Omega Lift 28045 Instructions for use

Forklift Jack
Model
28045
28047
Operating Instructions & Parts Manual
Read this manual and follow all the Safety Rules and Operating Instructions before using this product.
SFA Companies
Capacity
4 Ton
4 Ton
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
!
!WARNING
To avoid crushing and related injuries:
NEVER work on, under or around a
load supported only by a hydraulic
forklift jack. ALWAYS use adequately
rated forklift stands.
(Air option)
Model 28045 Model 28047

Figure 1 - Typical Forklift Jack Nomenclature (28047 shown)
Handle
Saddle
Lifting Arm
Oil Filler Plug
Handle Sleeve
*Air Motor
SPECIFICATIONS
Model Capacity Jack Size (L x W) Min. Height Max. Height Hydraulic Lift
28045
4 Ton 29-3/4" x 10" 2-1/8" 17-1/8" 15"
28047
SAFETY and GENERAL INFORMATION
Save these instructions. For your safety, read, understand, and follow the information provided with and on this jack
before using. The owner and operator of this equipment shall have an understanding of this jack and safe operating
procedures before attempting to use. The owner and operator shall be aware that use and repair of this product
may require special skills and knowledge. Instructions and safety information shall be conveyed in the operator's
native language before use of this jack is authorized. If any doubt exists as to the safe and proper use of this jack,
remove from service immediately.
Inspect before each use. Do not use if broken, bent, cracked or damaged parts are noted. Any jack that appears
damaged in any way, or operates abnormally shall be removed from service immediately. If the jack has been or
suspected to have been subjected to a shock load (a load dropped suddenly, unexpectedly upon it), immediately
discontinue use until jack has been checked by a factory authorized service center (contact distributor or manufacturer
for list of authorized service centers). It is recommended that an annual inspection be done by qualied personnel.
Labels and Operator's Manuals are available from manufacturer.
PRODUCT DESCRIPTION
Hydraulic Forklift Jack is designed to lift, not support, one side of a rated capacity forklift. Immediately after lifting,
forklift must be supported by a pair of appropriately rated forklift stands. Air option unit requires at least 7.8 CFM @
110 - 175 PSI.
WARNING: Never use hydraulic jack as a stand alone device. After lifting, immediately support the lifted
forklift with a pair of appropriately rated forklift stands.
!
2
*Lift Control Valve
*Air Hose
Hydraulic Unit
Front Wheel
(*) available on air option model 28047 only

