Tronair 02-0536C0110, Operation & Service Manual

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Models: 02-0536C0110, 02A0536C0110, 02B0536C0110, 02C0536C0110
5 Ton (4.5 Metric Ton) - Single Stage Jack
04/2014 | Rev. 06 Page | 8
9.0 MAINTENANCE (continued)
9.3 SERVICING JACK
To Disassemble Jack:
1. Remove mounting plate (Item 66) by unscrewing three socket head cap screws (Item 60).
2. Raise ram assembly (Item 62) to the point where it can be lifted from the jack cylinder.
To Re-assemble Jack:
Re-assemble in reverse order of above.
NOTES:

Dispose of hydraulic fluid per local and federal regulations.

To minimize air entrapment under the ram, raise the oil level in the cylinder to chamfer of the cylinder prior to
ram insertion.

Torque socket head cap screws (Item 60) to 25 lb-ft (34 N-m)
9.4
REMOVING AND SERVICING PUMP
NOTE: If pump is found faulty, call the factory for replacement or replace seals as follows:
1. Reference Appendix III HC-1948 Hand Pump Parts List during the following procedures.
2. Clamp suction (push on) hose and remove hose from pump.
3. Uncouple fitting of hydraulic hoses from pump.
4. Remove pump from jack.
5. Remove cotter pin from clevis pin.
6. Remove four (4) socket head cap screws.
7. Remove flanges.
8. Remove tube assembly.
9. Replace O-rings and backup ring. (See Appendix III for kits available.)
1. Re-assemble in reverse order.
9.5
JACK FUNCTION LOAD TEST
NOTE: If function load testing is required:
1. Take all necessary precautions to prevent injury.
2. Always jack against a load and
never against the jack itself.
3. Do not exceed a test load equal to the jack rated capacity plus 10%.
9.6
PNEUMATIC PUMP
See Appendix IV Haskel Air Pump Manufacturer Data for complete parts list and repair information.
10.0 TROUBLE SHOOTING
TROUBLE PROBABLE CAUSE ACTION
Fluid leakage at pump
piston or pump body Damaged backup ring, o-ring, piston or
pump body
Remove piston and pump body. Inspect for
damage. Replace defective part(s). Replace
removed o-ring and backup ring
External fluid leakage at
rams Damaged o-ring, backup ring or inner
cylinder wall Remove rams as a unit from cylinder. Inspect
parts. Replace o-ring and defective part(s)
Jack fails to lift rated load
Release valve not closed properly Fully tighten release valve
Low fluid level Fill to correct fluid level
Pressure relief valve improperly adjusted Adjust or replace release valve
Leakage at inlet or outlet check ball
Inspect valve body for wear or replace valve
body and check balls
Vent screw closed Open vent screw
Rams will not support load
after manual or pneumatic
pump up
Leaking ram o-ring seals
Check for external leakage, if present replace
defective seal and back up ring
Leaking pressure check valve
Inspect valve body for wear or replace valve
body and check balls
Leaking pressure relief valve
Remove release valve, inspect ball and ball
seat in pump block. Replace effective part(s)
Rams raise and fall with
each manual pump stroke
Release valve open Fully tighten release valve
Inlet check valve not seated or sticking Pump rapidly to dislodge or replace valve body
Pressure check valve not seated or sticking Pump rapidly to dislodge or replace valve body
Jack fails to lower
Ram locknut not loosened Raise jack ¼ inch and release locknut
Vent screw closed Open vent screw
O-Ring (pinched or rolled)
Replace o-ring and back-up ring, clean up
cylinder wall of debris