Sunex 66037 User manual

66037 1 Rev. 09/14/05
DESCRIPTION
Model 66037 service jack is a self-contained device designed for
lifting, but not sustaining a partial vehicular load. It consists of a
frame with wheels and swivel casters supporting a mechanism that
actuates a pivoting lift arm equipped with a saddle. It is designed for
use by professional auto mechanics.
THIS IS A LIFTING DEVICE ONLY. DO NOT MOVE OR DOLLY THE VEHICLE
WHILE ON THE JACK. IMMEDIATELY AFTER LIFTING, SUPPORT THE VEHICLE
WITH APPROPRIATE MEANS.
DO NOT OVERLOAD. OVERLOADING CAN CAUSE DAMAGE TO OR FAILURE
OF THE JACK.
LIFT ONLY ON AREAS OF THE VEHICLE AS SPECIFIED BY THE VEHICLE
MANUFACTURER.
CENTER LOAD ON SADDLE PRIOR TO LIFTING. OFF-CENTER LOADS MAY
CAUSE DAMAGE TO JACK, LOSS OF LOAD, PROPERTY DAMAGE, PERSONAL
OR FATAL INJURY.
THIS JACK IS DESIGNED FOR USE ONLY ON HARD LEVEL SURFACES CAPABLE
OF SUSTAINING THE LOAD. USE ON OTHER THAN HARD LEVEL SURFACES
CAN RESULT IN JACK INSTABILITY AND POSSIBLE LOSS OF LOAD.
NO ALTERATIONS TO THE JACK SHALL BE MADE.
READ, STUDY AND UNDERSTAND THE OPERATING MANUAL PACKED WITH
THIS JACK BEFORE OPERATING.
FAILURE TO HEED THESE WARNINGS MAY RESULT IN LOSS OF LOAD,
DAMAGE TO JACK, AND/OR FAILURE RESULTING IN PROPERTY DAMAGE,
PERSONAL OR FATAL INJURY.
• Heavy gauge flanged
steel frame
• Heavy duty black steel
swivel casters and 2-1/4"
wide-track front wheels
• Round cast steel saddle
with 1" thick rubber pad
• Dual piston power unit
for rapid lifting
• Dual return spring
• Safety overload system
prevents use beyond
rated capacity
Capacity: .............3.5 Tons
Low Height: ..................4"
Raised Height: .......19.25"
Length: .......................29"
Chassis Width:
.....14-1/2"
Handle Length:
.....50-1/2"
(2 piece)
Saddle Diameter
(with pad):
.................5.3"
Shipping Weight: .. 115 lbs
FEATURES/SPECIFICATIONS
BEFORE USE
IMPORTANT! BEFORE USING THIS JACK:
The breather located below hole in cross plate must be opened. Insert
slotted screw driver through hole and turn breather screw counter
clockwise until it stops turning. Do not force screw past stopping
point.
Air may become trapped in the hydraulic system during transit.
To purge air:
1. Open release valve by turning handle counterclockwise.
2. Pump handle rapidly 4 full strokes. This will expel air
that mayhave entered hydraulic fluid passages during transit.
3. Close release valve by rotating handle clockwise
and pump handle.
4. If lift arm raises to full height, jack is ready for use. If not,
repeat this procedure or follow trouble shooting instructions
provided.
Breather
MODEL 66037
3-1/2 Ton Capacity
Service Jack with
Quick Lift System
FOR YOUR SAFETY AND TO PREVENT INJURY:
Use Service Jack
for lifting purposes
ONLY.
Always support
vehicle with
jack stands.