3
PREPARATION
Assembly (refer to Fig. 2)
1. Attach ram plunger(1) to the swivel block(2). Insert cotter pin(3)
through the hole on swivel block and spread ends of the cotter
pin to secure the ram to the swivel block.
2. Insert handle(4) to handle sleeve(5) and secure with provided
bolt (6).
Before Use
1.
2.
Verify that the product and application are compatible.
Before using this product, read the operator's manual completely
and familiarize yourself thoroughly with the product, its components
and recognize the hazards associated with its use.
Figure 3
Height
Tread
Width
is exceeded, the forklift could reach the point of instability and tip
over or the angularity of the forklift frame could cause the jack to
kick out and drop the load. Example: If tread width = 36", then never
lift the bottom of the vehicle tire more than 9" off the oor.
3. Do not use the jack to raise all four wheels of the forklift from the
oor. Two wheels of the lift must remain in contact with the oor
at all times.
4. Do not use any kind of "cribbing" under the jack, or on top of the
lift pad area. The jack must always remain in direct contact with
the oor, and the lifting pad or notch must be in direct contact with
the fork lift.
5. The jack is designed solely for the lifting of forklift. Use of the jack
for any other purpose constitutes misuse of the jack .
3. To familiarize yourself with basic operation, locate and turn the release valve knob:
a. Clockwise until rm resistance is felt to further turning. This is the ‘CLOSED’ release valve position used to
raise the saddle.
b. Counter-clockwise, but no more than 1/2 turn from the closed position. This is the ‘OPEN’ release valve position
used to lower the saddle.
4. With saddle fully lowered and release valve closed, pump the operating handle. If lift arm responds immediately,
jack is ready for use. If jack does not respond, open release valve and pump 6 to 8 full strokes to purge air. Close
release valve and recheck operation.
5. For air option model 28047, Pour a teaspoon of good quality, air tool lubricant into the air supply inlet of the lift
control valve. Connect to air supply and operate for 3 seconds to evenly distribute lubricant.
Note: These models are equipped with the popular 1/4” NPT air coupler. When installing a different air coupler of
your choice, ensure that thread tape or compound is used when servicing connections. To ensure dependable,
trouble free operation an inline air dryer and oiler is recommended.
6. Ensure that jack rolls freely. Raise and lower the unloaded saddle throughout the lifting range before putting into
service to ensure the pump operates smoothly. Replace worn or damaged parts and assemblies with Omega
authorized replacement parts only.
Bleeding / Venting Trapped Air
With the release valve in the OPEN position (3b.) and with saddle fully lowered, locate and remove the oil ller
plug. Pump 6 to 8 full strokes. This will help release any pressurized air which may be trapped within the reservoir.
Reinstall the oil ller plug.
Safety Information
1. The jack is used to lift from the side of the forklift. However, two wheels of the lift must remain rmly on the
oor.
2. Use extreme caution when lifting narrow forklift (less than 40" wide) from the sides. Always make sure that the
height between the oor and the bottom of the raised tire is never more than one fourth (1/4th) of the vehicle's tread
width. See gure 3. (tread width is measured from centerline to centerline of the tire treads.) If the one fourth gure
Figure 2
(1)
(2)
(3)
(4)
(5)
(6)

4
!
!WARNING
•Study, understand, and follow all printed
materials provided with/on this product before use .
•Do not exceed rated capacity.
•Use only on hard, level surface.
•This is a lifting device only! Immediately
after lifting, support the forklift with a pair of
appropriately rated forklift stands.
• Position jack perpendicular to the forklift such that
the load is balanced by the remaining two wheels
in contact with surface.
• Only attachments and/ or adapters supplied by
the manufacturer shall be used.
• Do not move or dolly the vehicle while on the jack.
• No alterations shall be made to this product.
FAILURE TO HEED THESE MARKINGS MAY
RESULT IN PERSONAL INJURY AND/OR
PROPERTY DAMAGE
To avoid crushing and related injuries:
•Never work on, under or around a load
supported only by hydraulic forklift jack.
•Always use adequately rated forklift stands.
• Keep hands, feet and all other body parts out of
the area of the scissors mechanism at all times.
•Do not use this device to lift, level, lower,
support nor move a house, mobile home, travel
trailer, camper or any building structure.
•Be alert and sober when using this product.
Do not operate under the inuence of drugs or
alcohol.
!WARNING
OPERATION
Lifting
WARNING: Ensure hydraulic unit does not
contact vehicle during lift event.
1. Follow the vehicle manufacturer’s recommended
guidelines for lifting. Engage the emergency brake
and chock each unlifted wheel in both directions to
prevent inadvertent vehicle movement.
2. Close the release valve by turning it clockwise until rm
resistance is felt.
3. Verify lift point, center jack saddle under lift point.
4. Squeeze the lift control valve (model 28047 only) or
insert handle into handle sleeve and pump to contact
lift point. To lift, continue pumping until load reaches
desired height.
NOTE: for model 28047, DO NOT operate by air and
by hand pumping at the same time.
5. Transfer the load immediately to appropriately rated
forklift stands.
WARNING: NEVER use hydraulic jack as a
stand alone device! ALWAYS transfer the lifted
forklift IMMEDIATELY to a pair of appropriately
rated forklift stands. Use one pair of forklift stands
per forklift. Rated capacity is per pair only! Do
not exceed rated capacity.
!
X
!WARNING
Never lift from either end of forklift
!WARNING
Lift only on areas of the forklift as
specied by the forklift manufacturer.
Lowering
WARNING: Be sure all tools and personnel are
clear before Lowering load. Slowly open the
release valve! The more you turn the knob
counter-clockwise, the faster the load will come
down. Maintain control of the rate of speed at
which the load lowers at all times!
1. Raise forklift high enough to clear the forklift stands.
2. Remove stands carefully (always used in pairs).
3. Slowly turn the release valve counter-clockwise, but
no more than 1/2 full turn. If the load fails to lower:
a. Use another jack to raise the forklift high enough
to reinstall forklift stands.
b. Remove the malfunctioning jack and then the
forklift stands.
c. Using the functioning jack to lower the forklift.
4. After removing jack from under the forklift, fully lower
the saddle and push handle sleeve down to reduce
ram and piston exposure, rust and contamination.
!

