Service Manual for WP6 Diesel Engine
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3733 Inspection and Maintenance of High Pressure Fuel Pipe
(1) Check high pressure fuel pipe appearance for crack and oil leakage; if so, replace the pipe or
feedback the problem to the manufacturer.
(2) Check and ensure both connector conical surfaces of high pressure fuel pipe are intact.
3734 Steps to Assemble High Pressure Fuel Pipe
Assembling steps are contrary to disassembling ones. But note that high pressure fuel pipe should
be clean and intact.
374 Disassembly, Inspection, Maintenance and Assembly of Fuel Injector
3741 Exploded View of Fuel Injector
Refer to Fig. 3-46 Exploded view of fuel injection pump.
3742 Steps to Disassemble Fuel Injector
(1) Remove the hollow bolts that connecting each injector and injector oil return pipe.
(2) Remove fastening bolts of injector pressing plate, take down the plate.
(3) Remove the injector with dedicated tool.
3743 Inspection and Maintenance of Fuel Injector
(1) Check copper seal gasket, replace it if it is severely deformed or damaged, clean fitting surface
of injector seat, wipe out the carbon deposit and other foreign matters on it to ensure good
sealing performance; For each injector, do not mix up the sealing gasket and adjusting gasket
during assembling, to ensure injector protrusion meet the requirements.
(2) Check injector oil return pipe for oil leakage and damage, replace the pipe if necessary.
3744 Steps to Assemble Fuel Injector
Assembling steps are contrary to disassembling ones.
375 Disassembly, Inspection, Maintenance and Assembly of Fuel Filters
3751 Exploded View of Fuel Filters
Refer to Fig. 3-46 Exploded view of fuel injection pump.
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