Kubota M5040, Workshop Manual

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1-S60
M5040, M6040, M7040, WSM ENGINE
Cam Height
1. Measure the height of the cam at its highest point with an outside
micrometer.
2. If the measurement is less than the allowable limit, replace the
camshaft.
W1064551
Oil Clearance of Camshaft Journal
1. Measure the camshaft journal O.D. with an outside micrometer.
2. Measure the cylinder block bore I.D. for camshaft with an inside
micrometer.
3. If the clearance exceeds the allowable limit, replace the
camshaft.
W1064798
Replacing Camshaft Cover (If necessary)
1. Remove the used camshaft cover and clean the hole.
2. Install the new camshaft cover (1) until bumping using camshaft
cover replacing tool. (Refer to “8. SPECIAL TOOLS” at “G.
GENERAL” section.)
W1048526
Intake and exhaust cam
height
Factory
spec.
Intake
valve 37.50 mm
1.4764 in.
Exhaust
valve 37.90 mm
1.4921 in.
Allowable
limit
Intake
valve 37.00 mm
1.4567 in.
Exhaust
valve 37.40 mm
1.4724 in.
(1) Camshaft (2) Cam
Oil clearance of
camshaft journal
Factory spec.
0.050 to 0.091 mm
0.0020 to 0.0036 in.
Allowable limit
0.15 mm
0.0059 in.
Camshaft journal 1 O.D. Factory spec.
34.034 to 34.050 mm
1.3399 to 1.3406 in.
Camshaft block bore 1
I.D.
Factory spec.
35.000 to 35.025 mm
1.3780 to 1.3789 in.
Camshaft journal 2 O.D. Factory spec.
43.934 to 43.950 mm
1.7297 to 1.7303 in.
Camshaft block bore 2
I.D.
Factory spec.
44.000 to 44.025 mm
1.7323 to 1.7333 in.
(1) Camshaft Journal 1 (2) Camshaft Journal 2
(1) Camshaft Cover
KiSC issued 06, 2008 A