TM-9-2320-283-20-1

TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3

DECEMBER 1983

TM-9-2320-283-20-1 - Page 419 of 926

TM 9-2320-283-20-1

TROUBLESHOOTING.

2-11. TROUBLESHOOTING PROCEDURES (Continued)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

95.

ROUGH SHIFTING.

Step 1.

Check shifter control cable adjustment.

Adjust shifter control cable (para 3-138).

Step 2.

Check modulator control adjustment.

Adjust modulator control (para 3-140).

Step 3.

Check shifter control.

a.

Replace shifter control (para 3-137).

b.

Notify direct support maintenance.

96.

TRANSMISSION OIL DIRTY, FOAMY, AND/OR MILKY.

NOTE

•

Dirt and grit in transmission oil indicates oil needs changing.

•

Foaminess indicates contamination of oil by air.

•

Milkiness indicates contamination of oil by coolant.

Step 1.

Inspect oil for dirt and grit.

a.

Service transmission (para 3-135).

b.

Tighten all fittings (para 3-141).

c.

Notify direct support maintenance.

Step 2.

Inspect for excessive foaminess.

a.

Oil low; add oil (para 3-135).

b.

Replace transmission oil filter (para 3-135).

c.

Notify direct support maintenance.

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