TM-9-2320-344-10

TRUCK, CARGO, GUIDED MISSILE TRANSPORTER (GMT), 8X8, M985A4GMT

TECHNICAL MANUAL; OPERATOR'S MANUAL

OCTOBER 2008

TM-9-2320-344-10 - Page 331 of 1012

6.

With engine at idle (625-725 rpm), check that engine oil pressure gauge (5) reads 15-88

psi (1.03-6.07 bar).

TRAILER

AIR SUP LY

PARKING

BRAKE

AIR BRAKE

8X8

M

M

7

11

8

6

5

10

9

Figure 2.

7.

Press throttle pedal (6) until tachometer (7) reads 800-1000 rpm.

8.

Run engine at 800-1000 rpm for about 5 minutes.

CAUTION

If FRONT and REAR air pressure gauges do not read 60 to 120 psi (4 to

8 bar) after warm-up, shut off engine (WP 0053) and notify field level

maintenance. Failure to comply may result in damage to equipment.

9.

Check that FRONT (8) and REAR (9) air pressure gauges read 60 to 120 psi (4 to 8

bar). Brake system failure (LOW AIR) indicator (10) will illuminate and buzzer may

sound until both gauges reach 60 to 75 psi (4 to 5 bar).

10. Check that fuel gauge (11) shows enough fuel to complete mission.

NOTE

Engine coolant temperature gauge may not show reading at engine idle.

11. Check that engine coolant temperature gauge (12) does not read over 219°F (104°C).

TM 9-2320-344-10

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