66037 2 Rev. 09/14/05
INSPECTION
Visual inspection should be made before each use of the
jack, checking for leaking hydraulic fluid and damaged,
loose or missing parts. Each jack must be inspected by a
manufacturer’s repair facility immediately, if subjected to
an abnormal load or shock. Any jack which appears to be
damaged in any way, found to be badly worn, or operates
abnormally MUST BE REMOVED FROM SERVICE until
necessary repairs are made by a manufacturer’s authorized
repair facility. It is recommended that an annual inspection
of the jack be made by a manufacturer’s authorized repair
facility and that any defective parts, decals or warning labels
be replaced with manufacturer’s specified parts.
A list of authorized repair facilities is available from
the manufacturer.
OPERATING INSTRUCTIONS
IMPORTANT: Before attempting to raise a vehicle, check
vehicle service manual for recommended lifting surfaces.
1. To raise load: Close release valve tightly (by turning
handle clockwise). DO NOT OVER TIGHTEN. Position
jack under load so that saddle will contact load firmly and
load is centered so it cannot slip. Operate jack handle until
saddle approaches the load. Once again check to see that
saddle is correctly positioned. Raise load to desired height.
Place jack stands of appropriate capacity under the vehicle.
DO NOT CRAWL UNDER VEHICLE WHILE LIFTING
VEHICLE OR PLACING OR REMOVING JACK
STANDS! Place jack stands at vehicle manufacturer's
recommended lift areas that provide stable support for
the raised vehicle.
2. To lower load: Open release valve VERY SLOWLY
(by turning handle counterclockwise). When release valve
is opened, saddle and load will be lowered. Lower the
vehicle slowly so as not to shock load the jack stands.
Once repairs are completed, raise vehicle enough to
remove jack stands. Lower vehicle very slowly.
CAUTION: Keep hands or feet away from the hinge
mechanism of the jack.
MAINTENANCE
IMPORTANT: When adding or replacing hydraulic fluid,
always use a quality hydraulic fluid. DO NOT use brake
fluid, alcohol, glycerine, detergent motor oil, or dirty oil as
improper fluid can cause serious internal damage to jack.
To add hydraulic fluid: With saddle fully lowered and jack on
level ground, remove breather. The hydraulic fluid should just
cover the surface of the internal cylinder visible through the hole.
Do not overfill. Replace breather. If low, add hydraulic fluid
as needed.
Maintenance and Inspection: The owner and/or user
must maintain and inspect the jack in accordance with the
manufacture's instruction
LUBRICATION
All moving joints require lubrication on a regular maintance
schedule. Remove handle and grease the lower end of handle
where it rotates in the handle socket. Using a grease gun,
lubricate the lift arm pivot shaft grease fitting until grease
appears at the end of the shaft. Grease all lift arm linkages,
front wheels and rear casters.
OWNER/USER RESPONSIBILITY
The owner and/or user must have a thorough understanding of
the manufacturer’s operating instructions and warnings before
using this jack. Personnel involved in the use and operation of
equipment shall be careful, competent, trained, and qualified
in the safe operation of the equipment and its proper use when
servicing motor vehicles and their components. Warning
information should be emphasized and understood. If the
operator is not fluent in English, the manufacturer’s instructions
and warning shall be read to and discussed with the operator
in the operator’s native language by the purchaser/owner,
making sure that the operator comprehends its contents.
Owner and/or user must study and maintain for future refer-
ence the manufacturers’ instructions. Owner and/or user is
responsible for keeping all warning labels and instruction
manuals legible and intact. Replacement labels and literature
are available from the manufacturer.
PROPER STORAGE
It is recommended that this jack be stored in a dry location
with all wheels touching the ground on a relatively level
surface.
TROUBLESHOOTING
Important: Service jacks are self-contained devices used for
lifting, but not sustaining, a partial vehicular load. In accor-
dance with ASME-PALD standard, section 10-4.1.2 Load
Sustaining Test: “A load not less than the rated capacity…
shall not lower more than 1/8” (3.18mm) in the first minute,
nor a total of .1875” (4.76mm) in 10 minutes.” Leak down
within this range is considered normal operation and is NOT
a warrantable defect.

66037 3 Rev. 09/14/05
Index Part
No. No. Description Qty.
1 RS3501 Retaining Ring 2
2 RS3502 Wheel 2
3 Side Plate Assembly 1
4 Bolt 2
5 RS35A05 Torsion Spring 1
6 RS35A06 Handle Socket 1
7 RS3526 Bolt 1
8 Screws 4
9 Bolt (handle socket) 2
10 Spring Washer 18 2
11 RS3511 Hex Nut M16 2
12 RS3512 Caster Assembly 2
13 Hex Nut M16 2
14 Spring Washer 16 4
15 Spring Washer 12 4
16 RS3516 Hex Bolt M12x20 2
17 Pull Rod 1
18 Hex Nut M12 2
19 Retaining Ring 2
20 Long Linkage 2
21 Retaining Ring 25 2
22 Shaft Arm 1
Index Part
No. No. Description Qty
23 Spring Washer 24 2
24 Hex Nut M24 2
25 RS35A25 Power Unit Assembly 1
RS35A25SK Seal Kit for Power Unit 1
26 Spring 2
27 RS3501-1 Washer 2
28 RS3520A Block Linkage (incl. #29) 1
29 Split Pin 4x25 1
30 Inspection Plate 1
31 RS3544 Handle Bumper 1
32 RS3535 Handle, Lower 1
33 RS3536 Handle, Upper 1
34 RS3534 Hex Bolt M6x35 1
35 RS35GF Grease Fitting 1
37 RS3506 Saddle 1
38 Lift Arm Assembly 1
39 RS3530 Release Assembly 1
40 RS35BA Breather 1
41 RS3524-1 Cap for pump plunger 2
42 RS3524-2 Pin for pump plunger cap 2
43 RS3543SUN Saddle Cover 1
1
227
3
4
14
13 12
15
16
18
15
17
14
11
9
10
8
5
30 6 7
31
32
33
34
25
39
26
40
28
29
24
23
22
35
21
20
19
38
37
66037
3-1/2 TON CAPACITY SERVICE
JACK WITH QUICK LIFT SYSTEM
Only those index numbers listed with part numbers are available for purchase.
43
42 41

66037 4
PROBLEM
Jack will not lift load or
leaks down excessively
Jack will not hold load
or handle rises
Jack will not lift to
its full height
Jack will not lower
completely
Jack will not lift smoothly
or jack feels spongy
SOLUTION
The release valve is not closed. Turn the valve clockwise tightly.
If this does not work, remove handle, lubricate handle
receptacle and handle end, then retry.
Low on hydraulic fluid. Refill the jack to the correct level of
hydraulic fluid, using an approved hydraulic fluid or jack oil.
Pump seals or back-up ring may be defective. Clean hydraulic fluid
passages, replace seals and refill hydraulic fluid.
(Must be serviced by qualified service center)
The hydraulic system has trapped air.
Open the release valve, pump handle rapidly (4) full strokes
to purge air, close release valve.
Return spring is broken or linkages are binding. Replace spring if bro-
ken. Grease pivot shaft and all lift arm linkages.
Discharge ball is not sealing hydraulic system and oil may be dirty.
Manually flush hydraulic system. Open the release valve, as required,
to raise and lower the lift arm. Manually raise
and lower lift arm.
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