5
MAINTENANCE
Important: Use ONLY good grade hydraulic jack oil. Avoid mixing different types of uid and Never use brake uid,
turbine oil, transmission uid, motor oil or glycerin. Improper uid can cause failure of the jack and the potential for
sudden and immediate loss of load. We recommend premium jack oil.
Adding oil
1. With saddle fully lowered set jack in its upright, level position. Locate and remove oil ller plug.
2. Fill with oil until just below the rim of oil ller hole. Reinstall the oil ller plug.
Changing oil
For best performance, replace the complete uid supply at least once per year.
1. With saddle fully lowered, remove oil ller plug.
2. Lay the jack on its side and drain the uid into a suitable container.
Note: Dispose of hydraulic uid in accordance with local regulations.
3. Fill with oil until just below the rim of oil ller hole. Reinstall the oil ller plug.
Lubrication
1. A periodic coating of light lubricating oil to pivot points will help to prevent rust and assure that pump assemblies
move freely.
2. Air pump should be internally lubricated before each use. Use good quality air tool lubricant. If no inline oiler
is used, pour a teaspoon of air tool oil into the air control valve inlet. Operate the jack with air pressure to fully
distribute the oil inside the air motor.
Cleaning
Periodically check the pump piston and ram for signs of rust or corrosion. Clean as needed and wipe with an oily cloth.
Note: Never use sandpaper or abrasive material on these surfaces!
Storage
When not in use, store the jack with saddle fully lowered.
TROUBLESHOOTING
Symptom Possible Causes Corrective Action
Jack will not lift load • Release valve not tightly closed
• Load is too heavy
• Ensure release valve tightly closed
• Consider higher capacity jack
Jack will lift, but not maintain
pressure
•Release valve not tightly closed
• Hydraulic unit malfunction
•Ensure release valve tightly closed
• Discontinue use, contact Omega
technical service
Jack will not lower after unloading • Reservoir overlled
• Linkages binding
• Fluid level low
• Drain uid to proper level
• Clean and lubricate moving parts
• Ensure proper uid level
Poor lift performance • Fluid level low
•Air trapped in system
• Ensure proper uid level
•Refer to Bleeding/ Venting
Trapped Air instructions
Will not lift to full extension • Fluid level low • Ensure proper uid level

Figure 2 - Replacement Parts Illustration for Models 28045 & 28047
6
REPLACEMENT PARTS
(refer to page 6 & 7)
Not all components of the jack are replacement items, but are illustrated as a convenient reference of location and
position in the assembly sequence. When ordering parts, please give the Model number, part number and
parts description.
Models 28045 & 28047:
A
1
B
D
E
C
D
E
F
G
J
H
K
L
M
N
2
3
45
6
7
9
8
10
11
12
13
14
15
16
17
27
22
18
19
20 21
28
24
23
26
25
29
30
31
32
33, 34
35
for model 28047

