TM-9-2320-272-10

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; OPERATOR'S MANUAL

SEPTEMBER 2004

CHANGE 2

TM-9-2320-272-10 - Page 380 of 481

TM 9-2320-272-10

3-31

3-10. TRANSMISSION OIL LEVEL (Contd)

b. Check Oil Level.

.

WARNING

.

Do not check transmission oil level if transmission oil temper-

ature gauge indicates temperature over 220°F (104°C). Stop

engine and allow transmission to cool. Hot oil may result in injury

to personnel.

(1)

Open access door (4) on cab floor in M939/A1 series vehicles or open hood in

M939A2 series vehicles to access dipstick (3). Clean around end of filler tube (5) before

removing dipstick (3).

.

WARNING

.

Hot turbocharger and exhaust manifold can cause injury to

personnel.

(2)

Turn dipstick (3) handle counterclockwise and pull out dipstick (3) on

M939/A1 series vehicles. On M939A2 series vehicles, pull dipstick (3) straight out.

(3)

Wipe clean and insert dipstick (3) in filler tube (5).

(4)

On M939/A1 series vehicles, withdraw dipstick (3) slowly to prevent a

false reading. If transmission oil temperature gauge (8) on instrument panel reads

180°F (82°C) or below, level on dipstick (3) should show between marks designated

for normal run (2).

(5)

On M939A2 series vehicles, slowly pull dipstick (3) out of filler tube (5).

Level on dipstick (3) should be between ADD mark (7) and FULL mark (6).

CAUTION

Overfilling transmission will result in internal transmission

damage.

(6)

If transmission oil level is low, add oil through filler tube (5)

(LO 9-2320-272-12). Return dipstick (3) to filler tube (5), tighten dipstick handle

(M939/A1 series vehicles), and wipe up any oil spilled.