Kubota D1803-CR-E4 - Checking Cam Height; Checking Oil Clearance between Camshaft Journal and Crankcase Bore

(B) Installing direction
7.21 Checking cam height
Tools required
•
External micrometer
1.
Measure the height of the cam at its highest point
with an external micrometer.
NOTE
• If the
measurement is less than the service
limit, replace the camshaft.
Cam height
D1803-CR-
E4, -TE4, -
TIE4
Intake
Exhaust
Service speci-
fication
33.90 mm
1.335 in.
Service limit
33.85 mm
1.333 in.
Cam height
V2403-CR-
E4, -TE4, -
TE4BG, -TIE4
Intake
Service speci-
fication
33.47 mm
1.318 in.
Service limit
33.42 mm
1.316 in.
Exhaust
Service speci-
fication
33.00 mm
1.299 in.
Service limit
32.95 mm
1.297 in.
7.22 Checking oil clearance between
camshaft journal and crankcase
bore
Tools required
• External micrometer
•
Internal micrometer
• Cylinder gauge
1. Measure the camshaft journal O.D. with an external
micrometer.
Camshaft journal
O.D.
Service specifi-
cation
39.934 to 39.950 mm
1.5722 to 1.5728 in.
2. Measure the
crankcase bore I.D. for the camshaft
with an internal micrometer or cylinder gauge.
Crankcase bore
I.D.
Service specifi-
cation
40.000 to 40.025 mm
1.5748 to 1.5757 in.
3. Calculate the oil clearance.
NOTE
• If the
oil clearance is more than the service
limit, replace the camshaft.
Oil clearance of
camshaft journal
Service specifi-
cation
0.050 to 0.091 mm
0.0020 to 0.0035 in.
Service limit
0.15 mm
0.0059 in.
4. ENGINE
SERVICING
7. Servicing
4-172
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