Kubota G23, Workshop Manual

Page: 133 / 343

ENGINE
G23, G26, WSM
1-S51 (EU)
Camshaft Side Clearance
1. Set a dial indicator with its tip on the camshaft.
2. Measure the side clearance by moving the cam gear to the font
and rear.
3. If the measurement exceeds the allowable limit, replace the
camshaft stopper.
[G23]
[G26]
9Y1210294ENS0065US0
Camshaft Alignment
1. Support the camshaft with V blocks on the surface plate at both
end journals.
2. Set a dial indicator with its tip on the intermediate journal.
3. Measure the camshaft alignment.
4. If the measurement exceeds the allowable limit, replace the
camshaft.
9Y1210294ENS0066US0
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.
[G23]
[G26]
9Y1210294ENS0067US0
Camshaft side clearance
Factory specification
0.15 to 0.31 mm
0.0059 to 0.012 in.
Allowable limit
0.50 mm
0.020 in.
Camshaft side clearance
Factory specification
0.070 to 0.22 mm
0.0028 to 0.0086 in.
Allowable limit
0.30 mm
0.012 in.
Camshaft alignment Allowable limit
0.01 mm
0.0004 in.
Cam height of intake and
exhaust
Factory specification
26.88 mm
1.058 in.
Allowable limit
26.83 mm
1.056 in.
Cam height of intake
Factory specification
28.80 mm
1.134 in.
Allowable limit
28.75 mm
1.132 in.
Cam height of exhaust
Factory specification
29.00 mm
1.142 in.
Allowable limit
28.95 mm
1.140 in.
KiSC issued 08, 2009 A