Tronair 02A7843-0112, Operation & Service Manual

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Model: 02A7843-0112
25 Ton Single Stage Jack
01/2004 | Rev. 04 Page | 3
7.0 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
ram(s) Damaged o-ring, backup ring or inner
cylinder wall Remove ram(s) 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
Ram(s) 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)
Ram(s) 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
8.0 GUARANTEES/LIMITATION OF LIABILITY
Tronair products are warranted to be free of manufacturing or material defects for a period of one year after shipment to the
original customer. This is solely limited to the repair or replacement of defective components. This warranty does not cover the
following items:
a) Parts required for normal maintenance
b) Parts covered by a component manufacturers warranty
c)
Replacement parts have a 90-day warranty from date of shipment
If you have a problem that may require service, contact Tronair immediately. Do not attempt to repair or disassemble a product
without first contacting Tronair, any action may affect warranty coverage. When you contact Tronair be prepared to provide the
following information:
a) Product Model Number
b) Product Serial Number
c)
Description of the problem
If warranty coverage is approved, either replacement parts will be sent or the product will have to be returned to Tronair for
repairs. If the product is to be returned, a Return Material Authorization (RMA) number will be issued for reference purposes
on any shipping documents. Failure to obtain a RMA in advance of returning an item will result in a service fee. A decision on
the extent of warranty coverage on returned products is reserved pending inspection at Tronair. Any shipments to Tronair must
be shipped freight prepaid. Freight costs on shipments to customers will be paid by Tronair on any warranty claims only. Any
unauthorized modification of the Tronair products or use of the Tronair products in violation of cautions and warnings in any
manual (including updates) or safety bulletins published or delivered by Tronair will immediately void any warranty, express or
implied.
The obligations of Tronair expressly stated herein are in lieu of all other warranties or conditions expressed or implied.
Any
unauthorized modification of the Tronair products or use of the Tronair products in violations of cautions and
warnings in any manual (including updates) or safety bulletins published or delivered by Tronair will immediately
void any warranty, express or implied and Tronair disclaims any and all liability for injury (WITHOUT LIMITATION and
including DEATH), loss or damage arising from or relating to such misuse .
9.0 APPENDICES
APPENDIX I HC-1751 Parts List for 3,250 psi Hand Pump
APPENDIX II Haskel MLP-20/46D Technical Specifications & Performance Data & Drawing 28550
APPENDIX III Safety Data Sheet Hydraulic Fluid (MIL-PRF-5606)