Crankshaft/Piston - Honda CX650C 1983 Shop Manual

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SERVICE INFORMATBOM 12-1 CRANK PlN BEARING lNSPECTlON/
1
I
TROUBLESHOOTING
12--2
SELECTION
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CONNECTING
ROD REMOVAL
MAIN JOURNAL BEARING
lNSPECTt ONISELECTION
PISTON REMOVAL
CY LlNDER INSPECTION
CRANKSHAFT REMOVAL
CRANKSHAFT INSTALLATION
12--5 PISTON lNSTALLASlON
12-6
CONNECTING ROB INSTALLATION 12-18
1
1
CYLINDER COMPRESSION 12-19
1
SERVICE INFORMATION
GENERAL
@
All bearing inserts are a select f i t and are identified by color codes. Select replacement bearing from the color code table.
After installing new bearings, recheck them with plastigauge.
*
Before removing the piston and connecting rod assemblies, clean the top of the cylinder of carbon deposits.
@
The right piston can be serviced by removing the oil pump and transmission cover. To service the leftpiston, i t is necessary
to remove the transmission.
,a,pp(y molybdenum dis~ilfide grease to the journals, crankpins and bearings during assembly.
Unit: mm (in)
. . . p - - p - . - -
STANDARD
-
- - . - - . - . p - -
0.020-0.060 (0.0008-0.0024)
Crank pin oil clearance 0.028-0.052 (0.001 1-0.0020)
!
Connecting rod side clearance 0.1 50-0.350 (0.0059-0.014)
Cylinder
/
82.500-82.51 5 (3.2480-3.2486)
/
Warpage
1 1
0.10 (0.004)
1
Piston ring Ring-to-groove
pp
0.02 5-0.050 (0.0006-0.0020)
1
- . - p - p - . -
0.10 (0.004)
clearance
Second
0.01 5-0.050 (0.0006-0.0020) 0.10 (0.004)
0.20-0.35 (0.008--0.014)
p p .
. .
0.20-0.35 (0.008-0.014)
- . . . - . . . - p - . . - - p - - - - - - - -
Oil (side rail) 0.30-0.90 (0.01 2-0.035) 1 .'l0 (0.043)
- - + - -
" -
---
h i s t o n ,
,
Piston O.D.
Piston pin
~iitonpin-~~
Piston pin O.D.
20.994-22.000 (0.8265-0.8268)
. . . . . . . - - - p - - . - . - p p - . .
. -
. p - - -
20.984 (0.8261
)
21.020-21.041 (0.8276-0.8284)
p . . . . . . . - - p - - . . - . . - - . - - - - . . . - - -
- - . - p - - - -
-
--
21.068 (0.8294)
Piston-to-cylinder clearance --
0.10 (0.004)
TORQUE VALUES
Crankshaft cap bolt
Connecting rod cap nut
Primary drive gear bolt
20-24 N * m (2.0-2.4 kg-m, 14-17 ft-lb)
42-45 N - m (4.1-4.5 kg-m, 30-31 ft-lb)
80-95 N a m (8.0-9.5 kg-m, 58-69 ft-lb)
Bate
of Issue:
December,
1982
O HQNDA MOTOR CO., LTD.