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position
Driving angle gear is loose
Tighten the round nuts
Excess abrasion of the upper hole in the
connection piece of support arm
Replace the support arm assembly
Positioning spring inside the main shaft does
not function
Replace
Main shaft is moving ,the bolts for tightening
the cover for the rear of the gear-box body are
loose
Screw the bolts tight
Deformation of shift bar brings about
interference when you shift
Adjust the shift bar or Replace it
Failure to shift the reversing
shift to the right position
Abrasion of reversing fork
Re-adjust the cable of reversing shift
Replace the reversing fork
Malfunction of reversing cable
Re-adjust the cable
Replace the cable
the reversing shaft is loose
Screw the bolts tight at the back of the
reversing shaft
The reversing fork is blocked to a standstill Clean the combined face between
reversing fork and reversing pushing
plate to make the fork move freely
The reversing gears do not
reset
The loosening of reversing shaft makes the
gear be blocked to a standstill
Screw the bolts tight at the back of the
reversing shaft.
Malfunction of spring of the reversing shaft Replace the spring
The reversing shaft is bent and deformed
Replace the reversing shaft
The reversing shaft is loose
Rear bolts of reversing shaft are loose
Screw the reversing shaft
The matching between reversing shaft and
gear-box body is too loose
Replace
Too much noise from the
gears
Deformation and bend of the angle gear and
reversing shaft
Replace
Too much lateral clearance due to excess
abrasion of gears
Replace the gears
The matching between bevel gear and
reversing shaft and gear-box body is too
loose
Replace
Oil leakage of the main
shaft’s rear cover
Malfunction of O-shaped ring for the main
shaft
Replace with O-shaped ring
∮
17×1.8
Malfunction of lip-shaped oil seal in the main
shaft
Replace with lip-shaped oil seal B25407
Malfunction of O-shaped ring for the cover
Replace with O-shaped ring
∮
46×1.8
Oil leakage of the reversing
shaft
Loosening of bolts at the back of reversing
shaft
Screw the bolts tight
Malfunction of O-shaped ring of the
reversing shaft
Replace with O-shaped ring
∮
18×1.8
Oil leakage of the fork shaft
of the reversing shaft
Malfunction of O-shaped ring
Replace with O-shaped ring
∮
1.2×1.8
Oil leakage of the fork shaft
of the clutch
Malfunction of O-shaped ring
Replace with O-shaped ring
∮
1.2×1.8
Oil leakage of the shift shaft Malfunction of O-shaped ring
Replace with O-shaped ring
∮
1.2×1.8
Oil leakage of the flange
connection
The bolts are loose there
Screw the bolts tight
The vulcanized paper board is damaged there Replace
Leakage of the gear-box
body
The gear-box body has tiny hidden holes
Re-welding or brush base paint to stop
the leaking