WEICHAI WD10 Service Manual - page 88
Service Manual for WD10 Diesel Engine
78
abrasion.
(2) Measure camshaft main journal circular run-out.
Camshaft
Maximum
allowed
circular run-out
Measured value
The second main journal (Between cylinder 1 and
cylinder 2)
0.04
The third main journal (Between cylinder 2 and
cylinder 3)
0.05
The fourth main journal (Between cylinder 3 and
cylinder 4)
0.06
The fifth main journal (Between cylinder 4 and
cylinder 5)
0.05
The sixth main journal (Between cylinder 5 and
cylinder 6)
0.04
(3) Measure tappet maximum lift (distance between cam tip and base circle)
Camshaft
Standard value
Measured value
Intake tappet maximum lift
7.0743mm
Exhaust tappet maximum lift
8.3183mm
(4) Check timing gear for interference and severe tooth face wear.
4524 Steps to Assemble Camshaft
After disassembling, examine camshaft and timing gear, and parts with wear or large parameter
deviation should be repaired or replaced.
(1) Rub-up camshaft fitting hole with towel and check the hole for bump damage, apply proper
amount of lubricating oil on camshaft sleeve inner surface. For camshaft fitting hole that
involving bump damaged should not be reused even after repair.
(2) Place camshaft guide tool and lubricating sleeve into the fitting hole, rub-up camshaft and
check for bump damage, and then insert camshaft into camshaft fitting hole, remove camshaft
guide tool and lubricating sleeve after the camshaft is properly fitted. Be careful not to crash
camshaft sleeve during the inserting process.
(3) Install camshaft thrust plates, loose-fit the pre-glued hexagon bolts and tighten them.
Tightening torque of the bolts should be 29~35Nm.
(4) Apply KB277 sealant on camshaft fitting hole bowl shape plug fore-end, the sealant trace
should be continuous and enclosed. And then press the plug into camshaft fitting hole and clean
up the remnant sealant around the plug, make sure the plug is free of turnup.