Timing Gears Servicing; Timing Gear Backlash; Idle Gear Side Clearance - Kubota KX080-3 Workshop Manual

WSM KX080-3 Service
(2) Timing Gears

Timing Gear Backlash

1. Set a dial indicator (lever type) with its tip on the gear tooth.
2. Move the gear to measure the backlash, holding its mating gear.
3. If the backlash exceeds the allowable limit, check the oil
clearance of the shafts and the gear.
4. If the oil clearance is proper, replace the gear.
Factory spec.
Backlash between crank
gear and idle gear 1
Allowable limit
Factory spec.
Backlash between idle
gear 1 and cam gear
Allowable limit
Factory spec.
Backlash between idle
gear 1 and idle gear 2
Allowable limit
Factory spec.
Backlash between idle
gear 2 and injection
pump gear
Allowable limit
Factory spec.
Backlash between cam
gear and balancer gear
1
Allowable limit
Factory spec.
Backlash between idle
gear 1 and balancer
gear 2
Allowable limit

Idle Gear Side Clearance

1. Set a dial indicator with its tip on the idle gear.
2. Measure the side clearance by moving the idle gear to the front
and rear.
3. If the measurement exceeds the allowable limit, replace the idle
gear collar.
Factory spec.
Idle gear side clearance
Allowable limit
III-S-152
Engine
0.049 to 0.193 mm
0.0019 to 0.0076 in.
0.22 mm
0.0087 in.
0.049 to 0.189 mm
0.0019 to 0.0074 in.
0.22 mm
0.0087 in.
0.044 to 0.185 mm
0.0017 to 0.0073 in.
0.22 mm
0.0087 in.
0.044 to 0.177 mm
0.0017 to 0.0070 in.
0.22 mm
0.0087 in.
0.047 to 0.182 mm
0.0018 to 0.0072 in.
0.22 mm
0.0087 in.
0.044 to 0.183 mm
0.0017 to 0.0072 in.
0.22 mm
0.0087 in.
W1064048
0.15 to 0.30 mm
0.0059 to 0.0118 in.
0.9 mm
0.0354 in.
W1064208