TM-9-2320-342-10-1

TRUCK, WRECKER, 8X8 M984A4

TECHNICAL MANUAL; OPERATOR'S MANUAL

OCTOBER 2008

TM-9-2320-342-10-1 - Page 228 of 1428

Table 1.

Instrument Panel Controls and Indicators. - Continued

Key

Control/

Indicator

Function

INTER AXLE - locks inter-axle differentials in front and rear

tandems.

Center (middle) - off. Vehicle is in normal drive mode.

8x8 - engages transfer case drive to front axles.

36

Air Filter

Restriction

Indicator

Displays condition of air cleaner filter. Shows (red) when filter

becomes clogged. VACUUM INCHES H²O window displays

degree of restriction. Push yellow button on bottom of gauge

to reset.

37

PARKING

BRAKE

Control

Applies (pull out) and releases (push in) vehicle parking

brakes. Automatically applies parking brake when air

pressure drops below 30 psi (2.1 bar).

38

TRAILER AIR

SUPPLY

Control

Supplies air to (push in) and shuts off (pull out) air to trailer

brake system. When TRAILER AIR SUPPLY control is

applied (pushed in), vehicle PARKING BRAKE Control

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