TM 10-3930-641-34-1
TRANSMISSION TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. TRANSMISSION WILL NOT SHIFT FROM ONE SPEED TO ANOTHER SPEED
Inspect speed control linkage for incorrect adjustment and broken or defective parts.
Adjust linkage. (See TM 10-3930-641-20.)
Replace defective parts and then adjust linkage. (See TM 10-3930-641-20.)
7. TRANSMISSION WILL NOT SHIFT FROM ONE DIRECTION TO ANOTHER DIRECTION
Inspect direction control linkage for incorrect adjustment and broken or defective parts.
Adjust linkage. (See TM 10-3930-641-20.)
Replace defective parts and then adjust linkage. (See TM 10-3930-641-20.)
8. TRANSMISSION OVERHEATS
Step 1. Inspect oil level.
Add oil. (See LO 10-3930-641-12.)
Inspect system to determine where loss occurred and repair or replace as necessary.
Step 2. Inspect magnetic strainer in output transfer gear case.
Clean. (See TM 10-3930-641-20.)
Step 3. Inspect oil cooler.
Clean or repair core as necessary. (See page 7-22.)
Step 4. Inspect oil pump for worn or damaged parts.
Repair oil pump. (See page 4-188.)
Step 5. Inspect all lines and fittings for restrictions.
Clean lines and fittings. Remove kinks and restrictions from all oil lines.
Step 6. Test operation of sequence and pressure control valve. (See page 4-237.)
Add or remove spacers till valve functions correctly. Converter inlet pressure should be 130 psi.
(See pages 4-237, 4-205.)
Step 7. Determine if problem is that clutches do not completely disengage.
Test sequence and pressure control valve. (See page 4-237.) Sequence valve should open at 265 psi to 275 psi.
Add or remove spacers till pressure is correct. (See pages 4-237, 4-205.)
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