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Measure the large head clearance of connecting rod
with thick gauge.
Maintenance threshold
：
0.7 mm
Inspection of left and right box bearing
1.
Check that all bearings of left and right box are
flexible in rotation; if the rotation is not flexible or there
is a-issuing phenomenon, the same type of bearing
should be replaced ;
2. Remove the crankshaft bearings of left and right
box to check their diameter and end jumps, and replace
new crankshaft bearings if noise or diameter jumps and
end jumps are found to be too large.
Inspection of shift fork, shift fork shaft, transmission hub
Check each shift fork for wear, bending or any other
malfunction, measure the inner diameter of shift fork.
Maintenance thresholds for main shaft fork
：
φ12.45
mm
Maintenance thresholds for counter shaft fork
：
φ14.45
mm
