TM-9-2320-346-10

TRUCK, COMMON BRIDGE TRANSPORT (CBT), 8X8 M1977A4 W/WINCH AND M1977A4 W/O WINCH

TECHNICAL MANUAL; OPERATOR'S MANUAL

OCTOBER 2008

TM-9-2320-346-10 - Page 168 of 1184

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 Re-

striction Indica-

tor

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 Con-

trol

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

brakes. Automatically applies parking brake when air pres-

sure drops below 30 psi (2.1 bar).

38

TRAILER AIR

SUPPLY Con-

trol

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

brake system. When TRAILER AIR SUPPLY control is ap-

plied (pushed in), vehicle PARKING BRAKE Control acti-

TM 9-2320-346-10

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