Page 43
Troubleshooting Diagnosis Chart
FUNCTION
SYMPTOM
POSSIBLE CAUSE
REMEDY
2.20 - 2.30
Faulty or
Sluggish
Operation
continued
2.00
PLATFORM
UNFOLD
(Out)
3.20
Faulty or
Sluggish
Operation
4
.00
OUTBOARD
ROLL STOP
3.10
No
Operation
Correct/Replace/Lubricate.
See
Maintenance and Lubrication Schedule
and Diagram
Check and correct
Correct.
See Lift Positioning (pages 10-12
and Positioning and Clearance Checklist
(pages 22 and 23).
Correct or replace
Replace or adjust
Check for contamination or kinks - correct
or replace
Thin with Diesel fuel - 2 T. Change in
spring.
See Systems Descriptions for full-
time cold climate specifications
Replace
Clear obstruction
See Floor Level Guideline Adjustment on
pages 28 and 29A.
Unfold platform
Check for loose connection or replace.
See Systems Descriptions for Quick-
Check Procedure
Lower platform
Remove obstruction or lower platform in
different location (level surface)
Lubricate.
See Maintenance and
Lubrication Schedule and Lubrication
Diagram
Correct or replace.
Correct or replace.
Correct or replace.
Correct or replace.
Correct or replace.
Correct
2.22 Misalignment or damage to:
• Parallel arms and/or pivot pins
• Rotating pivot slide arms and/
or pivot pins
• Handrails and/or pivot pins
• Platform fold axles
• Platform pivot pins/lower fold arms
2.23 Mechanical binding
2.24 Misalignment of towers (upright
supports)
2.25 Unfold spring(s) out of adjustment
2.26 Platform fold/unfold cables missing
or out of adjustment
2.27 Restriction in hydraulic lines
2.28 Hydraulic fluid too thick due to cold
climate
2.29 Flow control valve(s) restricted
2.30 Object stuck in platform fold gear
2.31 Platform stop block out of
adjusment
2.41 See 2.13, 2.14
3.11 Platform not unfolded
3.12 See 1.20
3.13 Down solenoid/valve: Poor
connection, bent shaft or contami-
nated filter
3.14 See 2.13, 2.14, 2.15 and 2.23
3.22 See 2.21, 2.22, 2.23, 2.24, 2.27,
2.28, 2.29 and 3.13
4.11 Platform not fully lowered
4.12 Obstruction under platform
preventing latch foot from contact-
ing surface
4.21 See 4.10
4.22 Lack of lubrication
4.23 Roll stop damaged (bent, deformed
or misaligned)
4.24 Roll stop arm damaged (bent,
deformed or misaligned)
4.25 Roll stop foot damaged (bent,
deformed or misaligned)
4.26 Roll stop arm mounting screws
loose or missing
4.27 Roll stop foot shoulder bolts, nylon
washers, nuts or flanged bearings
damaged, loose or missing
4.28 Mechanical binding
2.40
Faulty Floor
Level Switching
3.00
Platform
DOWN
continued
continued
4.10
No
Unfold
Operation
4.20
Faulty Unfold
