Advertisement
SERVICE INFORMATION
GENERAL
CYLINDER HEADIV ALVEI CAMSHAFT
•
This section covers service of the rocker arms,
cylinder
head,
valves
and camshaft. These services can be done with the
engine
installed in the frame.
•
When disassembling, mark and store
the
disassembled parts to ensure that they are reinstalled in
their
original
loca-
tions.
•
Clean alt disassembled parts with cleaning solvent and dry them by
blowing
them off with compressed air before
inspection.
•
Rocker arm, valve and
camshaft
lubricating
oil is
fed through oil passages
in
the
cylinder
head
and head cover. Clean
the oil passages before
assembling
cylinder head and head cover.
•
Be
careful
not to damage the mating surfaces
when
removing the cylinder head cover and cylinder head.
SPECIFICATIONS
ITEM
_ _ _ _
"
...
i.uiin~
it:
mm
(in)
STANDARD: -
SERVICE
LlMiT
~
Cylinder compression at 450 rpm
(min-'
)
Valve
clearance
-
+"608-
902 kPa
(6.2-9.2
kgf/cm2,
8
i0
8
CC<
1 '>31.--j--'= = =
="'---I
psi)
--l=~IN
~
:-~0.15
(0.006)
EX
0.23 (0.009)
Valve,
valve
guide
Vel·v
c
e
" "'
.,
"' e=
m
"
O"'.o
'
.
- - - + -
cI"' N
c - - - h
5 . 475
-
5.490
(0.2
156
0.2"1'"6'1
'
I
---+'5
'
.4"5
"
(0.215~
I
Valve
guide
1.0.
i
Stem-fo-guide clearance
Valve guide projection
above
cylinder
head
Valve seat width
I
Valve spring
Free
length
Rocker arm
Arm
I.D.
Shaft 0.0.
EX
5 455 - 5 470
(0
2148
-
0.2154)
5.43
(0.
214
~
IN/EX
IN
EX
IN
EX
IN/EX
Inner
Outer
IN/EX
IN/EX
5.500
-
5.512 (0.2165-
0.010 0.037
(0.0004 -
0.030 0.057
(0.0012
15.8
-
16.2 (0.62 0.64
1
18.8-19.2
(0.74
0.76)
1.0 -
1.1
(0.039 0.043)
38.82
(1.528)
51.17
(2.015)
0.2170)
5.53 (0.218)
0.0015)
0.12
(0.005~
0.0022)
0.14
(0.006)
1.4 (0.06)
37.8
(1.49)
49.0
(1.93)
12.000
12.018
(0.472
4
-
0.4731)
12.05
(0.474)
11.964
11.984
(0.4710
-
0.4718)
11.92
(0.469)
Camshaft and
cam
follower
r
Arm-to-Shaft:,~I~ee:,:
e
~
n ,
: e:=hiS
' ~N
~
/
E
: X
~
riO!.O!
'
6;~O~.O~54~IO~.O~O~O~6~O~
.
~ OO~
2
:
'~
I
~~E~=O~.~08~(0
.
003.,1
",-1
Cam lobe height
~
33.9602 - 34.1202
(1.33701 -1.34331)
33.790 (1.3303)
EX
34.1959
- 34.3559
(1.34629 -
1.35259)
.
33.946 (1.3365)
Cam follower
O,
. . <-D.
'
--_
_
---;-c
IN/EX
22.467
-
22.482 (0.8845 - 0.88-5
..
1f-
1
_
_
~
'
-.;';;;'".
4
7i
6 (0.884)
Follower
bore
CO.
IN/EX
22.510
-
22.526
(0.8862 -
0.8868)
22.54
(0.887) 1
Follower-Io-bore clear-
IN/EX
0.028 - 0.059 (0.0011
-
0.0023)
0.07 (0.003)
l
ance
Cylinder head warpage
0.10
(0.004)
TORQUE VALUES
Cylinder head cover
cap
nut
Upper engine hanger bracket
nu1
Upper engine hanger bracket
bolt
Engine
coolant
temperature
(ECT)
sensor
Spark plug
(frame side)
(engi
ne
side)
53 N'm
(5.4
kgf·m, 39 Ibf·h)
54
N·m
(5.5
kgf·m, 40 Ibf·h)
32 N·m (3.3 kgf·m, 24 Ibf·h)
10 N·m
(1.0 kgf·m,
7 Ibf·ft)
22 N'm (2.2 kgf·m, 16Ibf·h)
Apply oil to the threads and seat-
ing
surface
Apply sealant
to the
threads
8-3
Advertisement
