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

a. Loosen the conical nut at fuel injector end and the

conical nut on fuel injection pump side (one is to

reversely tighten the fuel inlet of fuel injector and one is

to loosen the nut of high pressure fuel pipe); Loosen the

conical nut on fuel injection pump side (Two wrenches

are used mainly for disassembly, of which one is to

reversely tighten the fuel outlet of fuel injection pump

and one is to loosen the nut of high pressure fuel pipe,

in order to prevent the fuel outlet of the fuel injection

pump from follow-up rotation). Remove the high

pressure fuel pipe and install the high pressure fuel pipe

protective sleeve;

b. Remove the fuel injector return hose.

c. Remove the fixing bolts of fuel injector pressure plate,

remove the fuel injector body along with its support,

and install the fuel injector protective sleeve.

4. Disassemble the fuel-gas separator

subassembly

a. Remove the crankshaft breathe hose and fuel-gas

separator return hose.

b. Disassemble the fixing bolts of fuel-gas separator.

c. Remove the fuel-gas separator.

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JAC HFC4DA1-2C Specifications

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