MAC TOOLS MW250 Instrucciones de operaciones descargar pdf (Pagina 88)

100

101

TM 5-4310-452-14

4-13. VALVE CLEARANCE ADJUSTMENT.

This Task Covers: Adjustment

Initial Setup:

Equipment Conditions: Tools/Test Equipment:

• Engine off and cool. •·General mechanic's tool kit

• Left and right door assemblies open. • Feeler gage

• Battery cables disconnected (see paragraph

4-57).

• Valve covers removed (see paragraph 4-12).

ADJUSTMENT

NOTE

To obtain accurate clearance

reading, ensure that engine Is cool

during valve clearance adjustment.

1. Turn crankshaft pulley (1) clockwise with 36 mm

socket and breaker bar until both valves on No. 1

cylinder overlap (exhaust valve has not yet closed,

while intake valve is opening).

2. Check valve clearance between rocker arm (5) and

top of valve stem (6) of valves (2) in position 1

using Table 4-4 and a 0.15 mm (0.006 in.) feeler

gage. If valve clearance is too wide or too narrow,

perform step 3. If valve clearance is OK, go to step

Table. 4-4 position 1.

Cylinder No. Valve

2 Intake

3 Exhaust

4 Intake Exhaust

4-22

1 2 ... 83 84 85 86 87 88 89 90 91 92 93 ... 404 405

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MAC TOOLS MW250 Instrucciones de operaciones Pagina 88

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