Cornwell Tools CSESJ350A User manual

CSESJ350A / CSESJ350ANG 1 11/10/2020
Manufactured to comply with the
ASME PASE Safety Standard
Copyright © Professional Tool Products, 2020
All rights reserved
OPERATING MANUAL •WARNING INFORMATION •PARTS LIST
CSESJ350A (BLUE) /
CSESJ350ANG (NEON GREEN)
3-1/2 Ton Service Jack
Capacity ................................3.5 Ton
Low Height ................................3.5"
Raised Height............................20.25"
Length .................................29.75"
Chassis Width ............................14.2"
Saddle Diameter............................4.7"
Shipping Weight .......................105.6 Lbs.
SPECIFICATIONS

CSESJ350A / CSESJ350ANG 2 11/10/2020
IMPORTANT: READ THESE INSTRUCTIONS BEFORE OPERATING
BEFORE USING THIS DEVICE, READ THIS MANUAL COMPLETELY AND THOROUGHLY, UNDERSTAND ITS OPERATING
PROCEDURES, SAFETY WARNINGS AND MAINTENANCE REQUIREMENTS.
It is the responsibility of the owner to make sure all personnel read this manual prior to using the device. It is also the responsibility of the
device owner to keep this manual intact and in a convenient location for all to see and read. If the manual or product labels are lost or
not legible, contact Cornwell for replacements. If the operator is not fluent in English, the product and safety instructions shall be read to
and discussed with the operator in the operator's native language by the purchaser/owner or his designee, making sure that the operator
comprehends its contents.
THE NATURE OF HAZARDOUS SITUATIONS
The use of portable automotive supporting devices are subject to certain hazards that cannot be prevented by mechanical means,
but only by the exercise of intelligence, care, and common sense. It is therefore essential to have owners and personnel involved in the
use and operation of the equipment who are careful, competent, trained, and qualified in the safe operation of the equipment and its
proper use. Examples of hazards are dropping, tipping or slipping of loads caused primarily by improperly securing loads, overloading,
off-centered loads, use on other than hard level surfaces, and using equipment for a purpose for which it was not designed.
METHODS TO AVOID HAZARDOUS SITUATIONS
• Read, study, understand & follow all instructions before using.
• Inspect the jack before each use. Do not use if damaged, altered, modified, in poor condition, leaking hydraulic fluid or unstable due
to loose or missing components. Make corrections before using.
• Use only on a hard level surface capable of supporting load and free from obstructions so the jack is free to reposition itself during
lifting and lowering operations.
• Lift only on areas of the vehicle as specified by the vehicle manufacturer.
• User and bystanders must wear eye protection that meets ANSI Z87.1 and OSHA standards.
• Do not use jack beyond its rated capacity. Do not shock load.
• This is a lifting device only. Immediately after lifting, support the vehicle with jack stands capable of sustaining the load before
working on the vehicle.
• Center load on saddle. Be sure setup is stable before working on vehicle.
• Do not move or dolly the vehicle while on the jack.
• Do not use any materials that may serve as risers, spacers or extenders between the stock lifting saddle and the load.
• Do not use any adaptors that replace the stock lifting saddle unless approved or supplied by the jack manufacturer.
• Always lower the jack slowly and carefully.
• Do not use (or modify) this product for any other purpose than that for which it was designed without consulting the manufacturer's
authorized representative.
• Failure to heed these warnings may result in serious or fatal personal injury and/or property damage.
WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer and
birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
CONSEQUENCES OF NOT AVOIDING HAZARDOUS SITUATIONS
Failure to read this manual completely and thoroughly, understand its OPERATING INSTRUCTIONS, SAFETY WARNINGS,
MAINTENANCE INSTRUCTIONS and not comply with them, and neglecting the METHODS TO AVOID HAZARDOUS SITUATIONS
could cause accidents resulting in serious or fatal personal injury and/or property damage.
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: Indicates a hazardous situation
which, if not avoided, could result in death
or serious injury.
WARNING
WARNING
WARNING
WARNING
WARNING INFORMATION
CSESJ350A (BLUE) /
CSESJ350ANG (NEON GREEN)
3-1/2 Ton Service Jack

CSESJ350A / CSESJ350ANG 3 11/10/2020
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, is 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.
