Weichai America Corp.
42
required range after deburring, then the camshaft should be replaced.
Fig. 4-3 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.
Rotate crankshaft to check whether 0 tick of each gear is normally engaged.
4.2.4 Inspection and maintenance of camshaft
1. Check whether there is wear trace on cam face that contacting tappet, check main journal for
seizure and abrasion.
2. Check whether timing gear and hexagon bolts are distorted.
To Next Page
Loading...
