LOSS OF DRIVE IN ALL RANGES

TM 10-3930-638-24&P

3-17. TRANSMISSION TROUBLESHOOTING (cont)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

2. LOSS OF DRIVE IN ALL RANGES (cont)

Perform steps 1, 3, 4, and 5a through 5f of paragraph 3-19a.

Step 2.

a. If pressure gage indication is abnormal, proceed to step 3 below

b. If pressure gage indication is normal, proceed to step 3 below.

Step 3. Perform steps 6 through 8 of paragraph 3-19a.

If lube pressure indication is abnormal, replace charging pump assembly (para 3-19e) and repeat

step 2 above. If pressure gage indication obtained in step 2 above is still abnormal, replace

transmission (para 3-19c) (torque converter oil sealing rings worn and require replacement) and

notify general support maintenance.

3. LOSS OF POWER AND/OR LOSS OF DRIVE IN ANY ONE RANGE

Step 1. Perform steps 1,3,4, and 5a through 5f of paragraph 3-19a.

a. If pressure gage indication is abnormal, proceed to step 2 below

b. If pressure gage indication is normal, proceed to step 3 below.

Step 2.

Perform steps 6 through 8 of paragraph 3-19a.

If lube pressure indication is abnormal, replace charging pump assembly (para 3-19e) and repeat

step 1 above. If pressure gage indication obtained in step 1 is still abnormal, replace transmission

(para 3-19c) (torque converter oil sealing rings worn and require replacement) and notify general

support maintenance,

Perform steps 1, 3, 4, and 5 of paragraph 3-19a.

Step 3.

a. [f pressure indications normal in F (forward) but abnormal in R (reverse), replace transmission

(para 3-19c) (reverse and second clutch group require repair) and notify general support

maintenance.

b. If pressure indications normal in R (reverse) but abnormal in F (forward), replace transmission

(para 3-19c) (forward clutch group requires repair) and notify general support maintenance.

c. If pressure indication in any one position of speed selector varies more than 5 PSI from other

indications, replace transmission (para 3-19c) (clutch group associated with speed selector

position in which pressure indication varied more than 5 PSI requires repair) and notify general

support maintenance.