TM-9-2320-273-34
TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1980
TM-9-2320-273-34 - Page 24 of 801
TM 9-2320-273-34
Table 2-3. Transmission and Shift Controls Troubleshooting Procedures (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 5.
Remove, inspect, and repair or replace front clutch (para 7-17).
Step 6.
Remove, inspect, and repair or replace ratio selector (para 7-2).
4.
ENGINE RPM INCREASES BUT TRUCK SPEED DOES NOT.
Step 1.
Check pressure regulator output clutch pressure (para 7-8a).
a.
Correct any pressures that are not within tolerances.
b.
If pressures are correct, go to step 2.
Step 2.
Remove, inspect, and repair or replace rear clutch assembly (para 7-17).
Step 3.
Remove, inspect and repair or replace input clutch assembly.
Step 4.
Replace transmission control (para 7-17).
5.
TRANSMISSION OIL LEVEL DECREASES.
Step 1.
Check transmission case breather (4, fig. 7-47).
a.
If clogged, clean or replace.
b.
If open, go to step 2.
Step 2.
Check for leaks at output shaft seal (para 7-11).
Replace.
Step 3.
Check for leaks at transmission subassemblies mating surfaces.
Disassemble and assemble transmission to correct any leaks (para 7-17).
Step 4.
Check engine crankshaft rear seal.
Replace. (Refer to TM 9-281 5-222-34& P).
6.
TRANSMISSION OIL LEVEL INCREASES.
Engine crankshaft rear seal leaking. (Refer to TM 9-281 5-222-34& P.)
2-8
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