Timing Gears - Kubota MX5100 Workshop Manual

MX5100, WSM

(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 idle
gear and crank gear
Allowable limit
Factory spec.
Backlash between idle
gear and cam gear
Allowable limit
Factory spec.
Backlash between idle
gear and injection pump
gear
Allowable limit
Factory spec.
Backlash between crank
gear and oil pump gear
Allowable limit
Factory spec.
Backlash between idle
gear and balancer gear
(Intake side)
Allowable limit
Factory spec.
Backlash between cam
gear and balancer gear
(Exhaust side)
Allowable limit
(1) Injection Pump Gear
(2) Idle Gear
(3) Cam Gear
(4) Balancer Gear
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
1-S61
ENGINE
0.04150 to 0.1122 mm
0.001634 to 0.004417 in.
0.15 mm
0.0059 in.
0.04150 to 0.1154 mm
0.001634 to 0.004543 in.
0.15 mm
0.0059 in.
0.04150 to 0.1154 mm
0.001634 to 0.004543 in.
0.15 mm
0.0059 in.
0.04150 to 0.1090 mm
0.001634 to 0.004291 in.
0.15 mm
0.0059 in.
0.03500 to 0.1160 mm
0.001378 to 0.004566 in.
0.15 mm
0.0059 in.
0.03500 to 0.1160 mm
0.001378 to 0.004566 in.
0.15 mm
0.0059 in.
(5) Oil Pump Drive Gear
(6) Crank Gear
(7) Balancer Gear
W1029564
0.12 to 0.48 mm
0.0048 to 0.018 in.
0.9 mm
0.04 in.
W1029843