SETUP
Please refer to the exploded view drawing in this manual in order to identify parts:
1. Assemble the two handle halves together by depressing the spring-loaded button on the knurled handle section (#7) and inserting the
upper handle section into the lower section (#8). The spring-loaded button should engage with the hole in the lower handle section.
2. Grease the inside of the handle yoke (#11) and remove the handle set screw (#10).
3. Install the handle assembly in the handle yoke until the bottom of the handle engages with the universal joint assembly (#13).
4. Reinstall the handle set screw in the handle yoke making sure the screw secures the handle to the handle yoke. Tighten the screw.
5. Air may become trapped in the hydraulic system during shipping and handling. Trapped air will affect the pumping performance of the
jack. If this occurs, follow the air purging procedure below:
a) Remove the four screws that secure the cover plate (A) to the jack frame (B) so the oil filler screw can be removed from the
hydraulic power unit reservoir tube (#12).
b) With the lift arm (C) in its down position, look inside the oil fill screw hole. You should be able to see the top of the power unit's
cylinder. The hydraulic fluid level should be no higher than the top of the cylinder. Correct the fluid level if it is not at the
proper height.
c) Pump the jack against a load that is at least 500 lbs. (225 Kgs). After the load is raised, slightly turn the pump handle in a
counterclockwise rotation so the load is very slowly lowered. While the lift arm is lowering, quickly pump the handle 5 or 6 full
incremental pump strokes. After pumping, lower the lift arm to its full rest position.
d) Install the oil fill screw. Rotate the handle in a clockwise rotation until tight and pump the lift arm to maximum height.
Repeat steps "a" through "d" until all of the air has been purged from the system.
e) Install the cover plate (A) with the four screws.
OPERATION
This is the safety alert symbol used for the OPERATING INSTRUCTIONS section of this manual to alert you to potential personal
injury hazards. Obey all instructions to avoid possible injury or death. IMPORTANT: Before attempting to raise any vehicle, check
vehicle service manual for recommended lifting surfaces.
1. To raise load: Turn the handle in a clockwise direction until tight. Position the jack under the load. Proceed to pump the handle in order to
raise the lift arm to the load. As the saddle at the end of the lift arm gets closer to the load, reposition the jack so the saddle will contact
the load firmly and the load is centered on the saddle. Make sure the saddle is correctly positioned. Raise the load to the desired work
height. Place jack stands of appropriate capacity at the vehicle manufacturers's recommended support areas that provide stable support
for the raised vehicle. DO NOT CRAWL UNDER VEHICLE WHILE LIFTING VEHICLE OR PLACING OR REMOVING THE JACK STANDS!
Once jack stands are positioned, turn the handle VERY SLOWLY. Lower the load to rest on the jack stands. Inspect the relationship
between the jack stands and load to make sure the setup is stable and safe. If the setup is not stable or safe, follow the preceding steps
until corrected.
2. To lower load: Follow the procedures mentioned in "To raise load" section of the OPERATING INSTRUCTIONS in order to raise the load
off the jack stands. DO NOT CRAWL UNDER VEHICLE WHILE LIFTING VEHICLE OR PLACING OR REMOVING THE JACK STANDS!
Once the load has cleared the jack stands, remove the stands from under the load and away from the work area.
Turn handle very slowly in a counterclockwise direction until the load is completely lowered to the ground. Once the jack's lifting saddle
has cleared the load, remove the jack from under the load. CAUTION: Keep hands and feet away from the hinge mechanism of the jack.
PREVENTATIVE MAINTENANCE
This is the safety alert symbol used for the PREVENTATIVE MAINTENANCE section of this manual to alert you to potential
personal injury hazards. Obey all instructions to avoid possible injury or death.
1. Always store the jack in a well protected area where it will not be exposed to inclement weather, corrosive vapors, abrasive dust,
or any other harmful elements. The jack must be cleaned of water, snow, sand, grit, oil, grease or other foreign matter before using.
2. The jack must be lubricated periodically in order to prevent premature wearing of parts. A general purpose grease must be applied to all
zerk grease fittings, caster wheels, front axle, elevator arm, handle base pivot bolts, release mechanism and all other bearing surfaces.
Worn parts resulting from inadequate or no lubrication are not eligible for warranty consideration. See page 5 for lubrication instructions.
3. It should not be necessary to refill or top off the reservoir with hydraulic fluid unless there is an external leak. An external leak requires
immediate repair which must be performed in a dirt-free environment by an authorized service center.
