Table of Contents
Advertisement
9. CYLINDER HEAD/VALVES
SERVICE INFORMATION
GENERAL
9-1
9-2
9-3
9-3
9-7
9-11
CAMSHAFT INSTALLATION
9-12
9-14
9-15
9-17
9-20
• The cylinder heads can be removed without removing the engine.
• Camshaft lubricating oil is fed through an oil pass pipe. Be sure the holes in the oil pass bolts are not clogged.
• During assembly apply MOS2 paste grease to the camshaft holders, camshaft journals of the cylinder head, rocker arm
shafts, rocker arm slipper faces and valve stems to provide initial lubrication.
SPECIFICATIONS
Unit: mm (in)
•
ITEM
STANDARD
SERVICE LIMIT
Compression pressure
1,324
±
196
kPa
- -
(13.5
±
2.0
kg/cm
2 ,
192
±
28
psi)
Camshaft
Cam lobe height
IN
38.189 (1.5035)
38.17 (1.503)
EX
38.213 (1.5044)
38.19 (1.504)
Journal 0.0.
21.959-21.980 (0.8645-0.8654)
21.95 (0.864)
Runout
0.030 (0.0012)
0.05 (0.002)
Oil clearance
0.040-0.093 (0.0015-0.0037)
0.11 (0.004)
Rocker arm
Rocker arm
I.
D.
IN/EX
12.000-12.018 (0.4724-0.4731)
12.03 (0.474)
Rocker arm shaft
IN/EX
11.966-11.984 (0.4711-0.4718)
11.96 (0.471)
0.0.
Valve and
Valve stem 0.0.
IN
5.475- 5.490 (0.2156-0.2161)
5.47 (0.215)
valve guide
EX
6.555-6.570 (0.2580-0.2587)
6.55 (0.258)
Valve guide 1.0.
IN
5.500-5.512 (0.2165-0.2170)
5.53 (0.218)
EX
6.600-6.615 (0.2598-0.2604)
6.66 (0.262)
Stem-to-guide
IN
0.010-0.037 (0.0004-0.0015)
0.07 (0.003)
clearance
EX
0.030-0.060 (0.0014-0.0024)
0.11 (0.004)
Valve seat width
0.9-1.1 (0.035-0.043)
1.5 (0.06)
Valve guide pro-
IN
19.4-19.6 (0.76-0.77)
- -
jection height
EX
17.9-18.1 (0.70-0.71)
- -
Valve spring
Free length
OUTER
IN
42.14 (1.659)
40.58 (1.598)
EX
42.83 (1.686)
41.25 (1.624)
INNER
IN
38.11 (1.500)
36.47 (1.436)
EX
38.81 (1.765)
37.51 (1.477)
Cylinder head warpage
- -
0.10 (0.004)
9-1
Advertisement
Chapters
Table of Contents
Troubleshooting
