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5 Ton (4.5 Metric Ton) Single Stage Jack
Models: 02-7856-0100 (Standard)
02A7856-0100 (with Air Pump Option)
02B7856-0100 (with Air Pump Option & Spring Loaded Casters)
02C7856-0100 (with Spring Loaded Casters)
11/2004 - AA - Rev. 04
- 10 -
9.0 MAINTENANCE
(continued)
9.6 PNEUMATIC
PUMP
See Appendix II Haskel Air Pump Manufacturer Data for complete parts list and repair information.
10.0 TROUBLE SHOOTING
Ram will not rise or rises erratically
P
ROBABLE
C
AUSE
C
ORRECTIVE
A
CTION
High pressure leaks (at joint, plugs or tubing)
Re-tighten or repair
Leaky discharge check valve
Open release valve. Pump rapidly to dislodge.
Or repair pump.
Leaky ram O-ring packing
Replace packing
(Reference Parts List
−
K-1049 Kit)
Leaky release valve
Tighten release valve
(See Appendix III)
Leaky pump O-ring packing
Repair pump
(See Appendix III)
Lack of oil
Refill reservoir with oil (MIL-H-5606).
Check system for leaks.
Sticking inlet check valve
Open release valve. Pump rapidly to dislodge.
Or repair pump.
Air in hydraulic system
Bleed system. With rams fully retracted, open release
valve. Pump rapidly and close release valve.
Jack will not lower
P
ROBABLE
C
AUSE
C
ORRECTIVE
A
CTION
Ram lock nut not loosened
Rotate nut as ram is lowered
Broken pump release valve
Repair pump
(See Appendix III)
Bent ram
Replace suspected ram assembly
O-ring (Pinched or rolled)
Replace packing
(See Parts List
−
K-1049 Kit)
Check cylinder and rams for rust and pitting on inside
diameter walls.
(See Section 9.0 Maintenance/General)
11.0 PROVISION OF SPARES
Recommended Spares to be kept on hand:
K-1049
Kit, Ram Seal Replacement
HK-1685 Kit, Repair Fluid Seal (Air Option only)
HK-1686 Kit, Repair Air Seal (Air Option only)
K-1000
Kit, Pump Seal Replacement
Spare parts may be obtained from the manufacturer:
TRONAIR
, INC.
Telephone: 419-866-6301 or 800-426-6301
1740 Eber Road
Fax:
419-867-0634
Summary of Contents for 02-7856-0100
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Page 25: ...APPENDIX I Hydraulic Schematic...
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Page 29: ...APPENDIX II Haskel Air Pump Technical Specifications Performance Data Drawing 28550...
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Page 35: ...APPENDIX III HC 1753 Hand Pump Parts List...
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Page 43: ...APPENDIX IV Material Safety Data Sheet MIL H 5606 Hydraulic Fluid...
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