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HON'DA
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V45 ~~~:!
12. CRANKSHAFT/PISTON
SERVICE
INFORMATION
TROUBLESHOOTING
CONNECTING
ROD REMOVAL
PISTON REMOVAL
CRANKSHAFT
REMOVAL
SERVICE INFORMATION
GENERAL
12-1
12-2
12-3
12-4
12-7
BEARING
INSPECTION
12-8
BEARING SELECTION
12-
10
CRANKSHAFT
INSTALLATION
12-12
PISTON AND
ROD
INSTALLATION
12-
12
•
All beari ng inse
rts
are
se
lect fil and are identified by color code
.
Select replacement bearings
from the
code tables. After
installing new bearings, recheck them with plastigauge to verify clearance
.
•
App ly molybdenum disu lf ied grease to the main journals and crankpins during
assembly.
•
Be fore
r
emov ing the
p iston
and connecting rod assembl
ies.
clean the top of the
cylinder
of any carbon
deposits.
•
For
serviCing
the
piston,
connecting
rod and
crankshaft,
the crankcase assembly must be separated (Section
111
.
SPECIFICATIONS
ITEM
STANDARD
SERVICE
LIMIT
Crankshaft
Connecting rod b ig end sid
e
clearanoe
0 .10-0.30
mm
10.004-0.012
in)
0.40
mm
(0.016
in)
Runout
-
0.03
mm
10.001
in)
Crankpin oil clearance
-
1-.
(O.001'
-
0 .CM)20
in)
0.08
mm
10.003
in)
0.028-
0.052
mm
Main journal oil clearance
~.
028-O .052
mm
(0.0011-0 .0020
in)
0.08
mm
(0.003
in)
CVlinder
17;
..
70.10
mm
(2.76
in)
1.0
.
70.000 70.015
mm
(2
.755-
2.756
In)
Warpage
0.10
mm
(0.004
in)
PIston
Ring·to·groove
Top
0
.015-
0.045
mm
(0.0006-
0.0018
in)
0. 10
mm
10.004
in)
clearance
Second
0 .015-0.045
mm
(0.0006-
0.0018
in)
0.10
mm
10.004
in)
R ing end gap
T
o
p
0.10-
0 .30
mm
(0.004-0.012
In)
O.SO mm
(0.020
in)
rs;cond
0 .10-0.30
mm
(0.004-
0 .012
in)
0.50
mm
(0.020
in)
OU
(Side rail)
0
.30-
0.90
mm
(0.0
12-
0.035
in)
1.
T
mm
10.04
in)
Piston 0 .0
69.960 69.990
mm
12
.754-
2.755
in)
69.85
mm
(2.750
in)
Piston-to<ylinder clearance
0.01
-
0 .055
mm
(0.004-0.002
in
)
0 .10
mm
(0.004
in)
Piston p in bore
18.002-
18.008
mm
(0.7087-0.7090
in)
18.1
mm
10.71
inl
Piston pin 0 .0.
17 .994
18.000
mm
(0.7084 0.7086
in)
17.98
mm
(0.70
in)
Piston ·to·piston p in clearance
0.002-0.014
mm
(0.0001
-
0
.0006
in)
0.04
mm
(0.002
in)
Connecting rod small end 1.0
.
18
.016-
18 .034
mm
(0.7093-0.7100
in)
18.08
mm
(0 .712
in)
Pisto
n pintO<onnecting rod clearance
0.016-0.040
mm
(0.0006-
0 .0016
in)
0.060
mm
(0.0024
in)
.
Cam cha in
length at
13
kg
(29
Ib) tension
323 .85 324.30
mm
(12.750-
12.767
in)
326.120
mm
(12.84
in)
TORQUE
:
Crankpin
:
30-
34
N·m
(3
.0-
3.4
kg-m
,
22-
25
ft·lb)
TOOL
Special
Piston R ing Compressor
07954-
2830000
or Commercially available compressor (Automotive style)
Date of
Issue
:
October, 1982
to
HONDA MOTOR CO
.•
L TO
.
-
'"
12-1
-
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