TM 9-2320-289-34
Table 2-1, Mechanical Troubleshooting (Con’t)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
TRANSMISSION
51. EXCESSIVE OIL LOSS
WARNING
Dry cleaning solvent P-D-680 is toxic and flammable. Always wear
protective goggles and gloves and us. only in a well-ventilated l rea. Avoid
contact with skin, l yes, and clothes l nd DO NOT breathe vapors. DO NOT
us. near open flame or l xcesslvo heat. The solvent’s flash point Is
100°F-1 38°F (38°C-S9°C). If you became dizzy while using cleaning
solvent, immediately get fresh air and medical help. if solvent contacts
eyes, immediately wash your eyes with water and get medical aid.
Step 1.
Step 2.
Step 3.
Thoroughly clean exterior of transmission and transfer case with dry cleaning
solvent (Item 23, Appendix B), and allow to air dry. Operate truck for about 10
minutes, then shut off. Inspect transmission case and transfer case for leakage.
If hydraulic fluid is leaking from anywhere except front of transmission,
inspect components for damage. Replace any damaged components,
gaskets, or seals.
If hydraulic fluid is leaking from front of transmission, perform step 2.
Remove torque converter cover. Thoroughly clean and dry torque converter and
transmission oil pump. Chock rear wheels. Raise front of truck and support on jack
stands. Have assistant start engine in “ P“ (Park). Observe torque converter and
transmission oil pump for area of leakage.
Replace any leaking components.
Check for loose transmission case-to-transfer case adapter bolts.
Tighten bolts to 30 Ib.-ft. (41 N.m) if loose.
NOTE
Thor. is no approved way to chock transmission oil filter for blockage or
restrictions.
Step 4.
Remove transmission oil filter (see TM 9-2320-289-20) and check for water in
hydraulic fluid. Inspect intake pipe and
“O” ring for improper positioning and
damage.
Replace hydraulic fluid and transmission oil filter if any water is present.
Replace intake pipe and “ O“ ring if damaged, Replace transmission oil filter if
blockage or restrictions are suspected.
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