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TM 10-3930-643-34
TROUBLESHOOTING SYMPTOM INDEX. (cont)
3-1. Troubleshooting Index. (cont)
Paragraph/
Malfunction
Page
SERVICE BRAKE
Brakes do not engage
Brakes do not release
Brakes squeal or scrape
Low air pressure
High air pressure
Noisy compressor
PARKING BRAKE
Parking brake drags
Parking brake slips
STEERING
Slow steering at low engine RPM and slow boom
hydraulics at high engine RPM
Slow steering
Noisy operation
Hydraulic oil heating up
Insufficient steering pressure
Sticking control valve plunger
Play in steering gear
Hard steering while driving
HYDRAULIC SYSTEM
All implements fail to operate
All cylinder assemblies operate slowly
A particular cylinder assembly operates slowly
Loss of cylinder motion during operation
Load slowly drops with lift control lever in “hold”
Momentary drop of load when lift control lever
is moved from “hold” to “raise” or “raise” to “hold”
Noisy operation
Hydraulic oil heating up
Insufficient pump pressure build-up
Sticking loader control valve spool(s)
Hydraulic pump not delivering oil
Oil leakage at hydraulic pump
8-la
8-2
8-1b
8-2
8-1c
8-2
8-1d
8-3
8-1e
8-4
8-1f
8-4
8-2a
8-2b
9-1a
9-1b
9-1c
9-1d
9-1e
9-1f
9-1g
9-1h
12-1a
12-1b
12-1c
12-1d
12-1e
12-1f
12-1g
12-1h
12-1i
12-1j
12-1k
12-1l
8-5
8-5
9-2
9-2
9-3
9-3
9-3
9-4
9-4
9-5
12-2
12-2
12-3
12-4
12-5
12-5
12-6
12-6
12-6
12-7
12-8
12-8
3-4
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