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Maintenance manual for sunray hfc4da1-2c china-IV diesel engines

III. Illustration for Disassembly of Engine

1. Disassemble the flywheel.

a. Block the flywheel with flywheel clamp, loosen the

fixing bolts between damping pulley and flywheel, and

disassemble the flywheel assembly.

2. Disassemble the belt, air conditioner

compressor, and alternator and water

pump pulleys.

a. Use an open-end wrench to remove the fixing nuts of

engine fan and remove the cooling fan of the engine.

b. Loosen the alternator adjustment bolts and fixing bolts,

remove the fan clutch pulley and alternator belt, and

check the side face and toothed face of the belt for

normal state.

c. Remove the oil and vacuum pump oil return pipe

connectors.

d. Loosen the alternator fixing bolts and adjustment bolts

and disassemble the alternator belt. Check the

alternator belt for presence of aging, cracking, and

abnormal wear. If yes, replace the belt. Arrange the

parts disassembled orderly on the part shelf, remove

the alternator, use hand to rotate the alternator pulley,

and check the inside for presence of noise, stagnation,

and unbalance. Check the alternator for presence of

ablation and check the shaft for presence of abnormal

wear noise.

e. Disassemble the water pump pulley.

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JAC HFC4DA1-2C Specifications

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