TM-9-2350-256-10

RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1

OPERATOR'S MANUAL

OCTOBER 2014

TM-9-2350-256-10 - Page 224 of 796

STARTING APU

1.

Turn FUEL SHUTOFF switch (Figure 3, Item 1) to ON position. LOW OIL PRESS light (Figure 3, Item 3) will

come on and stay on until engine runs.

2.

PREHEAT switch (Figure 3, Item 2) is kept on until engine starts.

NOTE

Starting APU in cold weather is the same as starting under normal conditions, except

PREHEAT switch is held in ON position for 2 minutes before attempting to start.

3.

Press and hold PREHEAT switch (Figure 3, Item 2) in ON position for 20 seconds for temperatures above

55°F (13°C), or for 2 minutes for temperatures below 55°F (13°C). While holding PREHEAT switch, move

START switch (Figure 3, Item 4) to ON, and hold until engine starts. If engine doesn't start in 1 minute,

release START switch and keep PREHEAT switch in ON position for another 20 seconds, or 1 minute in

temperatures below 55°F (13°C). Try starting APU again. If it still doesn’t start, troubleshoot (WP 0081).

4.

When engine starts, release two switches (Figure 3, Items 2 and 4).

Figure 3.

APU Control Box.

CAUTION

If LOW OIL PRESSURE light stays on after engine starts or comes on while engine is

running, turn FUEL SHUTOFF switch to OFF position. Failure to comply may result in

damage to equipment.

5.

Let APU warm up for 3 minutes before turning on APU GEN switch or operating the auxiliary

hydraulic system.

TM 9-2350-256-10

0042

0042-4