TM 9-2320-386-10 3-22 Change 1 3-7. CHECKING FLUID LEVELS (Contd) c. Transmission Oil Level. WARNING Hearing protection is required when maintaining vehicle with engine running. CAUTION • Do not permit dirt, dust, or grit to enter transmission filler tube. Thoroughly clean access door, dipstick handle, and end of filler tube. Serious internal transmission damage may result if transmission is contaminated. • Do not check transmission oil level if transmission oil temperature gauge indicates over 300°F (149°C). Stop engine engine and allow transmission to cool. NOTE • Transmission oil level is checked daily with engine running. Transmission oil dipstick is located under the access door on the floor of cab in front of companion seat. • Ensure parking brake is applied and transmission is in neutral position before starting engine. (1) Start engine (para. 2-12). (2) Open access door (2) and remove dipstick (1) from filler tube (3). (3) Wipe dipstick (1) clean and return to filler tube (3). (4) Withdraw dipstick (1) slowly to prevent false reading. (5) If transmission oil temperature is below 160°F (71°C), oil level should be between COLD RUN level marks on dipstick (1). (6) If transmission oil temperature is 160°-300°F (71°-149°C), oil level should be between HOT RUN level marks on dipstick (1). (7) Return dipstick (1) to filler tube (3) and recheck oil level. (8) If oil level is not within limits, add oil (table 2-2) or drain oil as necessary, notify unit maintenance. 1 2 3 1