Cylinder And Cylinder Head - Honda Z50A Manual

C. Inspection
1. Turn the oil pump drive shaft by hand and
make sure that it is turning smoothly.
2. Measuring the clearance between the
outer rotor and the pump body.
Insert the thickness gauge between the
outer rotor and the pump body (Fig. 7).
Standard Value
0.004-0.006
(0.10-0.15 mm)
inch (mm)
Serviceable Limit
Replace if over
0.0079 (0.20 mm)
3. Measuring the end clearance of the rotor.
Place a straight edge across the pump
housing and check the clearance of the
rotor with a thickness gauge (Fig.
8).
Standard Value
0.0008-0.0027
(0.02-0.07 mm)
D. Reassembly
Serviceable Limit
Replace if over
0.0047 (0.12mm)
Perform the reassembly in the reverse order
of disassembly procedure. Particular at-
tention should be paid to the following
items (Fig. 9).
1.
Make sure that the parts are thoroughly
cleaned before assembly.
2. After completing the reassembly of the
pump. check to make sure that the
pump is operating smoothly by turning
the shaft by hand before mounting the
pump in the crankcase.
5. CYLINDER AND CYLINDER HEAD
A. Description
The cylinder head is made of aluminum
alloy to improve the cooling effect. Cylinder
is made of special cast iron which provides
good wear characteristics without being
affected by high temperature and pressure.
9
CD
Thickness gauge
®
Pump body @ Outer rotor
Fig. 7
CD
Straight edge
®
Pump body @ Rotor
Fig.
8
CD
Oil pump body gasket ·
®
Oil pump dwell pin
@ Oil pump body @ 6 mm hex. bolt
®
Oil pump outer rotor @ Oil pump inner rotor
(/) 0!1 pump drive shaft @ Oil pump cover gasket
@
011 pump cover @ 5 mm spring washer
@ 5 mm cross screw @ 6 mm hex. bolt
@ Cam .chain guide sprocket spindle
Fig. 9