INITIAL SETUP:

Maintenance Level Operator

0012 00

1. Make sure driver's hatch door will lock in opened and closed positions. Lock driver's hatch door in desired position.

• Lock opened. Engage hold-open lock (1) with latching pin positioned over flat portion of hatch cover locking tab. Remove quick-release pin (2) from stowage position, and insert pin (2) through horizontal bracket (3) and over flat portion of hatch door locking tab.

• Lock closed. With hatch door closed, turn locking handle (5) to the rear to lock external hatch door latch (4).

• Security lock. To prevent entry from outside, push security latch handle (6) forward.

2. Adjust driver's seat as necessary.

• Adjusting up and down. Hold seat down and pull up on adjusting lever (7). With lever raised, lift or press seat to obtain correct height. Release adjusting lever to lock in position.

• Adjusting forward and backward. Pull up on adjusting tab (8) and move seat forward or backward. Release adjusting tab to lock in position.

• Backrest positioning. Press pawl (9) and rotate backrest up and back. When backrest is positioned vertically, reposition pawl to lock backrest.

• Adjusting backrest height. Remove adjusting pin (10) and lower or raise backrest. When desired height is obtained, install pin in adjusting holes.

3. Adjust steering wheel by pressing sleeve bearing (11) forward and rotating steering wheel up or down. Raise wheel if driving with hatch open; lower wheel when driving with hatch closed. When correct adjustment is obtained, release sleeve bearing to lock position.

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4. If driving in raised position, clip portable instrument panel (12) into bracket (on top of hull just left of driver's hatch door).

NOTE

• Use the following procedure for starting engine in normal-temperature climates (+40°F, or 4.4°C). Refer to cold-weather starting procedures (p. 0037 00-1) when temperature is below +40°F (4.4°C), or if engine will not start in moderately cold climates.

• Before applying the service brake pedal while on steep slopes (greater than 20 percent), adjust the driver's seat so you can apply maximum leverage to the brake pedal.

5. Set parking brake by pressing on service brake pedal (15) and pulling out and down on parking BRAKE LOCK handle (13). Parking brake will be set when handle is released in this position. If stopping on a steep slope, press on service brake pedal (15), pull out and down on parking BRAKE LOCK handle (13), release, and press on service brake pedal (15) again.

6. Shift transmission selector lever (14) to N (neutral), and make sure it locks into position.

STARTING MAIN ENGINE (continued) 0012 00

CAUTION

Before starting engine, you should check for hydrostatic lock.

Intermittently actuate STARTER switch (with MASTER switch set to ON and FUEL SHUT OFF handle pulled out). The following symptoms indicate hydrostatic lock:

• Engine starts to turn over with starter, then stops.

• Starter sounds as if straining when engine is cranking.

• Engine seems to bind.

If you suspect hydrostatic lock, stop cranking immediately and notify Unit maintenance.

7. Turn MASTER switch (17) to ON. Indicator lamp (16) and MASTER power light (18) should light with MASTER switch (17) set to ON.

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8. Pull FUEL SHUT OFF handle (19) to OFF position before checking for hydrostatic lock.

9. C h e c k f o r h y d r o s t a t i c l o c k b y intermittently activating STARTER switch (22) (with MASTER switch [17] set to ON and FUEL SHUT OFF handle [19] pulled out).

10. Release FUEL SHUT OFF handle (19).

11. Place throttle control lever (20) in idle position.

12. If fuel filters have been drained since last start, hold FUEL PRIME switch (21) to ON for one minute, then release switch.

WARNING

Protect your hearing. Due to high-intensity noise, hearing protection is required when operating this vehicle.

CAUTION

Do not operate starter con-tinuously for over 30 seconds.

If engine does not start, allow one-minute cool-off period before engaging starter again.

Notify Unit maintenance if engine fails to start after fourth try.

STARTING MAIN ENGINE (continued) 0012 00

NOTE

An electrical relay prevents driver from operating starter continuously for more than 30 seconds. If tactical situation dictates, commander can use combat starter override switch (p. 0044 00-8) to allow continuous cranking of starter for more than 30 seconds.

13. Push and hold engine STARTER switch (22) to START until engine starts.

NOTE

If you notice a shrill whine (above normal turbine whine), rubbing, unusual vibrations, and/or sudden increase in exhaust smoke, shut off engine and notify Unit maintenance.

14. Set throttle control lever (20) so that tachometer (24) reads 550 to 600 rpm. While engine is idling at this speed, watch ENGINE OIL PRESSURE gage (23). If ENGINE OIL PRESSURE gage (23) does not register 5 to 30 psi within 15 seconds of start, immediately pull FUEL SHUT OFF handle (19) to stop engine and notify Unit maintenance.

15. Idle engine for about two minutes; then move throttle control lever (20) to set engine speed at 1000 rpm (fast idle) on tachometer (24). Continue to warm engine until ENGINE WATER TEMP gage (25) registers at least 170°F.

16. Perform portable instrument panel checkout procedure (p. 0013 00-1) during engine warmup.

END OF WORK PACKAGE

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Frequently check the portable instrument panel gages and indicators on this page and pages 0013 00-2 and 0013 00-3 to make sure vehicle powerpack continues to operate correctly. If the normal indications are not observed during this check, refer to the troubleshooting procedures in Chapter 3.

1. Instrument panel lights (1) should be set to OFF at this time. Turn on lights, if desired, to illuminate portable instrument panel using light switch assembly on main instrument panel.

0013 00

CAUTION

If engine oil pressure is below 30 psi at 1000 rpm, check oil level.

2. ENGINE OIL PRESSURE gage (2) should indicate between 30 and 50 psi at 1000 rpm and between 50 and 70 psi at 2100 rpm. Maximum allowable pressure is 70 psi.

OPERATOR'S MANUAL

CARRIER, AMMUNITION, TRACKED, M992A2