Section
01 V-810 ENGINE
Subsection
05
(CYLINDER AND HEAD)
ROCKER ARM SHAFT DIAMETER
Minimum New
12.000 mm (.4724 in)
Maximum New
12.018 mm (.4731
in)
Service limit
11.990 mm (.4720 in}
Any area worn excessively will require parts re
placement.
Installation
NOTE:
Use the same procedure for exhaust and
intake rocker arm.
Apply engine oil on rocker arm shaft.
Install the rocker arm shafts with the chamfered
edge first and use following procedure:
- insert a rocker arm pin through rocker arm pin
bore
install a thrust washer no.
8
then the proper
rocker arm no.
6
(exhaust side) or no.
7
(intake
side)
push in rocker arm shaft until its chamfer reach
es the end of rocker arm bore
1.
Rocker arm shaft
2.
Thrust washer {timing chain side}
3.
Thrust washer {spark plug side}
- place the other thrust washer no.
8
and push
rocker arm shaft to end position
- Install the camshaft retaining plate no.
22.
TIMING CHAIN
Refer to
BOTTOM END,
see
TIMING CHAIN.
40
CYLINDER HEAD
Removal
The removal procedure is the same for both cylin
der heads no.
18
(front) and no.
19
(rear).
Turn crankshaft to ignition TDC, see
CRANK
SHAFT LOCKING PROCEDURE
and
CAMSHAFT
TIMING PROCEDURE
above.
Drain coolant (refer to
COOLING SYSTEfv1).
NOTE:
Before removing cylinder head, blow out
remaining coolant by air pressure. During cylinder
head removal, the remaining coolant in cylinder
head could overflow into the engine and a little
quantity of coolant could drop into the engine. In
this case, the engine oil will be contaminated.
Disconnect:
- spark plug wire
- temperature sensor connector. located at rear
cylinder head
- camshaft sensor, located at front cylinder head.
Remove:
- both side panels and both inner fenders (refer
to
BODY)
- exhaust pipe spring
- exhaust pipe nuts
- radiator inlet hose
- air filter box and throttle body
air intake manifold
- chain tensioner (see
CHAIN TENSIONER
above)
- valve cover and profile gasket (see
VALVE COV-
ER
above)
- camshaft timing gear
- cylinder head screws M6. no.
24
- cylinder head screws M
10,
no.
23
retaining
cylinder head and cylinder to cylinder base.
vmr2006-043
1
Cylinder head screws
M10
2
Cylinder head screws
M6
Pull up cylinder head.
Remove:
- chain guide no.
5
- cylinder head gasket no.
25
and scrap it.
4
1.
Cylinder head
2.
1immg chain
3.
Cham guide
4.
Cylinder head gasket
Inspection
Inspect timing chain guide for wear, cracks or oth
er damages. Replace if necessary.
Check for cracks between valve seats. if so. re
place cylinder head.
Check mating surface between cylinder and cylin
der head for contamination. If so. clean both sur
faces.
Clean oil support through the cylinder head from
contamination.
vmr2006-043
Section
01 V-810 ENGINE
Subsection
05
(CYLINDER AND HEAD)
1.
Oil port to lubricate camshaft lobes intake/exhaust
2.
Oil supply to camshaft bearing journal timing cham side
3.
Oil supply to camshaft bearing journal spark plug side
Installation
NOTE:
The cylinder heads are not identical in de
sign. Do not invert the cylinder heads at assem
bly.
For installation, reverse the removal procedure.
Pay attention to the following details.
Ensure dowel pins no. 26 are in place.
CAUTION:
Chain guide has to be fixed between
cylinder and cylinder head.
1.
Chain guide (fixed between cylinder and cylinder head)
2.
Chain tensioner gwde (mounted in crankcase}
Install a new cylinder head gasket no.
25.
First, torque cylinder head screws M
1 O,
no.
23
in
criss-cross sequence to
20
N•m
(15
l
bf
•
ft
)
then
finish tightening by applying the recommended
torque indicated 1n the exploded view.
Install cylinder head screws
M6,
no.
24.
41
