Shibaura ST330, Workshop Manual

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3. ENGINE REASSEMBLY
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Cautions before assembly
1) Wash parts to be installed. (Especially wash oil passage, bearing, piston and cylinder bore carefully.)
2) Coat the sliding and rotating parts of the cylinder bore, piston, bearing and other parts with new oil before installing.
3) Replace the gaskets with new ones. If necessary, use liquid packing to prevent oil leakage.
4) Do not tighten bolts and nuts for aluminum alloy parts excessively. Tighten them with specified torque.
1) Reassembly
(1) Relief valve assembly with O-Ring.
Relief valve tightening torque to:
Relief valve tightening torque
49 – 59 N·m {5.0 – 6.0 kgf·m}
(2) Crank shaft and bearing holder assembly
Cylinder block to bearing holder tightening torque
Bolts fixing bearing holder
A
Hexagon socket
head blot
25 – 29 N·m
{2.5 – 3.0 kgf·m}
B Hexagon bolt
49 – 54 N·m
{5.0 – 5.5 kgf·m}
NOTE:
1. Take care not to damage the bush in the cylinder block
by the crankshaft gear when install the crankshaft and
bearing holder assembly.
2. Install the two hexagon socket head bolts for the
flywheel side bearing holder.
(3) Measure the endplay of crankshaft
Crankshaft end play
Standard value 0.1 – 0.4 mm
Service limit 0.5 mm
152Y
153Y