TM-9-2320-273-10

TRUCK, TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; OPERATOR’S MANUAL

DECEMBER 2012

TM-9-2320-273-10 - Page 128 of 452

Table 22. Transmission Ratio Selector, M915 through M920

.

1

GEAR

RANGE

DIAL

STRIP HEATER

INDICATOR LIGHT

Figure 22. Transmission Ratio Selector, M915 through M920.

Key

Control/Indicator

Function

1.

Transmission Ratio

Selector (M915

through M920)

CAUTION

The transmission clutch disengages at engine speeds

of 1,100 rpm or less causing loss of braking

efficiency of the engine as a brake. This condition

can damage the transmission if held in low rpm

range over 12 seconds. Down shifting within this

time is mandatory.

The drivelines must be disconnected when towing

the truck, otherwise the transmission will be

damaged.

Use the service brakes to hold truck while stopped

on a grade. Do not use the transmission to hold the

truck as damage may result.

Do not use the inhibitor override while the truck is

in motion.

TM 9-2320-273-10

0005

0005-30