WEICHAI WD10 Service Manual - page 91
Service Manual for WD10 Diesel Engine
81
valve clearance:
As shown in Fig. 4-44, firstly loose the adjusting bolt 2, and then adjust valve clearance
adjusting screw on pushrod end 10 without compressing exhaust valve rocker sealing
surface until total valve clearance is 0.4mm, and then tighten adjusting nut. (ATTENTION:
In the adjusting process, you should rotate the valve clearance adjusting screw until
the feeler gauge is gently infibulated, so that valve rocker piston 5 can be pushed to
the bottom and no clearance between piston and piston hole bottom).
11 Hexagon bolt
12 Supporting arm
10 Pushrod end
9 Rocker seat
1 Adjusting nut
2 Bolt
3 Valve-rocker assembly
4 Steel ball
5 Valve-rocker piston
6 Piston spring
7 Roller pin
8 Ball valve spring
Fig. 4-44
As shown in Fig. 4-45, place a 0.25mm feeler gauge between rocker piston and exhaust
valve, and adjust valve clearance to 0.25mm by adjusting bolt assembly 2, tighten the
locknut. ATTENTION: In the adjusting process, you should rotate bolt assembly 2
until the feeler gauge is gently infibulated, so that valve rocker piston 5 can be pushed
to the bottom and no clearance between piston and piston hole bottom
Fig. 4-45
Fig. 4-46