XV Reduction Gear
Preparatory data-----------------15.1
Fault diagnosis------------------15.2
Gearshift mechanism----------15.3
Installation----------------------15.4
15.1 Preparatory Data
Function: Transfer torque and determinate the final output torque and rotary speed.
Basic data Unit: mm
Gearshift
mechanism
Shift fork shaft OD 9.98-9.995 9.96
Diameter of shift fork inner hole 10-10.015 10.05
Shift fork thickness 4.8-4.9 4.6
Gearshift hub OD 39.8-40 39.75
Gearshift hub lock groove width 6.1-6.2 6.35
15.2 Fault Diagnosis
Hard to engage gear Difficult gearshift
Worn or distorted gearshift fork Clutch is not completely separated.
Broken shift fork guide pin Defective transmission pull spring
Worn gear pawl
Worn gearshift drum lock groove
Automatic gearshift
Connecting pawl is worn and its edge turns round.
Weak transmission unit return spring.
Spline gear of spline shaft and spline groove of sliding gear are worn, which result in a greater axial force during
operation of gears.
Worn gearshift drum and shift fork.
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