Operation and Maintenance Manual forWP10 Series Four-valve Diesel Engine (China IV, V)
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remove the collector.
b. Apply lubricating oil to the sealing port.
c. Screw the fuel filter with hands until the sealing port comes into contact with the mating port.
d. Continue to screw the new fuel filter until it is securely installed (about 3/4 turn).
e. Remove the air in the fuel system.
f. Conduct the leakage test.
Figure 5-12
Notice: After replacing the primary spin-on filter or reinstalling fuel pipe, remove the air in the primary filter (see
figure 5-13).
① Stop the engine.
② Dismantle the bleeding screw on the primary fuel filter.
③ Pumping fuel with hand pump until only fuel comes out.
④ Retighten the bleeding screw.
Figure 5-13 Air removal from the primary fuel filter
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