Timing Gears, Camshaft And Fuel Camshaft - Kubota WSM STV32 Workshop Manual

STV32 · STV36 · STV40, WSM

(2) Timing Gears, Camshaft and Fuel Camshaft

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 not 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 oil pump
gear
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
Camshaft Side Clearance
1. Set a dial indicator with its tip on the cam gear.
2. Measure the side clearance by moving the cam gear to the
front and rear.
3. If the measurement exceeds the allowable limit, replace the
camshaft stopper.
Factory spec.
Camshaft side
clearance
Allowable limit
1-S52
ENGINE
0.0415 to 0.1122 mm
0.00163 to 0.00442 in.
0.15 mm
0.0059 in.
0.0415 to 0.1154 mm
0.00163 to 0.00454 in.
0.15 mm
0.0059 in.
0.0415 to 0.1154 mm
0.00163 to 0.00454 in.
0.15 mm
0.0059 in.
0.0415 to 0.1090 mm
0.00163 to 0.00429 in.
0.15 mm
0.0059 in.
0000007508E
0.12 to 0.48 mm
0.0047 to 0.0189 in.
0.90 mm
0.0354 in.
0000005479E
0.07 to 0.22 mm
0.0028 to 0.0087 in.
0.30 mm
0.0118 in.
0000005480E
KiSC issued 04, 2006 A