CSESJ350A (BLUE) /
CSESJ350ANG (NEON GREEN)
3-1/2 Ton Service Jack

CSESJ350A / CSESJ350ANG 4 11/10/2020
IMPORTANT: In order to prevent seal damage and jack failure, never use alcohol, hydraulic brake fluid or transmission oil in the jack. Use
Chevron Hydraulic Oil AW ISO 32 or its equivalent Unocal Unax AW 150.
4. Every jack owner is responsible for keeping the jack labels clean and readable. Use a mild soap solution to wash external surfaces of
the jack but not any moving hydraulic components.
5. Inspect the jack before each use. Do not use the jack if any component is cracked, broken, bent, shows sign of damage or leaks
hydraulic fluid. Do not use the jack if it has loose or missing hardware or components, or is modified in any way. Take corrective action
before using the jack again.
6. Any hydraulic repairs within the warranty period must be performed by an authorized service center.
PROPER STORAGE
It is recommended that the 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 accordance with ASME
PASE 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.” Lowering within this range is considered normal operation and is NOT a warrantable defect.
WARRANTY COVERAGE
Cornwell Quality Tools Company (“Cornwell”) warrants against defects on this product for a period of TWO (2) YEARS from the date of
original retail purchase. Subject to the conditions and limitations set forth below, Cornwell will, at its option, either repair or replace any
part of the product(s) that proves defective by reason of improper workmanship or materials.
This warranty does not cover any damage to this product that results from accident, abuse, misuse, natural or personal disaster, or any
unauthorized disassembly, repair, or modification. Repairs, disassembly and modification are only authorized to be made by Cornwell or
a warranty service center approved by Cornwell.
WARRANTY SERVICE
To obtain warranty service, contact your Cornwell dealer.
EXCLUSIONS AND LIMITATIONS
THIS WARRANTY AND THE REMEDIES SET FORTH ABOVE ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, REMEDIES AND
CONDITIONS, WHETHER ORAL OR WRITTEN, EXPRESS OR IMPLIED. CORNWELL SPECIFICALLY DISCLAIMS ANY AND ALL IMPLIED
WARRANTIES, INCLUDING, TO THE EXTENT PERMITTED BY APPLICABLE LAW, ANY WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. IF CORNWELL CANNOT LAWFULLY DISCLAIM IMPLIED WARRANTIES UNDER THIS LIMITED WARRANTY,
ALL SUCH IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURATION OF THIS WARRANTY. IN NO EVENT SHALL CORNWELL
BE LIABLE TO THE PURCHASER OR TO THE USER OF A CORNWELL PRODUCT FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL
DAMAGES BASED UPON BREACH OF WARRANTY, BREACH OF CONTRACT, NEGLIGENCE, TORT, OR ANY OTHER LEGAL THEORY. SUCH
DAMAGES INCLUDE, WITHOUT LIMITATION, EXPENSES, LOST REVENUES, LOST SAVINGS, LOST PROFITS, OR ANY OTHER INCIDENTAL
OR CONSEQUENTIAL DAMAGES ARISING FROM THE PURCHASE, USE OR INABILITY TO USE THE CORNWELL PRODUCT.
Some states do not allow the exclusion or limitation of incidental or consequential damages or exclusions or limitation on the duration of
implied warranties or conditions, so the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights,
and you may also have other rights that vary by state.
Repair kits and replacement parts are available for many Cornwell products, regardless of whether or not the product is still covered by a
warranty plan.
CSESJ350A (BLUE) /
CSESJ350ANG (NEON GREEN)
3-1/2 Ton Service Jack
PROBLEM ACTION
1. Unit will not lift rated load. Purge air from hydraulic system by following procedure under
SETUP.
2. Unit will not sustain rated load or feels “spongy” under rated
load.
Purge air from hydraulic system as above.
3. Unit will not lift to full height. Purge air from hydraulic system as above.
4. Handle tends to raise up while the unit is under rated load. Pump the handle rapidly several times to push oil past ball valves in
power unit.
5. Unit still does not operate. Contact Cornwell authorized hydraulic service center.

CSESJ350A / CSESJ350ANG 5 11/10/2020
HYDRAULIC JACK MAINTENANCE GUIDE
IMPORTANT: Service jacks are designed for lifting purposes only; always support raised load with jack stands.
