SDLG WP6, Service Manual

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Service Manual for WP6 Diesel Engine
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353 Disassembly, Inspection, Maintenance and Assembly of Rocker and
Rocker Shaft
3531 Exploded View of Rocker and Rocker Shaft
Hexagon nut
Rocker
Adjusting screw
Hexagon bolt
Rocker seat
Cylinder cover
Butterfly spring washer
Circlip for shaft
Fig. 3-36 Exploded view of rocker and rocker shaft
3532 Steps to Disassemble Rocker and Rocker Shaft
(1) Rotate crankshaft to check whether rocker is flexible.
(2) Measure each valve clearance, and check the change of valve clearance.
(3) If the rocker is not flexible or too big valve clearance, loosen hexagon screw and then take
down rocker seat, circlip for shaft, butterfly spring washer, rocker and the other butterfly spring
washer, mark them to prevent confusion.
3533 Inspection and Maintenance of Rocker and Rocker Shaft
(1) Clean up the rocker and check its appearance for crack.
(2) Check rocker inner hole for abrasion and scratch, and measure its diameter.
(3) Check rocker adjusting screw and the other end arc surface for abrasion.
(4) Check whether all oil galleries are smooth. Measure diameter of rocker inner hole and rocker
shaft, and calculate the fit clearance.