Kubota M5040, Workshop Manual

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1-S58
M5040, M6040, M7040, WSM ENGINE
(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.
W1064048
Idle Gear Side Clearance
1. Set a dial indicator with its tip on the idle gear (1).
2. Measure the side clearance by moving the idle gear (1) to the
front and rear.
3. If the measurement exceeds the allowable limit, replace the idle
gear collars.
W1064208
Backlash between crank
gear and cam gear
Factory spec.
0.041 to 0.139 mm
0.0016 to 0.0055 in.
Allowable limit
0.22 mm
0.0087 in.
Backlash between cam
gear and balancer 1
gear
Factory spec.
0.041 to 0.134 mm
0.0016 to 0.0053 in.
Allowable limit
0.22 mm
0.0087 in.
Backlash between cam
gear and idle gear
Factory spec.
0.041 to 0.134 mm
0.0016 to 0.0053 in.
Allowable limit
0.22 mm
0.0087 in.
Backlash between idle
gear and injection pump
gear
Factory spec.
0.041 to 0.134 mm
0.0016 to 0.0053 in.
Allowable limit
0.22 mm
0.0087 in.
Backlash between idle
gear and balancer 2
gear
Factory spec.
0.041 to 0.129 mm
0.0016 to 0.0051 in.
Allowable limit
0.22 mm
0.0087 in.
(1) Balancer 1 Gear
(2) Cam Gear
(3) Idle Gear (4) Injection Pump Gear
(5) Balancer 2 Gear
(6) Crank Gear
Side clearance of idle
gear
Factory spec.
0.15 to 0.25 mm
0.0059 to 0.0098 in.
Allowable limit
0.9 mm
0.0354 in.
(1) Idle Gear (A) Side Clearance of Idle Gear
KiSC issued 06, 2008 A