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) Step  2. Perform steps 1, 3, 4, and 5a through 5f of paragraph 3-19a. 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, Step  3. Perform steps 1, 3, 4, and 5 of paragraph 3-19a. 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. 3-124