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TM 5-4210-220-34
Table 3-1 GENERAL SUPPORT TROUBLESHOOTING - Continued
MALFUNCTION
TEST AND INSPECTION
CORRECTIVE ACTION
1e
AUTOMATIC SHIFTS OCCUR AT TOO LOW SPEED
Step 1.
Check governor valve for sticking.
Clean or replace valve if stuck.
Step 2.
Check if shift points properly adjustment.
Adjust shift points.
Step 3.
Check if shift signal valve spring adjustment is too loose.
Tighten spring adjusting ring.
Step 4.
Check if modulator valve is stuck.
Clean or replace modulator valve.
Step 5.
Check if governor spring is weak.
Replace governor.
1f
TRANSMISSION OIL PRESSURE LOW
Step 1.
Check lubrication valve spring.
Replace valve spring.
Step 2.
Check valve body mounting bolts, lubrication valve seat and spring, seal ring at oil intake pipe, main
pressure regulator valve spring weak, leaks in valve body, trimmer, relay valves stuck or worn oil pump.
Overhaul transmission
1g
OIL LEAKING INTO CONVERTER HOUSING
Step 1.
Check converter pump hub seal for wear.
Replace seal.
Step 2.
Check seal area on converter pump hub for wear.
Replace pump hub.
Step 3.
Check engine rear seal.
Replace seal.
3-4
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