Piston And Connecting Rod - Kubota Z400-B Handbuch

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[6] PISTON AND CONNECTING ROD
Crankshaft Sleeve
1. Check the wear on the crankshaft sleeve.
2. If the wear exceeds the allowable limit or when the engine
• IMPORTANT:
• Break apart and remove the used crankshaft sleeve and
install a new one using the crank sleeve setter.
(Code No. 07916-34041)
• The sleeve must be heated to between 150 and 250°C
(302 and 482
c
F) before it is installed.
Piston Pin-Hole
1. Measure the I.D. of piston pin-hole lengthwise and width ­
wise of the piston with a cylinder gauge.
2. If the measurement exceeds the allowable limit, replace
the piston.
Factory
18.000 to 18.011 mm
I
specification 0.70886 to 0.70910 in.
Piston pi n-hole I.D.
Allowable 18.05 mm
limit
0.7106 in.
I
Clearance between Piston Pin and
1. Measure the O. D. of the piston pin with an outside micro­
meter.
2. Measure the I.D. of the piston pin bushing with a cylinder
gauge.
3. If the clearance exceeds the allowable limit, replace the
bushing.
4. If the clearance still exceeds the allowable limit after re­
placing the bushing, replace the piston pin_
Clearance Factory 0.016 to 0.039 mm
between specification 0.00063 to 0.00154 in.
~----------~------------~
Piston pin Allowable 0.10 mm
and bushing __ 1"_lm_i_t
--------I-
0.0039 in.
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Piston pin
I
Factory 18.025 to 18.040 mm
bushing I.D. specification 0.70965 to 0.71024 in.
-----r------------------~
Piston pin Factory 18.001 to 18.009 mm
D.O. specification 0.70870 to 0.70902 in.
S-107