Weichai America Corp.
Revision: August 2019 71
④
Install gaskets, flange, washers and hexagon bolts on camshaft threaded end. Measure the axial
clearance of camshaft, which should be 0.1~0.29mm, if the clearance is too small, check
whether there is burr between camshaft and sector plate. If fail to adjust the clearance to
required range after deburring, then the camshaft should be replaced.
⑤
Rotate the crankshaft until 0 tick on timing gear is closest to camshaft, install camshaft timing
gear, make sure 0 tick of timing gear is engaged with 0 tick of crankshaft gear;
Fig.
11- 14 Crankshaft gear and camshaft meshing diagram
⑥
After correctly installed the gears, mark 0 tick position of camshaft timing gear and crankshaft
timing gear with a marking pen.
⑦
After adjusting the holes, install camshaft bolts (cleaned and applied with KB277 sealant)
through flanges holes; pre-tighten camshaft timing gear fixing bolts with pneumatic impact
wrench, and pre-tighten connecting bolts between camshaft timing gear and fuel injection pump
driven gear. Tighten the bolts with torque spanner, tightening torque for M10 bolts: 85~90Nm,
tightening torque for M8 bolts: 55~60.5Nm, seal up the bolts with lacquer after tightening.
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