MAC TOOLS MW250 Instruções de Operação descarregar pdf (Página 280)

TM 5-4310-452-14

5-5. ENGINE REPLACEMENT.

This Task Covers:

a. Removal b. Installation

Initial Setup:

Equipment Conditions: Equipment Conditions (Con't):

• Engine off. • Solenoid valve removed (see paragraph 4-59).

• Storage batteries removed (see paragraph 4-57). • Compressor oil lines and fittings disconnected

• Roof assembly removed (see paragraph 5-31). (see paragraph 4-86).

• Exhaust manifold removed (see paragraph 4-14). • Unloader valve assembly removed (see para-

• Intake manifold removed (see paragraph 4-15). graph 4-90).

• Oil cooler removed (see paragraph 4-17). • Compressor fan and fan drive removed (see

• Oil line removed (see paragraph 4-20). paragraph 4-92).

• Metering fuel pump removed (see para- • Blowdown valve removed (see paragraph 4-95).

graph 4-22). • Fuel injection pump and governor removed (see

• Fuel lines and fittings removed (see para- paragraph 5-20).

graph 4-24).

• Engine throttle control removed (see para- Materials/Parts:

graph 4-25). • Three resilient mounts

• Engine stop cable at governor disconnected (see • Nine lockwashers

paragraph 4-29),

• Blower assembly fan removed (see para-

graph 4-32). Tools/Test Equipment:

• Cowling, duct, guide rail, shield, and plates • General mechanic's tool kit

removed (see paragraph 4-34). • Hoist, 2000 lb. minimum capacity

• Idler pulley removed (see paragraph 4-35). • Sling, 2000 lb. minimum capacity

• Alternator removed (see paragraph 4-36). • Two lifting eyebolts (Fabricated, Appendix G)

• Starter motor removed (see paragraph 4-39).

• Belt break switch removed (see paragraph 4-42). Personnel Required: Two

• Oil temperature switch removed (see para-

graph 4-43).

a. REMOVAL

CAUTION

Engine and compressor must be removed as a complete unit. Compressor mounting bracket

supports rear of the engine. If engine and compressor are separated before removal, major

damage to engine, compressor, and trailer can result.

1. Install lifting eyebolts (8) in threaded holes (3) at each end of engine (4).

2. Position hoist (9) in place over engine (4) and compressor (11). Attach lifting sling (10) to lifting eyebolts (8) and

hoist. Take up slack in lifting sling and hoist.

3. Remove screw (12), 2 loop clamps (14), and wiring harness (13) from mounting bracket (17).

4. Remove screw (25), 2 loop clamps (23), and 2 wiring harnesses (24) from side of engine (4).

5-8

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MAC TOOLS MW250 Instruções de Operação Página 280