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WP13 Diesel Engine Series Operating Manual

B. Loosen nut 1;

C. Adjust the adjusting bolt 1 until the contact clearance is 0 to the valve bridge;

D. Loosen nut 2;

E. Adjust the adjusting bolt 2 and insert a feeler gauge (0.6mm) between the adjusting bolt 2 and

the valve bridge;

F. Adjust the adjusting bolt 2 until the small piston goes down to its limit to clamp the feeler

gauge;

G. Adjust the valve clearance (0.6mm), rotate the adjusting bolt until the feeler gauge has no

clearance, keep it and lock the nut;

H. Adjust the adjusting bolt 1 and insert a 0.4mm feeler between the valve axle and the adjusting

bolt;

I. Adjust the adjusting bolt 1 until the small piston goes to its limit to clamp the feeler, keep it

and lock the nut;

J. Check the valve clearance again, and if necessary, adjust it again.

● Replace the fuel filter element as shown in Figure 5-15.

Follow the steps below to replace the fuel filter element:

A. Remove the old fuel filter element; if the water collecting vessel installed on the strainer can

also be used, please remove it;

B. Lubricate the seal port;

C. Screw the filter by hand until the seal port contacts the interface;

D. Screw the filter again by hand (at about a 3/4 circle) until the filter is firmly installed;

E. Exhaust the air until there is no bubble appearing;

F. Conduct leakage test.

Figure 5-15

Attention!

When replacing the spinning strainer or reinstalling the oil delivery pipe, you need to exhaust the air

in the strainer.

Steps (as shown in Figure 5-16)

A. Stop the engine;

B. Remove the vent screw;

C. Use a hand pump to inflate until there is oil coming out from the vent screw;

D. Retighten the vent screw;

Fuel filter

WEICHAI WP13 Series User Manual

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