Cylinder Head/Val Ve - Honda C8R600F4 Service Manual

8. CYLINDER HEAD/VAL VE
SERVICE INFORMATION
8-1 VALVE GUIDE REPLACEMENT 8-12
TROUBLESHOOTING
8-2 VALVE SEAT INSPECTION/REFACING 8-13
CYLINDER COMPRESSION
CYLINDER HEAD COVER REMOVAL
CAMSHAFT REMOVAL
CYLINDER HEAD REMOVAL
CYLINDER HEAD DISASSEMBLY
SERVICE INFORMATION
GENERAL
8-3 CYLINDER HEAD ASSEMBLY
8-3 CYLINDER HEAD INSTALLATION
8-4 CAMSHAFT INSTALLATION
8-7 CYLINDER HEAD COVER
INSTALLATION
8-8
•This section covers service of the camshafts, cylinder head and valves.
•The camshafts, cylinder head and valves can be serviced with the engine installed In the frame.
8-16
8-17
8·19
8-21
•When disassembling, mark and store the disassembled parts to ensure that they are reinstalled in their original locations.
•Clean all disassembled parts with cleaning solvent and dry them by blowing them off with compressed air before
inspection.
•Camshaft lubricating oil is fed through oil passages in the cylinder head. Clean the oil passages before assembling
cylinder head.
•Be careful not to damage the mating surfaces when removing the cylinder head cover and cylinder head.
SPECIFICATIONS
Unit: mm (in)
ITEM
STANDARD SERVICE LIMIT
Cylinder compression at 350 rom
1,226 kPa ( 12.5 kaf/cm
2 ,
178 osi)
- -
Valve clearance
IN
0.20
±
o.o3·fo.oo8
±
0.001)
I
FX
0.28
t
0.01 (0 011 ± 0.001)
- -
Camshaft Cam 49 state/Canada
IN
!
36.600-36.760 (1.4409-1.4472) 36.57 (1.440)
lobe
_!y_Ee
EX 35.380-35.540 (1.3929 1.3992) 35.35 ( 1.392)
height California type
IN
34.640-34.720 (1.3638-1.3669) 34.61 (1.363)
EX 33.920-34.000 (1.3354-1.3386) 33.89 11.334)
Runout
- -
0.05 (0.002)
Oil clearance
0.020-0.062 (0.0008-0.0024) 0.10 (0.004)
Valve lifter
Valve lifter O.D.
25.978-25.993 (1.0228-1.0233) 25.97 (1.022)
Valve lifter bore 1.0. 26.010·-26.026 (1.0240-1.0246)
26.04 (1.025)
Valve,
Valve stem O.D.
IN
3.975-3.990 (0.1565-0.1571) 3.965 (0.1561)
valve guide
EX
3.965-3.980 (0.1561-0.1567) 3.955 (0.1557)
Valvo quide l.D. IN/EX
I
~.000-~.012
(0.1675-0.1580) ~-0~ (0.159)
Stem-to-guide clearance
IN
0.010-0.037 (0.0004-0.0015)
··-·
I
0.075 (0.0030)
EX
0.020-0.047 (0.0008-0.0019) 0.085 (0.0033)
Valve guide projection
IN
16.1
16.4 (0.63-0.65)
above cylinder head
l:X 14.3-14.6 (0.56-0.bl)
Valve seat width IN/EX
0.90-1.10 (0.035-0.043) 1.5 (0.06)
Valve spring
I
Free length
I
IN 39.87 (1.570) 38.27 (1.507)
EX 36.23 (1.426) 34.73 (1.367)
Cylinder head warpage
0.10 (0.004)
8-1