TM-9-2320-361-24-1

2-1/2 TON, 6X6, M44A2 SERIES TRUCKS

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2

AUGUST 2006

TM-9-2320-361-24-1 - Page 141 of 1176

TM 9-2320-361-24-1

0008 00

0008 00-13

MECHANICAL SYSTEMS TROUBLESHOOTING - DIRECT SUPPORT (Contd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

17. ENGINE VIBRATION

ABNORMAL

1. Inspect vibration damper for loose

or vibrating components

(WP 0028 00).

2. Check for crossed fuel injector

lines (WP 0068 00).

NOTE

If, after correctly installing crossed

fuel injector lines, the engine

continues to vibrate excessively,

pistons may be burned within engine

combustion chambers. This condition

cannot be corrected unless affected

piston(s) are replaced.

3. Check engine cylinders

compression readings

(WP 0008 00, table 1,

malfunction 11, test 1).

1. If vibration damper is loose, check

woodruff, key and

crankshaft/vibration damper

mating surfaces for damage.

Replace damaged components

(WP 0028 00).

2. If vibration damper is defective,

replace (WP 0028 00).

If fuel injector lines are crossed,

remove lines and install in correct

locations (WP 0068 00).

If one or more cylinders has an

8-10% or greater compression loss,

replace engine (WP 0046 00).

Table 1. Engine Troubleshooting Procedures (Contd).