Ranger RTJ-3000, Installation And Operating Manual, Page: 5 / 8

5
OPERATING INSTRUCTIONS
1. Follow the vehicle’s recommended service procedure
for removal of the component.
2. Position the jack under the vehicle.
3. Raise the jack by operating the foot pump until the
saddle touches the component.
4. Adjust the support brackets to fit the component.
5. Use the tilt crank to align the saddle with the
component.
6. Finish raising the jack to the component. Secure the
chain assembly around the component.
MAINTENANCE
1. Regularly lubricate all moving parts of the jack. Pay
special attention to the lift screw and related linkages.
A medium weight lubricating grease should be used
on all external moving parts, such as the bearing
surface, pivot points, tilt screws, etc.
2. Regularly check the oil level. With the saddle fully
lowered, remove the breather screw, and check the
oil level. The oil level should be at the bottom of the
filler screw holes. Add oil if necessary.
3. Use only hydraulic jack oil. DO NOT use hydraulic
brake fluid.
4. If the jack fails to operate, check the oil level and/or
bleed unit before seeking service.
5. DO NOT use this jack as a wash rack when washing
or steam cleaning transmissions.
6. Before each use, follow the pre-check list to ensure
components are in good working order. If any suspect
item is found remove jack from service and take
necessary action to remedy the problem.
7. DO NOT use the jack if you believe it has been
subjected to an abnormal load or shock. If in doubt
contact your local service agent.
8. Periodically check the pump piston rod for signs of
corrosion. Clean exposed areas with a clean oiled
cloth.
TROUBLE CAUSE SOLUTION
Unit fails to extend or extends
partially
1. Low fluid level
1. Refer to Maintenance section and fill to
correct fluid level.
Incomplete or spongy cylinder re-
sponse when foot pedal is pumped
1. Low fluid level
2. Air in system
1. Fill to correct fluid level.
2. Refer to Bleeding Air from the Hydraulic
System.
Abnormal leakage through unit
breather
1. Low fluid level
1. Refer to Maintenance section and fill to
correct fluid level.
Unit fails to extend when foot pedal
is pumped
1. Release valve malfunction
2. Contamination
3. Cylinder packing failure
1. Pump foot pedal with release valve open.
2. Disassemble and clean unit.
3. Install the necessary items from the seal
kit.
Cylinder creeps
1. Load exceeds maximum lifting
capacity
2. Release valve is leaking
1. Reduce load or use jack with sufficient
lifting capacity.
2. Flush release valve by pumping foot pedal
with release valve open.
Cylinder doesn’t retract when
release pedal is activated
1. Light load
2. Cylinder is binding
1. Unit requires 35 lbs. to return.
2. Disassemble unit; replace defective parts.
Cylinder doesn’t extend
1. Contamination
2. Bad packing
1. Disassemble and clean unit.
2. Install new seal kit.
Cylinder extends when foot pedal
is pressed, and retracts as foot
pedal retracts
1. Release valve malfunction
2. Contamination
1. Flush release valve by pumping foot pedal
with release valve open.
2. Disassemble and clean unit.
TROUBLESHOOTING GUIDE