5-4
HOW
TO
REASSEMBLE
5-4-1
PRECAUTIONS
IN
REASSEMBLY
Every and each part should be cleaned thoroughly. Especially, pay utmost care and attention to the clean-
/"
liness of the piston, cylinder, crankshaft, connecting rod and bearings.
Scrape off carbons completely from the cylinder head and the piston top; especially the carbon adhered
in the groove
of
the piston ring should be careflly and completely taken out.
Carefully check the lip portion of every oil seal. If faulty one is found, replace it without any hesitation.
Apply enough
oil
to the lip portion of the oil sea1 when reassembling.
Replace all the gaskets with new ones.
Replace the key, pin, bolt, nuts, etc. with new one, if necessary.
Whenever tightening torque is specified, conform to the specified figures.
Apply
oil
to the rotating parts and friction surfaces, when reassembling.
Check and adjust the clearances
of
various portions and then reassemble.
When
some
main portions are assembled in the course
of
reassembling, turn or move the gadgets by hand
and pay attention to the frictional noise and resistance.
5-4-2
MEASURING CRANKCASE
and
CRANKSHAFT
Bore the cylinder or take other steps as necessary to
meet the following specifications before reassembl-
ing.
1
I
W
(Crankshaft Pin Width)
29;O.l
rnrn
I
Bore
90
dia.
-o:o16
rnrn
+O
006
Piston Outside Diameter (In Skirt Thrust Direction)
89.973
dia.
-o.02
mrn
0
I
Piston to Cylinder
at
Piston Skirt Thrust Face
I
0.01
1
L
-
0.053
L
I
Piston Ring Gap (To Ring
-
Second Ring)
I
0.1
L
-
0.3
L
TOP
0.11
L-0.15
L
Piston Ring Side Clearance in Grooves
0.01
L
-
0.05
L
Oi
I
0.06
L
-
0.10
L
Second
Clearance between Connecting Rod
Large End and Crankshaft Pin
and
Outside
Diameter
Clearance between Inside
Side Clearance
0.1
L
-
0.3
L
0.050
-
0.082
L
Clearance between Connecting Rod
~~ ~~~ ~~
1
Small End and Piston Pin
0.010
L
-
0.032
L
Clearanc between Piston Pin and Piston Pin Hole
0.011
T
-
0.01
1
L
L:
LOOSE
T:
TlGH
Table
1
-
20
-
To Next Page
Loading...
Need help?
General
