DISASSEMBLY - TM-55-1905-223-24-10194

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FIGURE 3-7. Lube Oil Filter Assembly.

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

ASSEMBLY

TM 55-1905-223-24-1

e. Remove pipe plug (30), hexagon head capscrews (29), and lockwashers (28) retaining access cover (31).

Remove springs (9), ball bearings (8 and 10), and rigid connecting links (I 11, 12 13, and 14) from lube oil

filter head (54).

g. Remove access cover (31 ), lube oil filter cover gasket (32), compression helical spring (33), detent plunger

(34) and valve (35). Keep the parts together to aid installation.

h. Remove hexagon head capscrew (47), lockwasher (48), and shouldered washer (49) retaining the fluid

valve stem (50). Remove fluid valve stem (50), preformed packing (51), compression helical spring (52)

and valve piston (53). Discard the preformed packing (51). Keep the parts together to aid installation.

Remove hexagon head capscrews (20) and lockwashers (19). Remove access cover (18) and gasket

(17). Discard gasket.

Remove machine screws (37) and washers (36).

Remove throttle stop pin (43) from lever (41 ). Remove lever (41 ). Check spring action of detent rod (45).

If necessary, disassemble detent assembly by removing knurled nut (42) from the detent rod (45).

Remove spring (44).

1. Remove shaft retainer plate (40) and pull out detent plunger (38). Remove anddiscard preformed

packings (39 and 46).

m. Remove hexagon head capscrew (6), lockwasher (15) and flat washer (7). Pull out shutoff valve rotor (5)

and seal (16). Discard seal.

n. Remove pipe plugs (56, 57, and 58).

o. Remove hexagon head capscrews (I) and lockwashers (2) retaining access cover (3) to side of engine

block. Remove cover (3) and gasket (4). Discard gasket.

p. Remove adapter bushing (55) only if it is damaged or loose.

REPAIR

a. Clean all parts with cleaning solvent and dry with compressed air.

b. Measure the free length of the springs. Ensure the bypass valve spring (33) and the pressure regulator

spring (22) are between 4.03 inch (102 mm) and 4.18 inch (106 mm). Ensure the piston cooling regulator

spring (52) is between 2.39 inch (60.7 mm) and 2.54 inch (64.5 mm).

Use a spring tester. Measure the force of the spring at the working height. Refer to Table 3-3. Replace

springs that are not to specifications.

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