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 209 of 481

TM 9-2320-272-10

2-108

Change 2

CAUTION

Do not shut down engine if engine coolant temperature gauge

reads above 200°F (93°C).

f.

Let engine idle for five minutes if engine coolant temperature gauge (4) reads

above 195°F (91°C).

CAUTION

Shut down procedure should be strictly adhered to, otherwise

damage to ABS ECU may occur if vehicle is so equipped and may

also induce faults and ABS valves will not function.

g.

Turn vehicle light switch (1) and ignition switch (3) to OFF position. Wait for

engine to completely stop before turning battery switch (2) to OFF position.

CAUTION

Pull out EMERGENCY ENGINE STOP control if engine

continues to run after ignition and battery switches are in OFF

position. Do not attempt to restart M939/A1 series vehicle engine

until unit maintenance has reset fuel cutoff valve.

h.

Perform AFTER operation checks and services (table 2-3).

a.

Position right sides of both vehicles together.

b.

Stop slaving vehicle engine.

c.

Pull covers (6) from slave receptacles (7) of disabled vehicle and slaving

vehicle. Receptacle (7) is located below grab handle (5).

CAUTION

Always connect slave cable to disabled vehicle first. Damage to

batteries or cable may result from improperly connecting cables.

d.

Connect slaving cable (8) between disabled vehicle and slaving vehicle.

2-17. USING SLAVE RECEPTACLE TO START ENGINE

2-16. STOPPING THE VEHICLE AND ENGINE (Contd)