads and chain
drive mechanism.
WARNING Be certain that jack front access cover is
installed and fully lowered before starting the jack. Never
operate the jack with the front access cover removed or
raised, either during lubrication and maintenance procedures
or when the jack is in use. Failure to observe this precaution
may result in persons becoming entangled in the moving
parts of the chain drive mechanism. Serious personal injury
could result.
10. Reconnect the air supply hose and move the air-shuto
valve to the OPEN position.
WARNING In the following step, it will be necessary to
extend and retract the cylinder several times. Stay clear of
the cylinder and related components. Keep hands and fingers
away from pinch and crush points. Serious personal injury
could occur if these precautions are not observed. Refer to
Section 1.4 of this manual for additional hazard information.
11. With no load on the jack, fully extend and retract the cylinder
several times to distribute the gear oil on the cylinder
threads, and on the chain and drive components. Verify
proper operation.
12. Reinstall the jack rear access cover. Refer to Section 7.1.
Figure 19, Lock Nut Chain Drive Assembly
CD
E1
G
E1
D
I
Key:
A. Hydraulic Cylinder
B. Lock Nut
C. Drive Chain
D. Roller
E1. Chain Tensioner
E2. Tensioner Pivot Shaft
F. Chain Drive Plate
G. Drive Sprocket
H. Proximity Sensors
I. Lock Nut Sprocket
A
H
B
F
E2
E2
✽
✽✽
✽Lubricate with gear oil.
(see Section 7.9 for
detailed instructions)

17
8.0 TROUBLESHOOTING
The information in the Troubleshooting Guide (refer to Table 10) is
intended as an aid to help diagnose and correct various possible
problems that may occur.
For repair service, contact your local Enerpac Authorized Service
Center. Only an Enerpac Authorized Service Center should
service the jack and its components.
WARNING
Failure to observe and comply with the following precautions
could result in death or serious personal injury. Property
damage could also occur.
• Never tighten or loosen hydraulic fittings while jack hydraulic
system is pressurized. Escaping oil under pressure can
penetrate the skin, causing serious personal injury.
• Keep hands, fingers and other body parts clear of pinch
points and moving parts when observing operation during
troubleshooting.
• To prevent injury, always be sure the jack air shut-ovalve
is in the CLOSED position and that the air supply hose is
disconnected before beginning any maintenance, adjustment
or repair procedures. Be certain that any trapped pressure is
completely relieved as described in Section 7.2 of this manual.
Table 10 - Troubleshooting Guide
Symptom Possible Cause Solution
1. Sporadic cylinder
action and/or sluggish
operation.
a. Air trapped in hydraulic system. Cycle cylinder up and down several times to bleed trapped air.
b. Low oil level in hydraulic reservoir. Add Enerpac HF oil as required.
c. Insucient compressed air pressure
or volume.
Check air pressure at filter/regulator. Increase regulator setting if pressure
shown on gauge is too low.
If necessary, increase volume of compressed air or increase size of supply
air line to meet airflow and pressure requirements.
d. Clogged or blocked pump intake
screen.
Have hydraulic reservoir and intake screen flushed and cleaned by
Enerpac Authorized Service Center.
e. Pneumatic control circuit components
leaking, worn, damaged or out of
adjustment.
Have pneumatic control circuit inspected by Enerpac Authorized Service
Center. Repair or replace components as required.
f. Seal wear, internal leakage, worn
components and/or other internal
damage.
Have hydraulic system inspected by Enerpac Authorized Service Center.
Repair or replace components as required.
2. Noisy operation. a. Air trapped in hydraulic system. Cycle cylinder up and down several times to bleed trapped air.
b. Low oil level in hydraulic reservoir. Add Enerpac HF oil as required.
c. Air muer missing or damaged. Replace air muer.
d. Air leaks in hydraulic system. Check all points where air might leak into system. Tighten, repair or replace
components as required.
e. Clogged or blocked pump intake
screen.
Have hydraulic reservoir and intake screen flushed and cleaned by
Enerpac Authorized Service Center.
f. Air motor worn or damaged. Have air motor inspected by Enerpac Authorized Service Center. Repair or
replace components as required.
3. Oil is overheating. a. Low oil level in hydraulic reservoir. Add Enerpac HF oil as required.
b. Oil viscosity too high or too low. Drain oil from reservoir and refill with Enerpac HF oil.
c. Excessive cycling of cylinder. Reduce cycling of cylinder. Allow time for oil to cool between lifts.
d. Jack is overloaded. Reduce load or use a dierent jack of higher capacity.
