TM-9-2350-277-20-1

CARRIER M113A3, M577A3, M1059A3, M1064A3, M1068A3 AND M58

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL VOLUME 1 OF 6

TM-9-2350-277-20-1 - Page 197 of 855

TM 9-2350-277-20-1

ENGINE RUNS ROUGH, STALLS, OR DOESN’T PUT OUT FULL POWER — Continued

0024 00

4Y

1.

Start engine and run to normal operating temperature.

See TM 9-2350-277-10.

2.

Shift transmission into position 1. See TM 9-2350-277-10.

3.

Perform MSD/ICE test 30 turbo outlet pressure (WP 0122 00)

with accelerator and brake pedals fully depressed.

4.

Observe MSD and tachometer readings.

5.

Repeat MSD/ICE test 30 with same tachometer reading,

but with transmission selector in SL.

6.

Is first MSD reading at least 10 psi higher than second MSD

reading?

4YN

GO TO

CY

(PAGE 0024 00-4)

5Y

1.

Perform MSD/ICE test 32 air box pressure (WP 0123 00) with

transmission selector in SL and engine at idle.

2.

Repeat MSD/ICE test 32 for engine speeds of 1000

and 2000 RPM.

3.

Does MSD give higher readings for higher RPM?

5YN

1.

Low air box pressure. Beyond unit

maintenance repair.

2.

Notify supervisor.

6Y

1.

Faulty engine governor. Beyond unit maintenance repair.

2.

Notify supervisor.

002400-2

Change 5