ZHEJIANG KAYO MOTOR CO., LTD.
REMOVAL OF THE MAIN AND COUNTER SHAFT
The removal steps of the crankshaft and the main and auxiliary shafts are as follows:
Take out the crankshaft assembly from the box.
Take out the shift fork shaft, shift fork, shift drum and main and counter shaft components from the box.
Note: When taking the main and counter shaft components, make sure that no parts are missing.
DISASSEMBLE OF THE VARIABLE SPEED DRUM
The decomposition steps of the
gear shift
drum are as follows:
Remove the spring clip.
Pull out the fork pin.
Remove the fork
CRANKSHAFT INSPECTION
The inspection steps of the crankshaft are as follows:
Place the crankshaft on the V-shaped iron, and measure the backlash of the big end of the connecting rod with a
thickness gauge.
Repair limit value
：
0.4mm
；
Use a dial indicator to measure the runout of the crankshaft shaft diameter and the actual runout of the crankshaft.
Repair limit value
：
0.1 mm
Measure the radial clearance between two points in the X and Y directions of the big end of the connecting rod.
Repair limit value: 0.015mm
LEFT AND RIGHT CRANKCASE BEARING INSPECTION
The inspection steps of the left and right crankcase bearings are as follows:
Check whether the rotation of all the bearings of the left and right boxes is flexible. If the rotation is not flexible or
there is a phenomenon of card issuance, the bearings of the same model should be replaced.
Take down the crankshaft bearings of the left and right boxes to check their diameter and end jump. If there is noise
or large diameter and end jump, the crankshaft bearings should be replaced with new ones.
Check whether the oil channels of the left and right tanks are unblocked.
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