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 547 of 856

REPAIR OR REPLACEMENT - Continued

(5)

Apply a light coat of Prussian blue paste to valve seat.

(6)

Lower stem of valve in valve guide and bounce valve on seat. Do not rotate valve.

(7)

Remove valve and observe area of contact on valve face. Most desirable area of contact is at

center of valve face.

6.

Exhaust valves and springs inspection and replacement procedures:

a.

Valve stems must be free from scratches or scuff marks. Valve faces must be free of ridges, cracks,

or pitting.

b.

Replace valves if warped, excessively worn, or pitted.

c.

Using spring tester (Figure 14, Item 77), measure load required to compress valve spring

(Figure 14, Item 32) to 1.93 inches (4.90 cm). Replace valve spring if load is less than 25 lbs (11.3 kg).

32

77

MAINT_260

Figure 14.

Cylinder Head Valve Spring Load Test.

TM 9-2815-205-24

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0083-17