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 TM 5-2420-224-20-1
Troubleshooting Symptom Index (Cont)
Troubleshooting
Malfunction
Procedure
Number
Malfunction
Page
TRANSMISSION
79. TRANSMISSION WILL NOT OPERATE IN ANY FORWARD OR REVERSE
GEAR . . . . . . . . . . . . . . . . . . . . . . . . . .
...
80. TRANSMISSlON SLIPS IN ALL RANGES . . . . . . . . . . . . . . . . . . . . .
.....
81. PTO WILL NOT ENGAGE . . . . . . . . . . . . . . . . . . . . . . . . . .
.....
82. ALL WHEEL DRIVE/DIFFERENTIAL LOCK WILL NOT ENGAGE/DISENGAGE . .
.....
BRAKES AND AIR SYSTEM
83. BRAKES FAIL OR BRAKE PEDAL SPONGY . . . . . . . . . . . . . . . . . . . . .
.
84. BRAKING UNEVEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
85. BRAKES OVERHEAT . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
86. BRAKES SQUEAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
87. BRAKE INDICATOR LIGHT LIGHTS . . . . . . . . . . . . . . . .
.
88. TRAILER BRAKE SYSTEM FAILS OR BRAKING WEAK . . . . . . . . . . . . . . . . . .
.
89. AIR SYSTEM HAS NO EFFECT ON BRAKING (HARD BRAKING) . . . . . . . .
.
STEERING
90. STEERING WHEEL HARD TO MOVE FULL RIGHT AND FULL LEFT
....
.
..
91. STEERING WHEEL HAS TOO MUCH PLAY . . . . . . .
...
.
..
9 2 . STEERING WHEEL VIBRATES AND/OR VEHICLE WANDERS .
....
.
..
93. POWER STEERING PUMP NOISY . . . . . . . . . . . . . . . . . . . . . . . .
.....
.
...
94. POWER STEERING SYSTEM LOSING OIL .. . . . . . . . . . . . .
....
.
..
SUSPENSION
95. CLUNKING OR CREAKING ON TURNS OR STOPS . .
................
96. HYDRAULIC SUSPENSION LOCKOUT SYSTEM WILL
NOT ENGAGE (HMMH) . .
97. ONE SIDE OF HYDRAULIC SUSPENSION LOCKOUT
WILL NOT ENGAGE
(HMMH) . . . . . . . . . . . . . . . . . . . . . . . . .
.................
HYDRAULIC SYSTEM
98. HYDRAULIC PUMP NOISY . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . .
9 9 . HYDRAULIC OIL FOAMY (FRONT LOADER/FORKLIFT, BACKHOE/CRANE,
AND HYDRAULIC TOOLS OPERATE ERRATICALLY) . . . . . . . . . . . . . . .
100. HYDRAULIC OIL OVERHEATS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FORKLIFT (HMMH)
101.
FORKLIFT WILL NOT MOVE (EMPTY) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
102.
FORKLIFT WILL NOT LIFT LOAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
103.
LIFT CYLINDER DRIFTS DOWN . . . . . . . . . . . . . . . . . . . . . . . . . .
104.
MASTER PLUNGER DRIFTS UP WHEN LOAD LIFTED, THEN STOPS . . . . . . . . . . . .
105.
TILT CYLINDER DRIFTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
106.
ROTATOR CYLINDER RIFTS. . . . . . . . . . . . . . . . . . . . . .
107.
FORKLIFT TILTS WITH ROTATE BUTTON DEPRESSED . . . . . . . . . . . . . . .
3-67
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