NOTICE: Oil may overheat if jack is overloaded, and oil runs over the relief
valve for a prolonged period of time.
e. High pressure leakage at the pump. Have hydraulic system inspected by Enerpac Authorized Service Center.
Repair or replace components as required.
(Continued on next page)

18
Table 10 - Troubleshooting Guide (Continued)
Symptom Possible Cause Solution
4. Motor does not run
when either pendant
button is depressed.
a. Air supply valve in the CLOSED
position.
Move valve lever to the OPEN position. Check that filter/regulator gauge
indicates pressure.
b. Insucient compressed air pressure. Check air pressure at filter/regulator. Increase regulator setting if pressure
shown on gauge is too low. Do not exceed 120 psi [8,3 bar].
c. Insucient compressed air volume. If necessary, increase volume of compressed air or increase size of supply
air line to meet airflow and pressure requirements.
NOTICE: If pressure gauge reading drops a large amount (more than about
40 psi [2,75 bar]) when either pendant button is depressed, it is an indication
that the available compressed air volume may be too low.
d. Air muer restricted by ice or debris. Check air muer for ice or debris. Replace muer if clogged.
Refer to step 10 of Troubleshooting chart if ice is present.
e. Moisture in compressed air causing
ice formation in motor.
Be sure that compressed air is clean, dry and free of water.
Refer to step 10 of Troubleshooting chart if ice formation is present or
suspected.
f. Pendant damaged. Have pendant assembly inspected by Enerpac Authorized Service Center.
Repair or replace components as required.
g. Pneumatic control circuit components
leaking, worn, damaged or out of
adjustment.
Have pneumatic control circuit inspected by Enerpac Authorized Service
Center. Repair or replace components as required.
h. Hydraulic system components
leaking, worn, damaged or out of
adjustment.
Have hydraulic system inspected by Enerpac Authorized Service Center.
Repair or replace components as required.
i. Motor physically locked and/or pump
element seized.
Have air motor, hydraulic pump and related components inspected by
Enerpac Authorized Service Center. Repair or replace components as
required.
5. Motor starts when
pendant UP or DOWN
button is depressed,
but cylinder does not
move, or moves only a
small amount.
NOTICE: When
pendant DOWN
button is depressed,
the cylinder will
move upward a
small amount before
retraction begins. This
is normal operation.
a. Insucient compressed air pressure
or volume.
Check air pressure at filter/regulator. Increase regulator setting if pressure
shown on gauge is too low. Do not exceed 120 psi [8,3 bar].
If necessary, increase volume of compressed air or increase size of supply
air line.
b. Air muer restricted by ice or debris. Check muer for ice or debris. Replace muer if clogged.
Refer to step 10 of troubleshooting if ice formation is present.
c. Jack is overloaded. Reduce load or use a dierent jack of a higher capacity.
d. Cylinder hydraulic control valve not
shifting.
Have control valve inspected by Enerpac Authorized Service center. Repair
or replace components as required.
NOTICE:
A manual override pin is located on each end of the valve. These
overrides can be used to shift the valve to test cylinder retract and extend
operation.
e. Lock nut spin-up sensor dirty
or plugged (this symptom is applicable
to the cylinder advance circuit only).
Have lock nut spin-up sensor checked by Enerpac Authorized Service
Center. Verify that sensor ports and air lines are not dirty or blocked.
f. Cylinder lock nut not turning. Refer to step 9 of troubleshooting.
g. Pneumatic system air line lubricator is
overfilled.
Drain excess lubricant from air line lubricant bowl. Do not operate jack for
8 to 12 hours to allow excessive lubricant to clear from jack pneumatic
control circuit.
h. Pneumatic control circuit components
leaking, worn, damaged or out of
adjustment.
Have pneumatic control circuit inspected by Enerpac Authorized Service
Center. Repair or replace components as required.
i. Hydraulic system components leaking,
worn, damaged or out of adjustment.
Have hydraulic system inspected by Enerpac Authorized Service Center.
Repair or replace components as required.
6. Cylinder advances
when pendant DOWN
button is depressed.
a. Proximity-2 lock nut position sensor
dirty or plugged.
