Troubleshooting Ptj-A Series Pallet Trucks; Replacement Parts - Jet PTJ-A Series Operating Instructions And Parts Manual

8.0 Troubleshooting PTJ-A Series Pallet Trucks

Any disassembly of the pallet truck should be done by qualified personnel. Contact Jet technical service if
further assistance is needed.
Trouble
Hydraulic unit does not
lift.
Once lifted, truck
lowers by itself.
Forks will not lower.
Lever does not set at
neutral position
Truck doesn't roll
smoothly or evenly.

9.0 Replacement Parts

Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-
800-274-6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Having the Model Number and Serial
Number of your machine available when you call will allow us to serve you quickly and accurately.
Non-proprietary parts, such as fasteners, can be found at local hardware stores, or may be ordered from JET.
Some parts are shown for reference only, and may not be available individually.
Probable Cause
Low oil level in reservoir.
Steel ball not seated in hydraulic unit.
Worn seal(s) in piston cylinder.
Steel ball not seated in hydraulic unit.
Worn seal in piston cylinder.
Relief valve not seated properly.
Relief valve not adjusted properly.
Oil leakage from each valve.
Relief cam setscrew/nut out of
adjustment.
Relief cam or chain element broken.
Broken fork rods and linkage.
Relief cam nut on the chain (#108B) is
not positioned correctly.
Wheels have debris embedded, or out
of round due to wear.
Remedy
Make sure there is no oil leakage from
valve, and add oil.
Place the lever in the down position and
pump the handle repeatedly.
Have seal(s) replaced.
Bleed the pump.
Have seal(s) replaced.
Bleed the pump.
Reload truck within load capacity and
adjust valve using the set screw (#721).
Tighten plug of each valve.
Refer to "Adjusting Relief Cam."
Replace affected elements.
Inspect linkages for breaks or cracks.
Replace elements as needed.
Adjust the nut on the chain assembly.
Inspect and remove debris. If worn,
replace wheels. NOTE: Always replace
wheels in pairs.
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