Page 46
FUNCTION SYMPTOM POSSIBLE CAUSE REMEDY
Troubleshooting Diagnosis Chart
6.20
Faulty
Fold
7.00
ROLL STOP
LATCH
Faulty
Latching
7.10
Faulty
Latching
8.10
No
Operation
8.20
Motor Runs
But
Doesn’t Lift
8.00
PLATFORM
UP
6.10
Faulty
Unfold
6.00
OUTBOARD
ROLL STOP
6.11 See 5.11, 5.12, 5.13, 5.14 and 5.15
6.12 Roll stop cylinder compression
spring loose, weak or defective
6.13 Roll stop cylinder rod length
6.14 Worn bushings and/or pins
6.15 Mechanical binding
6.16 Roll stop lever damaged or
mounting hardware missing
6.17 See 1.00 and 2.15 also
6.18 Down Solenoid/Valve: Poor
connection, bent shaft or contami-
nated filter
6.21 Roll stop cylinder leaks
6.22 Roll stop cylinder breather plugged
6.23 Excessive roll stop cylinder drag
6.24 See 1.00, 6.10 and 8.00
7.11 Platform not raised 2" above the
ground level
7.12 Damaged, detached or missing
latch spring
7.13 See 5.13, 5.14, 5.15, 5.16, 6.12
and 6.13
8.11 Backup pump release valve not
closed
8.12 See 1.00
8.13 Up/Fold microswitch out of
adjustment or defective
8.14 Microswitch harness disconnected
or damaged
8.15 Up/Fold solenoid not functioning
8.16 Motor brushes worn
8.21 See 8.11
8.22 Low hydraulic fluid supply. Note:
Fluid should be changed if there is
visible contamination. Inspect the
hydraulic system for leaks if fluid
level is low.
8.23 Leak in hydraulic system
8.24 Cylinder(s) leak
8.25 Down solenoid/valve stuck open
due to contamination or otherwise
defective
8.31 Relief valve set too low
8.32 Excessive load
8.33 See 3.20, 8.16 and 8.20
Adjust and tighten Allen head lock collar
or replace spring.
Adjust (loosen jam nut and adjust
cylinder rod as detailed on page 25).
Note: It may be necessary to release
spring tension.
Replace bushings and/or pins
Check and correct
Correct or replace
Check for loose connection or replace.
See Systems Descriptions for Quick
Check Procedure
Replace cylinder
Correct
Replace cylinder
Raise platform 2" minimum.
Correct or replace
Close valve
Adjust or replace.
See Microswitches in
Systems Descriptions for details (pages
36-39)
Connect, repair or replace
Check for loose connection or replace
Replace pump motor
Add Dextron III transmission fluid.
Check oil level with platform fully
lowered and roll stop fully unfolded.
See Systems Descriptions for details
Repair
Repair or replace —
See Systems
Descriptions for details.
Replace
Factory set at 2100 psi.
See Systems
Descriptions for adjustment procedure
Remove excess weight
continued continued
8.30
Sluggish
Operation
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