Replace/Repair Rocker Lever Housing Group/Cover Group.

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REPLACEMENT

TM-55-1905-223-24-1 Main Propulsion Engine for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

FIGURE 2-28. Rocker Lever Housing Group/Rocker Housing Cover.

TM 55-1905-220-24-1

2-30. Replace/Repair Rocker Lever Housing Group/Cover Group.

This task covers:

a. Removal,

b. Repair,

c. Replacement.

INITIAL SETUP :

Tools

Equipment Condition

Tool kit, general mechanic's rail

Engine shutdown and secured.

and marine diesel engine,

TM 55-1905-223-10.

Coolant drained. TM 55-1905-223-10.

Torque wrench kit P/N 3377216

Air intake group removed (para. 2-32).

Water tube driver P/N ST-1319

Rocker lever actuator P/N 3375539

Materials/Parts

Valve cover gasket P/N 3040720

Exhaust rocker lever P/N 304-7599

Injector rocker lever P/N 3013300

Plain hexagon nut P/N MS51968-14

Setscrew P/N 168306

Engine poppet valve rocker arm

P/N 205138

Rocker lever housing gasket

P/N 3201517

Emery cloth, Item 18, Appendix C

Cleaning solvent, Item 15, Appendix C

REMOVAL

NOTE

Each main propulsion engine contains sixteen rocker lever housing/cover groups. This procedure covers the

removal, repair, and replacement of one only. It is typical of all sixteen.

a. Remove engine poppet valve rocker arm cover.

(1) Remove the assembled washer bolt (1, FIG. 2-28) and flat washer (34).

(2) Remove two hexagon head capscrews (2), lockwashers (3) and flat washers (4).

2-100