TM 9-2320-387-24-2
Table 14-1. Mechanical Troubleshooting (Cont’d).
MALFUNCllON
TEST OR INSPECllON
Step 6.
Check direct clutch piston, plates, and release springs for damage or incorrect assembly.
Repair direct clutch (para. 28-10) if damaged.
step 7.
Check transmission case passages for leaks. Replace transmission (para. 19-3) if case is
damaged.
END OF TESTING!
22. 2-3 SHIFT FIRM OR ROUGH
step 1.
If oil pressure in @) (overdrive) at 1,000 r-pm is normal, proceed to step 2. If oil pressure
is high, proceed to step 5.
step 2.
Check front accumulator for damaged piston, rings, and broken or missing spring. Check
valve to accumulator feed for obstructions. Replace control valve (para. 28-17) if damaged.
WARNING
Compressed air used for cleaning purposes will not exceed 30 psi
(207 kPa). Use only with effective chip guarding and personnel
protective equipment (goggles, shield, gloves, etc.).
step 3.
Air-check direct clutch piston for leak to outer area of clutch piston. Check center piston
seal for damage. Repair direct clutch (para. 28-10) if damaged.
step 4.
Check center support and second oil ring for damage. Repair center support (para. 28-9)
if damaged.
step 5.
Perform steps 6 and 7 of malfunction 19.
END OF TESTING!
23. NO 3-4 UPSHIFT OR DEWED UPSHIFT
NOTE
If malfunction only occurs at or near full throttle, check engine
timing for proper adjustment and check exhaust system for
restrictions.
step 1.
Check control valve for a stuck 2-3 valve and misaligned or damaged gaskets. Replace
control valve (chapter 28) if damaged.
step 2.
Check direct clutch for damage or burned clutch plates. Repair direct clutch (para. 28-10)
if damaged.
END OF TESTING!
24. 3-4 SHIFT SOFT OR SUPS
step 1.
Step 2.
Step 3.
Step 4.
If oil pressure in @
(overdrive) at 1,000 rpm is low, proceed to step 2. If oil pressure is
normal, proceed to step 4.
Perform steps 3 through 8 of malfunction 18.
Perform steps 6 and 7 of malfunction 19.
Check front servo for broken or missing spring and leak at servo pin. Repair front servo
(para. 28-15) if damaged.
14-11
