T R O U B L E S H O O T I N G
PROBLEM: Machine moves when selection lever is in
NEUTRAL.
PROBABLE CAUSE:
1. Adjustment of
correct.
direction control linkage not
2. Direction clutch engaged.
PROBLEM: Low clutch pressures.
PROBABLE CAUSE:
1. Clutch seal rings have damage.
2. Operation of modulation relief valve not correct.
PROBLEM: Transmission does not operate in any FOR-
WARD speeds.
PROBABLE CAUSE:
1. No. 2 clutch not engaged (slips) because of:
a. Low oil pressure.
b. Discs and plates have too much wear.
c. Broken components.
2. Adjustment of direction control linkage not
correct.
PROBLEM: Transmission does not operate in any RE-
VERSE speed.
PROBABLE CAUSE:
1. No. 1 clutch not engaged (slips) because of:
a. Low oil pressure.
b. Discs and plates have too much wear.
c. Broken components.
2. Adjustment of direction control linkage not
correct.
PROBLEM: Transmission does not operate in FIRST
speed FORWARD or REVERSE.
PROBABLE CAUSE:
1. No. 6 clutch not engaged (slips) because of:
a. Low oil pressure.
b. Discs and plates have too much wear.
c. Broken components.
2. Adjustment of speed control linkage not correct.
TM 5-3805-258-24-1
T E S T I N G
A N D
A D J U S T I N G
PROBLEM: Transmission does not operate in SECOND
speed FORWARD or REVERSE.
PROBABLE CAUSE:
1. No. 5 clutch not engaged (slips) because of:
a. Low oil pressure.
b. Discs and plates have too much wear.
c. Broken components.
2. Adjustment of speed control linkage not correct.
PROBLEM: Transmission does not operate in THIRD
speed FORWARD or REVERSE.
PROBABLE CAUSE:
1 No. 4 clutch not engaged (slips) because of:
a. Low oil pressure.
b. Discs and plates have too much wear.
c. Broken components.
2. Adjustment of speed control linkage not correct.
PROBLEM: Transmission does not operate in FOURTH
speed FORWARD or REVERSE.
PROBABLE CAUSE:
1. No. 3 clutch not engaged (slips) because of:
a. Low oil pressure.
b. Discs and plates have too much wear.
c. Broken components.
2. Adjustment of speed control linkage not correct.
PROBLEM: High pressure at pressure taps for P1 (speed)
and P2 (direction) clutches in all speeds and
directions.
PROBABLE CAUSE:
1. Operation of modulation relief valve not correct.
PROBLEM: High pressure at P2 (direction) clutch pres-
sure tap in both directions.
PROBABLE CAUSE:
1. Operation of pressure differential valve not correct.
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