TM 10-3930-641-34-1
TORQUE CONVERTER TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. TORQUE CONVERTER OVERHEATS
Needle of torque converter oil temperature gage is in red area.
Step 1. Check oil level in output transfer gear case.
Add oil to proper level. (See LO 10-3930-641-12.)
Step 2. Check coolant level in engine radiator.
Fill to proper level. (See LO 10-3930-641-12.)
Step 3. Check oil cooler for restrictions.
a.
Clean oil cooler.
b.
Repair or replace oil cooler. (See page 4-197.)
Step 4. See if vehicle has been operated continuously at overload capacity.
Tell operator not to exceed rated load capacity.
Step 5. Test temperature gage.
Replace temperature gage. (See TM 10-3930-641-20.)
Step 6. Check oil pump.
Repair or replace. (See page 4-179.)
2. CONVERTER OUTLET RELIEF VALVE TAP SHOWS HIGH PRESSURE
Check adjustment of converter outlet relief valve.
Adjust/repair. (See page 4-225.)
2-41
