Infiniti I30 (A33). Manual — part 482
SEM892E
2.
Before installing cam bracket, remove old liquid gasket from
mating surface using a scraper.
3.
Remove O-rings from cylinder block.
SEM875E
4.
Turn crankshaft until No. 1 piston is set at approximately 240°
before TDC on compression stroke to prevent interference of
valves and pistons.
SEM876E
5.
Install cylinder heads with new gaskets.
I
Do not rotate crankshaft and camshaft separately, or
valves will strike piston heads.
SEM957E
CAUTION:
Cylinder head bolts are tightened by plastic zone tightening
method. Whenever the size difference between d1 and d2
exceeds the limit, replace them with new ones.
Limit (d1 − d2):
0.11 mm (0.0043 in)
I
Lubricate threads and seat surfaces of the bolts with new
engine oil.
GI
MA
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
CYLINDER HEAD
Installation (Cont’d)
EM-47
SEM879EA
I
Tightening procedure:
a.
Tighten all bolts to 98 N·m (10 kg-m, 72 ft-lb).
b.
Completely loosen all bolts.
c.
Tighten all bolts to 34 to 44 N·m (3.5 to 4.5 kg-m, 25 to 33
ft-lb).
d.
Turn all bolts 90 to 95 degrees clockwise.
e.
Turn all bolts 90 to 95 degrees clockwise.
SEM877EA
SEM878EA
I
Tighten in numerical order shown in the figure.
SEM490F
6.
Install camshaft chain tensioners on both sides of cylinder
head.
SEM652F
7.
Install exhaust and intake camshafts and camshaft brackets.
I
Intake camshaft has a drill mark on camshaft sprocket
mounting flange. Install it on the intake side.
CYLINDER HEAD
Installation (Cont’d)
EM-48
SEM653F
I
Identification marks are present on camshafts.
Bank
INT/EXH
ID mark
Drill mark
Paint mark
M1
M2
RH
INT
R3
Yes
Yes
No
EXH
R3
No
No
Yes
LH
INT
L3
Yes
Yes
No
EXH
L3
No
No
Yes
SEM888EA
I
Position camshaft
RH exhaust camshaft dowel pin at about 10 o’clock
LH exhaust camshaft dowel pin at about 2 o’clock
SEM884EB
8.
Before installing camshaft brackets, apply sealant to mating
surface of No. 1 journal head.
I
Use Genuine RTV silicone sealant Part No. 999MP-A7007
or equivalent.
I
Refer to “POSITION FOR APPLYING LIQUID GASKET”,
EM-20.
I
Install camshaft brackets in their original positions.
I
Tighten camshaft bracket bolts gradually in two or three
stages.
I
If any part of valve assembly or camshaft is replaced,
check valve clearance according to reference data.
After completing assembly check valve clearance. Refer
to “CHECKING” and “ADJUSTING” in “Valve Clearance”,
EM-51 and 53.
Reference data valve clearance (Cold):
Intake
0.26 - 0.34 mm (0.010 - 0.013 in)
Exhaust
0.29 - 0.37 mm (0.011 - 0.015 in)
I
Lubricate threads and seat surfaces of camshaft bracket
bolts with new engine oil before installing them.
SEM188F
I
Align stamp mark as shown in the figure.
GI
MA
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
CYLINDER HEAD
Installation (Cont’d)
EM-49
SEM885EA
SEM886EA
I
Tighten the camshaft brackets in the following steps.
Step
Tightening torque
Tightening order
1
1.96 N·m (0.2 kg-m, 17 in-lb)
Tighten in the order of 7 to 10,
then tighten 1 to 6.
2
6 N·m (0.6 kg-m, 52 in-lb)
Tighten in the numerical order.
3
9.02 - 11.8 N·m (0.92 - 1.20 kg-m,
79.9 - 104.2 in-lb)
Tighten in the numerical order.
SEM887E
9.
Install O-rings to cylinder block.
10. Apply sealant to the hatched portion of rear timing chain case.
I
Apply continuous bead of liquid gasket to mating surface of
rear timing chain case.
Refer to “POSITION FOR APPLYING LIQUID GASKET”,
EM-20.
I
Before installation, wipe off the protruding sealant.
CYLINDER HEAD
Installation (Cont’d)
EM-50
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст