GPX NC450 - Inspection of Right Crankcase Cover

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Inspection of Right Crankcase
Cover
1. Check whether the crankshaft oil seal of
the right crankcase cover is damaged . If the oil
seal is found to be broken, it needs to be
replaced with a new oil seal ;
When replacing the crankshaft oil seal,
pay attention to two points:
1. Confirm whether the state of the oil
seal is correct. The end face of the NC450
crankshaft oil seal should be marked
with "NJK";
2. The marked side should face
outwards during assembly.
Inspection of water pump shaft, water
pump impeller, water seal components and
oil seal
1. Check whether the water pump impeller
has cracks and whether the inserts of the water
pump impeller are loose. If the above
phenomenon occurs, a new water pump
impeller should be replaced;
2. Check whether the water seal
components and oil seals are broken, and check
whether the wear of the water pump shaft is
abnormal and whether there is bending. If so,
you need to replace the new water seal
components, oil seals and new water pump
shafts ;
When replacing the water seal assembly,
oil seal, and water pump shaft, pay
attention to: 1. Apply an appropriate
amount of oil to the shaft hole of the
NC450 water pump.
Use special tooling to press-fit the NC450
water pump shaft oil seal to the
position, the oil seal end face mark faces
outward;