Kubota D1803-CR-E4, Workshop Manual

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2. Hold the mating gear and move the gear to
measure the backlash.
NOTE
• If the backlash is more than the service limit,
measure the oil clearance in the journal part
of each shaft.
• If the oil clearance is correct, replace the
gear.
• If the crank gear is replaced, it is necessary
to calibrate the injection timing with the
diagnosis tool.
Backlash between
idle gear and
crank gear
Service specifi-
cation 0.04150 to 0.1122 mm
0.001634 to 0.004417 in.
Service limit
0.15 mm
0.0059 in.
Backlash between
idle gear and cam
gear
Service specifi-
cation 0.04150 to 0.1154 mm
0.001634 to 0.004543 in.
Service limit
0.15 mm
0.0059 in.
Backlash between
idle gear and sup-
ply pump gear
Service specifi-
cation 0.04150 to 0.1154 mm
0.001634 to 0.004543 in.
Service limit
0.15 mm
0.0059 in.
Backlash between
crank gear and oil
pump drive gear 2
Service specifi-
cation 0.04150 to 0.1090 mm
0.001634 to 0.004291 in.
Service limit
0.15 mm
0.0059 in.
RELATED PAGE
4.30 Measuring angular deviation between crankshaft
T.D.C. and crankshaft position sensor detected T.D.C.
on page 4-112
7.17 Checking side clearance of idle
gear
Tools required
• Dial gauge
1. Set a dial gauge with its point on the idle gear.
2. Move the idle gear to the front and rear to measure
the side clearance.
NOTE
• If the measurement is more than the service
limit, replace the idle gear collar.
Side clearance of
idle gear
Service specifi-
cation 0.15 to 0.25 mm
0.0059 to 0.0098 in.
Service limit
0.90 mm
0.035 in.
7.18 Checking side clearance of
camshaft
Tools required
• Dial gauge
1. Set a dial gauge with its point on the camshaft.
4. ENGINE
SERVICING
7. Servicing
4-170
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
KiSC issued 12, 2018 A