Have Proximity-2 sensor checked by Enerpac Authorized Service Center.
Verify that sensor ports and air lines are not dirty or blocked.
b. Pneumatic system air line lubricator
is overfilled.
Drain excess lubricant from air line lubricant bowl. Do not operate jack for 8
to 12 hours to clear excessive lubricant from jack pneumatic control circuit.
(Continued on next page)

19
Table 10 - Troubleshooting Guide (Continued)
Symptom Possible Cause Solution
7. Cylinder stops
retracting when lock
nut contacts cylinder
housing. Does not fully
retract.
a. Lock nut not turning. Refer to Step 9 of troubleshooting.
b. Lock nut spin-up sensor dirty or
plugged.
Have lock nut spin-up sensor checked by Enerpac Authorized Service
Center. Verify that sensor ports and air lines are not dirty or blocked.
c. Pneumatic system air line lubricator is
overfilled.
Drain excess lubricant from air line lubricant bowl. Do not operate jack for 8
to 12 hours to clear excessive lubricant from jack pneumatic control circuit.
d. Pneumatic control circuit components
leaking, worn, damaged or out of
adjustment.
Have pneumatic control circuit inspected by Enerpac Authorized Service
Center. Repair or replace components as required.
e. Hydraulic system components
leaking, worn, damaged or out of
adjustment.
Have hydraulic system inspected by Enerpac Authorized Service Center.
Repair or replace components as required.
8. Lock nut turns too
slowly when cylinder is
retracted.
Cylinder stops part-
way and will not fully
retract.
a. Lock nut not turning freely on cylinder
threads.
Clean and lubricate cylinder threads. Refer to Section 7.9.
b. Lock nut drive train components are
worn or loose.
Have Enerpac Authorized Service Center inspect condition of lock nut drive
chain, sprockets and related components. Repair or replace components
as required.
c. Cylinder lowering too fast. Have Enerpac Authorized Service Center inspect the counterbalance
valve and related hydraulic system components. Adjust, repair or replace
components as required.
9. Lock nut not turning. a. Cylinder threads need lubrication. Clean and lubricate cylinder threads. Refer to Section 7.9.
b. Lock nut drive chain derailed, broken
or worn.
Inspect lock nut drive chain. Reinstall or replace chain as required.
Determine if other problems may have caused drive chain wear or failure.
c. Lock nut drive components are worn
or loose.
Have Enerpac Authorized Service Center inspect condition of lock nut drive
chain, sprockets and related components. Repair or replace components
as required.
d. Lock nut position sensors dirty or
plugged.
Check the spin-up sensor and Proximity-2 sensor. Verify that sensor ports
and air lines are not dirty or blocked. Refer to step 10 of troubleshooting if
ice has formed on or inside sensors.
e. Pneumatic control circuit components
leaking, worn, damaged or out of
adjustment.
Have pneumatic control circuit inspected by Enerpac Authorized Service
Center. Repair or replace components as required.
f. Hydraulic system components leaking,
worn, damaged or out of adjustment.
Have hydraulic system inspected by Enerpac Authorized Service Center.
Repair or replace components as required.
10. Ice formation at
pump air muer.
or
Ice formation at lock
nut position sensors.
a. Water in the air filter bowl. Check air filter bowl for water. Drain water from bowl if present.
b. Air filter element dirty. Clean or replace air filter element (inside filter/regulator).
c. Air line lubricator is empty. Fill lubricant bowl with anti-freeze lubricant. Refer to Section 7.6 for
additional information.
d. Air line lubricator drip speed
incorrect.
Adjust the lubricator drip speed to 4 to 5 drops per minute.
e. Air supply contains excessive water. Reduce amount of water in air supply.
11. Jack is dicult to
roll on wheels.
a. Low tire inflation pressure. Check tire inflation pressure. Add air if low.
Pressure should be 90 psi [6,2 bar].
b. Wheel bearings need lubrication. Apply grease to wheel bearings. See Section 7.8.
c. Wheel lock nut out of adjustment. Loosen lock nut until wheel rotates freely.
d. Caster wheels worn or stuck. Inspect caster wheels for wear. Verify that each caster wheel rotates and
pivots freely. Lubricate bearings with a high quality wheel bearing grease.
Replace caster wheels if worn or damaged. See Section 7.8.

20
NOTES: OBSERVACIONES: NOTAS: 注释：
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