Big Joe J1-192 Maintenance Repair Parts Manual page 19

MALFUNCTION
TROUBLE WITH LIFTING OR
LOWERING - Continued
Forks drifts down under load when
in a raised position.
TROUBLE WITH STEERING
BL-J1-192-0315 - 11-19-2019
Table 3-1 Troubleshooting Chart - Continued
PROBABLE CAUSE
Leak in hydraulic system, lift cylin-
der or lowering valve.
a. Faulty fuse.
b. Check all wiring. A loose con-
nection may be the cause of
malfunction.
c. Defective potentiometer.
d. Defective controller.
e. Defective steer motor.
CORRECTIVE ACTION
Check for leaking fitting in hydrau-
lic line and repair as required.
Repack lift cylinder or replace
valve assembly.
Test fuses.
Tighten all loose connections
before further troubleshooting.
Check and replace potentiometer
if defective.
Check for proper operation and
replace if necessary.
Replace if necessary.
3-3