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Inspection of the left body oil pump
1.
Check if the left body oil pump rotor assembly is
worn or damaged ;
2. Check if the left body oil pump cover plate is worn
or damaged.
Left oil pump cover Left Engine oil pump rotor
combination
Installation of the left body oil pump
1.
Install the left oil pump into the corresponding hole of the left body ;
2.
Fasten the oil pump left cover M5×1 with 3pcs of GB/T16674 small plate bolts.
Note
：
1.When install the oil pump rotor, the marked face of the inner and outer
rotor should be in the same direction ;
2. Fastening torque of the bolt of the cover plate of the left machine oil
pump :7~9 N.M;
3. After fastening, check whether the oil pump shaft rotates flexibly.
Installation of the main and driven gear
1.
First install the NC250 crankshaft shaft to the balance shaft, in the keyway NC250 the balance shaft flat key
4×4 13 to the balance shaft, finally install the balance shaft from the moving gear to the balance shaft ;
2.
First install the balance active tooth to the left crank, then install the NC250 crankshaft timing sprocket to the
left crank;
Note
：
When balancing the main and follower teeth, the timing marks of the positive
balance main and follower teeth should be matched with each other.
3. Put the balance active tooth nut locking washer and the CB125 clutch disc washer on the crankshaft timing
active sprocket and balance shaft driven gear, respectively. Daub 3~4 thread fastening glue M16M24×1 clutch
locking nut on the balance shaft locking nut, install it to the crankshaft and balance shaft and fasten it.
Note
：
Tightening torque of locking nut of balance main and follower teeth
：
80
～
90N·m
。
