TM-9-2815-205-24

6V53/6V53T ENGINES, DIESEL WITH CONTAINERS; MODEL 5063-5299, MODEL 5063-5392, MODEL 5063-5393 AND MODEL 5063-539L

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE

FEBRUARY 2013

TM-9-2815-205-24 - Page 486 of 856

ADJUSTMENT

EXHAUST VALVE CLEARANCE

1.

Place speed control lever (Figure 1, Item 2) in idle speed position and secure stop lever (Figure 1, Item 1) in

stop position.

CAUTION

Do not rotate crankshaft in counterclockwise direction using crankshaft bolt. Crankshaft

bolt can loosen and serious engine damage may result if crankshaft bolt is not securely

tightened to crankshaft.

2.

Using crankshaft end bolt, rotate crankshaft clockwise until injector follower (Figure 1, Item 3) is fully

depressed on cylinder to be adjusted.

3.

Hold push rod (Figure 1, Item 8) in position and loosen push rod locknut (Figure 1, Item 7).

NOTE

Normal ambient temperature (cold engine) is 100° F (38° C) or less.

4.

Place 0.026 inch (0.660 mm) thickness gage (cold engine) between end of one exhaust valve stem

(Figure 1, Item 5) and rocker arm bridge (Figure 1, Item 4).

5.

Turn push rod (Figure 1, Item 8) in or out of clevis (Figure 1, Item 6) until a smooth pull is obtained on

thickness gage.

6.

Remove thickness gage. Hold push rod (Figure 1, Item 8) and tighten locknut (Figure 1, Item 7). Lightly tap

rocker arm at bridge (Figure 1, Item 4) with wrench to release friction.

STOP

POSITION

IDLE

POSITION

2

3

4

5

6

7

8

1

MAINT_215

Figure 1.

Adjust Valve Clearance.

TM 9-2815-205-24

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