REGULAR MAINTENANCE
• MONTHLY or as necessary (depending on usage)
1. Using a grease gun, add grease to grease fitting in the lift arm pivot shaft. (Use a multi-purpose NLGI type grease only.)
2. Lubricate all linkages and pivot points. (Use white lithium spray grease only.)
3. Remove handle; lubricate handle receptacle and handle end. (Use white lithium spray grease only.)
4. Lubricate both rear casters, bearing and both front wheels. (Use white lithium spray grease only.)
5. Tighten all accessible hardware.
CSESJ350A (BLUE) /
CSESJ350ANG (NEON GREEN)
3-1/2 Ton Service Jack
*
*
*
2
4
4
1
2
2
2
3
Numbers shown in this
illustration match the
step numbers above
(Regular Maintenance)
View when lift arm is raised
View from rear
NOTE: Premature wearing of parts or components caused by loose or missing hardware that have not been replaced or tightened in a correct and timely
manner are not eligible for warranty consideration.
*

PARTS LIST
CSESJ350A (BLUE) /
CSESJ350ANG (NEON GREEN)
3-1/2 Ton Service Jack
CSESJ350A / CSESJ350ANG 6 11/10/2020
A
C
B
1
2
3
55
6
7
8
9
10
11
12
13
20
14
15
16
17
18
19
6
4
4
4
Item Part
No. No. Description Qty.
1 RS35T01 Star Clip 2
2 RS35T02 Washer (M20) 2
3 RS35B03 Front Wheel 2
4 RS35B10 Rear Caster Ass'y. - Blue 2
RS35B10NG Rear Caster Ass'y. - Neon Green 2
5 RS35T08 Hex Nut & Lock Washer (M16) 2
6 RS35B11 Yoke Retaining Bolt & Washer 2
7 RS35T17 Handle Lever "B" 1
RS35T17BK Handle Lever "B" - Black 1
8 RS35T15 Handle Lever "A" 1
RS35T18BK Handle Lever "A" - Black 1
9 RS35009C Handle Bumper 1
10 RS35T13 Set Screw - Handle 1
11 RS35011C Handle Yoke 1
RS35011CNG Handle Yoke - Neon Green 1
12 RS35B20 Power Unit Ass'y. - Black 1
13 RS35T18 Universal Joint Ass'y. 1
14 RS35B24 Block Linkage - Black
(incl. Split Pin, Ret. Rings) 1
15 RS35T12 Grease Fitting 1
16 RS35T04 Retaining Ring 2
17 RS35017 Saddle 1
18 RS35018 Saddle Screw (16) 1
19 RS35019C Rubber Saddle Pad 1
20 RS35T19 Return Spring 2
N/S RS35THB Handle Button 1
N/S RSCSESJ350ALK Product Label Kit 1
N/S RSCSESJ350ANGLK Product Label Kit - Neon Green 1
Item
No. Part No. Description Qty.
1 RS35T01 Star Clip 2
2 RS35T02 Washer (M20) 2
3 RS35B03 Front Wheel 2
4 RS35B10 Rear Caster Ass'y. - Blue 2
4RS35B10NG Rear Caster Ass'y. - Neon Green 2
5 RS35T08 Hex Nut & Lock Washer (M16) 2
6 RS35B11 Yoke Retaining Bolt & Washer 2
7 RS35T17 Handle Lever "B" 1
7RS35T17BK Handle Lever "B" - Black 1
8 RS35T15 Handle Lever "A" 1
8RS35T15BK Handle Lever "A" - Black 1
9 RS35009C Handle Bumper 1
10 RS35T13 Set Screw - Handle 1
Item
No. Part No. Description Qty.
11 RS35011C Handle Yoke 1
11 RS35011CNG Handle Yoke - Neon Green 1
12 RS35B20 Power Unit Ass'y. - Black 1
13 RS35T18 Universal Joint Ass'y. 1
14 RS35B24 Block Linkage - Black (incl. Split Pin, Ret. Rings) 1
15 RS35T12 Grease Fitting 1
16 RS35T04 Retaining Ring 2
17 RS35017 Saddle 1
18 RS35018 Saddle Screw (16) 1
19 RS35019C Rubber Saddle Pad 1
20 RS35T19 Return Spring 2
N/S RS35THB Handle Button 1
N/S RSCSESJ350ALK Product Label Kit - CSESJ350A 1
N/S RSCSESJ350ANGLK Product Label Kit - CSESJ350ANG 1