7
Replacement Parts List for models 28045 & 28047:
Seal Kit content:
Item Part No. Description Qty
1 505-9-0092-207 Oil Filler Plug 1
2 G46-6-2101-101 Handle 1
3 506-9-0264-106 Handle Grip 1
4 G34-6-1709-104 Release Valve Knob 1
5 G46-6-1710-101 Release Valve 1
6 G150-04500-000 Hyd. Cartridge,
manual 1
7 BL80-15000-000 Hyd. Cartridge, air 1
8 531-3-0270-021 Washer 1
9 G32-6-1401-102 Pump Cylinder 1
10 G32-6-1306-108 Pump Piston 1
11 G46-6-1307-106 Collar 1
12 649-1-0080-046 Hex Head Bolt 1
13 661-2-0080-014 Hex Nut 1
14 566-4-0080-508 Pin 2
15 G46-6-1301-205 Handle Sleeve 1
16 644-1-0060-044 Hex. Bolt 1
17 513-5-0016-018 Cotter Pin 2
18 G46-6-4301-109 Saddle 1
19 G46-6-4304-105 Axle, Saddle 1
20 G46-6-4305-107 Collar 2
Item Description Qty.
1 Oil Filler Plug 1
A O-ring 1
B Back-up Washer 1
C Seal 1
D O-ring 2
E Back-up Washer 2
F U-cup 1
G Back-up Washer 1
H Seal 1
J Filter 1
K Oil Seal 1
L Packing 1
M O-ring 2
N Back-up Washer 2
(**) Replacement requires special skills, knowledge, and equipment. Only an authorized service
center may perform the repair and/or replacement of these items. Contact Omega technical
service for list of service centers.
Item Part No. Description Qty
21 667-5-0160-003 C-clip 2
22 500-1-0500-304 Wheel, Front 2
23 667-5-0180-009 C-clip 2
24 601-8-0006-001 Grease tting 1
25 667-5-0190-019 E-clip 2
26 511-3-0230-005 Washer 2
27 500-1-1000-107 Wheel, Rear 2
28 602-4-0040-004 Cotter Pin 1
29 G46-6-3206-201 Bolt, Right 1
30 G46-6-3207-102 Bolt, Left 1
31 A27060-0003 Air Motor 1
32 A20060-0006 Air Hose 1
33 A20060-0015 Air Hose w/ Lift
Control Valve 1
34 A20060-0007 Lift Control Valve 1
35 A20060-0016 Air Coupler, 1/4
NPT 1
** G46-3-9901-100 Seal Kit -
-28045-L0 or
28047-L0 Label(s) -
- 28045-M0 Manual -

ONE YEAR LIMITED WARRANTY
For a period of one (1) year from date of purchase, SFA Companies will repair or replace, at its option,
without charge, any of its products which fails due to a defect in material or workmanship under normal usage. This
limited warranty is a consumer's exclusive remedy.
Except where such limitations and exclusions are specifically prohibited by applicable law, (1) THE
CONSUMER'S SOLE AND EXCLUSIVE REMEDY SHALL BE THE REPAIR OR REPLACEMENT OF
DEFECTIVE PRODUCTS AS DESCRIBED ABOVE. (2) SFA Companies SHALL NOT BE LIABLE FOR ANY
CONSEQUENTIAL OR INCIDENTAL DAMAGE OR LOSS WHATSOEVER. (3) ANY IMPLIED WARRANTIES,
INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE, SHALL BE LIMITED TO ONE YEAR, OTHERWISE THE
REPAIR, REPLACEMENT OR REFUND AS PROVIDED UNDER THIS EXPRESS LIMITED WARRANTY IS THE
EXCLUSIVE REMEDY OF THE CONSUMER, AND IS PROVIDED IN LIEU OF ALL OTHER WARRANTIES,
EXPRESS OR IMPLIED. (4) ANY MODIFICATION, ALTERATION, ABUSE, UNAUTHORIZED SERVICE OR
ORNAMENTAL DESIGN VOIDS THIS WARRANTY AND IS NOT COVERED BY THIS WARRANTY.
Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not
apply to you. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also
have other rights, which vary from state to state.
8
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