Nanni 5.280HE Workshop Manual page 94

03-M Series, WSM
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 a cylinder
gauge, and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
camshaft.
Factory spec.
Oil clearance of
camshaft journal
Allowable limit
Camshaft journal O.D. Factory spec.
Cylinder block bore I.D. Factory spec.
Oil Clearance between Idle Gear Shaft and Idle Gear Bushing
1. Measure the idle gear shaft O.D. with an outside micrometer.
2. Measure the idle gear bushing I.D. with an inside micrometer,
and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
bushing.
If it still exceeds the allowable limit, replace the idle gear shaft.
Factory spec.
Oil clearance between
idle gear shaft and idle
gear bushing
Allowable limit
Idle gear shaft O.D. Factory spec.
Idle gear bushing I.D. Factory spec.
Replacing Idle Gear Bushing
(When removing)
1. Press out the used idle gear bushing using an idle gear bushing
replacing tool. (See page "SPECIAL TOOLS".)
(When installing)
1. Clean a new idle gear bushing and idle gear bore, and apply
engine oil to them.
2. Press in a new bushing using an idle gear bushing replacing tool,
until it is flush with the end of the idle gear.
(A) When Removing
S-77
DIESEL ENGINE
0.050 to 0.091 mm
0.00197 to 0.00358 in.
0.15 mm
0.0059 in.
39.934 to 39.950 mm
1.57221 to 1.57284 in.
40.000 to 40.025 mm
1.57480 to 1.57579 in.
W1031662
0.025 to 0.066 mm
0.00098 to 0.00260 in.
0.10 mm
0.0039 in.
37.959 to 37.975 mm
1.49445 to 1.49508 in.
38.000 to 38.025 mm
1.49606 to 1.49705 in.
W1030933
(B) When Installing
W1031083
KiSC issued 08, 2012 A