Infiniti QX4 (R50). Manual — part 419
SEM948E
Replacement
NBEM0015
CAUTION:
When removing the oil pans, oil pump assembly and timing
chain from engine, first remove the camshaft position sensor
(PHASE), CVTC sensor and the crankshaft position sensors
(REF)/(POS) from the assembly.
Be careful not to damage sensor edges.
VALVE OIL SEAL
NBEM0015S01
1.
Remove timing chain. Refer to “Removal, EM-23.
2.
Remove
camshaft
brackets
and
camshaft.
Refer
to
“Disassembly”, EM-41.
3.
Remove valve lifters and shims.
4.
Remove valve spring with Tool.
5.
Reinstall any parts removed in reverse order of removal.
Before removing valve spring, fix valve as follows.
Method A:
Piston concerned should be set at TDC to prevent valve
from falling.
SEM826E
Method B:
Remove spark plug, then install air hose adapter into
spark plug hole and apply air pressure to hold valves in
place. Apply a pressure of 490 kPa (5 kg/cm
2
, 71 psi).
SEM983D
Method C:
Install spark plug with suitable washer into spark plug
hole from combustion chamber side.
SEM827E
6.
Remove valve oil seal.
GI
MA
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
OIL SEAL
Replacement
EM-35
SEM828E
7.
Apply engine oil to new valve oil seal and install it with Tool.
SEM715A
OIL SEAL INSTALLATION DIRECTION
NBEM0015S02
I
Install new oil seal in the direction shown in the figure.
FRONT OIL SEAL
NBEM0015S03
1.
Remove the following parts:
I
Engine undercover
I
Suspension member stay
I
Drive belts
I
Crankshaft position sensor (REF)
Be careful not to damage sensor edge.
I
Crankshaft pulley
I
Radiator
I
Cooling fan
SEM829E
2.
Remove front oil seal using a suitable tool.
Be careful not to scratch front cover.
3.
Apply engine oil to new oil seal and install it using a suitable
tool.
SEM830E
REAR OIL SEAL
NBEM0015S04
1.
Remove transmission. Refer to AT-277, “Removal”.
2.
Remove drive plate.
3.
Remove oil pan. Refer to EM-15.
4.
Remove rear oil seal retainer.
OIL SEAL
Replacement (Cont’d)
EM-36
SEM831E
5.
Remove old liquid gasket using scraper.
I
Remove old liquid gasket from the bolt hole and thread.
SEM832EA
6.
Apply liquid gasket to rear oil seal retainer.
GI
MA
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
OIL SEAL
Replacement (Cont’d)
EM-37
Components
NBEM0016
SEM441GA
1.
Oil filler cap
2.
Rocker cover
3.
Camshaft bracket
4.
Camshaft
5.
PCV valve
6.
Cylinder head
7.
Blow-by hose
8.
Spark plug
9.
Valve
10. Valve spring seat
11. Valve spring
12. Valve spring retainer
13. Valve collet
14. Valve lifter
15. Shim
16. Chain tensioner
17. Spring
18. Tensioner sleeve
19. CVTC valve
CYLINDER HEAD
Components
EM-38
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст