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 262 of 481

TM 9-2320-272-10

Change 2

2-156.5

2-26.1. OPERATION OF M931/A1/A2 W/O ABS AND M932/A1/A2

W/O ABS TRACTORS WHEN TOWING M131 SERIES,

M967/A1, M969/A1/A2, AND M970/A1 5,000-GALLON

FUEL TANKERS (Contd)

c. Speed Limits.

WARNING

• Do not drive faster than road or weather conditions permit.

Maximum safe speed limit for normal highway driving is

55 mph (88 km/h).

• Stopping can be adversely affected by poor road/weather

conditions. Drive at a slow, safe speed in poor conditions to avoid

excessive braking. Failure to comply may result in damage to

equipment or serious injury or death to personnel.

1.

At unit-level maintenance, all operators must adhere to the following

maximum driving speeds:

Prepared surfaces (paved, gravel, or dirt roads) . . . .40 mph (64 km/h)

Cross-country . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 mph (56 km/h)

Sand, snow, mud . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 mph (40 km/h)

Icy conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 mph (19 km/h)

2.

When necessary to slow down vehicle to maintain posted safe speed limit,

perform the following steps:

(a)

Apply brakes just hard enought to feel a definite slowdown of vehicle.

This brake application should last for roughly three seconds.

(b)

When speed has been reduced to approximately 5 pmh (8 km/h) below

posted speed limit, release brakes.