Crankshaft Disassembly; Crankshaft Inspection - Honda CB450 1968 Service Manual

3. 5 UPPER AND LOWER CRAN KCASE
49
t
A
t
B
t
C
t
D
fig. 3. 103 Crankshaft measurement
H. Crankshaft Disassembly
1. Remove the cyl inder head and cylinder in
accord ance with Sect ion 3. 2 B.
2. Separate the piston in acc ordance with Sec-
tion 3. 2 W.
3. Separate the lower crankcase in accordance
with Sectio n 3. 5 C.
4. Unscrew the center beari ng cap bol ts and
remove the crankshaft.
I. Crankshaft Inspection
Item
I
Standard value
[ Serviceable li mit
I
A, B, C I
0.05m m max,
I .
I
Replace ,f over
l
Crankshaft and
D I
10.002 inl
I
0.2 mm I0.008 inl
run-out -- -
!Fig. 3. 1 03)\ E,
6
and
I
·o.02m m max.
Replace if over
10.001 inl
0.1 mm I0.004 inl
2 M ain bearing
radial
I
0.006- 0.0 14 mm
Repl a ce if over
clearance
I0.0002 -
!Fig. 3. 1041
0.0005 inl
0.03 mm 10.001 inl
3 Connecting rod
small
17.016-17.034 Replace if over
end
mm I0.6699- 17.07 mm
I
0.6706 inll 10.6721 inl
4
Connecting rod larg e
I
O-O.OOB
mm , Replace if over
end radia l c learance
I0-0.00 03 inl
IOoig
2
~~nl
!Fig. 3. 1051
I
0.07-0.33 mm
Replace if over
5 Co nnecting rod large
I
(0.0028-
end side clear ance
0.0130 inl
0.5 mm
IO.O
197 in}
6 Connecting rod large
I
O 2 1 0
R
1
·f
d flt . - .
mm ep ace
I
over
fF~ g. ~-
106 ) l0,008-0 .04 inl 3.0 mm 10 . 1181 inl
Fig . 3. 104 Me asuring main bearing dia metrical clearance
CD
Dial gouge
®
Outer race
Fig. 3. 105 Measuring connecting rod diametric:al
cle arance
CD
Dial gauge
@
Connecting rod