Timing Gear And Camshaft - Kubota EA330-E4 Series Workshop Manual

EA330-E4, WSM

(4) Timing Gear and 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 gear.
4. If the oil clearance is proper, replace the gear.
Factory
specifica-
tion
Backlash
Allowable
limit
Side Clearance of Idle Gear
1. Pull the idle gear collar 2 (1) and push the idle gear (2) to each
end.
2. Measure the clearance "A" between the idle gear and idle gear
collar 2 with a feeler gauge.
3. If the clearance exceeds the allowable limit, replace the idle
gear collar 1 (3).
Factory specification
Idle gear side clearance
Allowable limit
Thickness of idle gear
Factory specification
collar 1
(1) Idle Gear Collar 2
(2) Idle Gear
(2) Idle Gear Collar 1
Side Clearance of Cam Gear
1. Pull the cam gear (2) with the camshaft (1) to its end.
2. Measure the clearance "A" between the cam gear (2) and
camshaft stopper (3).
3. If the clearance exceeds the allowable limit, replace the
camshaft stopper.
Factory specification
Cam gear side clearance
Allowable limit
Thickness of camshaft
Factory specification
stopper
(1) Camshaft
(2) Cam Gear
(2) Stopper
1-S55
ENGINE
Barancer
0.0490 to 0.135 mm
gear 1 ×
0.00193 to 0.00531 in.
gear 2
Other 0.0430 to 0.130 mm
gears 0.00170 to 0.00511 in.
0.3 mm
All gears
0.01 in.
9Y1211018ENS0096US0
0.20 to 0.51 mm
0.0079 to 0.020 in.
0.9 mm
0.04 in.
2.45 to 2.50 mm
0.0965 to 0.0984 in.
A: Clearance
9Y1211018ENS0097US0
0.0700 to 0.220 mm
0.00276 to 0.00866 in.
0.3 mm
0.001 in.
3.780 to 3.855 mm
0.1489 to 0.1517 in.
A: Clearance
9Y1211018ENS0098US0
KiSC issued 05, 2015 A