WEICHAI WD10 Service Manual - page 148
Service Manual for WD10 Diesel Engine
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41142 Steps to Disassemble Air Compressor
(1) Remove air compressor intake pipe, water inlet pipe, water outlet pipe and oil inlet pipe.
(2) Remove the three hexagon flange bearing surface toothed bolts and take down the compressor
and O-shape seal ring. As shown in Fig. 4-88.
Air compressor
intake pipe
Air compressor
oil inlet pipe
Air compressor
exhaust pipe
Air compressor
O-shape seal ring
Hexagon flange
bearing surface
toothed bolt
Air compressor
water outlet pipe
Fig. 4-88 Disassembly of air compressor
41143 Inspection and Maintenance of Air Compressor
(1) Air compressor doesn’t produce compressed air.
Fault phenomenon: No compressed air comes out from air compressor.
Possible causes:
1) Compressor relief valve is jammed, valve plate is deformed or broken.
2) Too much carbon deposition accumulated in intake and exhaust port.
Troubleshooting:
1) Check compressor relief valve module, clean and replace the invalid parts.
2) Overhaul cylinder cover, check the valve plate, replace deformed or broken valve plate.
3) Overhaul cylinder cover, clean the valve seat and valve plate.
(2) Insufficient air pressure.
Fault phenomenon: When the engine is running and compressor is charging gasholder, the air
pressure gauge indicates that air pressure cannot reach required starting pressure.
Possible causes: