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 111 of 452

Table 10. Inter-Axle Differential Control

.

1

1

M916 THROUGH M920

M915 and M915A1

Figure 10. Inter-Axle Differential Control.

Key

Control/Indicator

Function

1.

INTER-AXLE

DIFFERENTIAL

Control

CAUTION

Never move the inter-axle differential control to the

LOCK position while tractor is moving or any

wheel is spinning or damage to equipment will

result.

This control is a valve for operating the air actuated

inter-axle differential lockup on all models. This

control engages the front driving axle on the M916

through M920.

M915 and M915A1

To engage the differential lock, bring tractor to a

complete stop and move control lever to LOCK

position. The DIFF LOCK OUT indicator will

illuminate red when control lever is in LOCK

position. To disengage the differential lock, move

the control lever to UNLOCK position while the

tractor is moving.

M916 through M920

To engage the differential lock and engage the front

driving axle, bring tractor to a complete stop and

move control lever to LOCK position. The DIFF

LOCK OUT indicator will illuminate red when

control lever is in LOCK position. To disengage the

differential lock, let up on accelerator and move the

control lever to UNLOCK position temporarily, then

place switch in the center (OFF) position for normal

driving while the tractor is moving.

TM 9-2320-273-10

0005

0005-13