MAC TOOLS MW250 Instruções de Operação descarregar pdf (Página 305)

100

101

TM 5-4310-452-14

5-13. VALVE TRAIN MECHANISM MAINTENANCE (Con't).

7. Remove 2 push rods (18) from cylinder head (15) and 2 access covers (10).

8. Push down on access covers (10) to depress springs (12), then remove 2 access covers (10), flatwashers (9 and 11),

springs, caps (13), and preformed packings (14). Discard preformed packings.

9. Remove tappets (17) (see paragraph 5-15).

c. ASSEMBLY

1. Install tappets (17) (see paragraph 5-15).

2. Using spring compressor, assemble 2 caps (13) and springs (12) and install on access covers (10).

3. Install 2 flatwashers (9 and 11) and 2 new preformed packings (14).

4. Install 2 access covers (10) and remove spring compressors.

5. Install 2 push rods (18) in cylinder head (15) and access covers (10).

6. Install 2 oil nozzles (1) and nuts (2) in rocker arms (4).

7. Install 2 thrust pads (20), adjustable screws (19), and nuts (3) in rocker arms (4).

NOTE

Ensure that bushing oil holes are lined up with rocker arm oil holes.

8. Install 2 bushings (21) in rocker arms (4).

NOTE

Perform step 9 if studs were removed.

9. Install 2 studs (6) in rocker arm bracket (8).

10. Install 2 shafts (5), rocker arms (4), 2 washers (22), new lockwashers (23), and nuts (24) on studs (6).

d. INSTALLATION]

1. Install rocker arm bracket (8) in place on cylinder head studs (16).

2. Install 3 nuts (7).

3. Adjust valve clearance (see paragraph 4-13).

4. Install valve cover (see paragraph 4-12).

FOLLOW-ON TASKS:

• Connect battery cables (see paragraph 4-57).

• Close left and right door assemblies.

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MAC TOOLS MW250 Instruções de Operação Página 305

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