Nissan Qashqai J11. Manual — part 65
CAMSHAFT
EM-199
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
b.
Apply liquid gasket
to camshaft bracket as shown in the fig-
ure.
Use Genuine Liquid Gasket (Three Bond 1217H) or equiva-
lent.
c.
Tighten mounting bolts of camshaft brackets in the following
steps, in numerical order as shown in the figure.
• There are two types of mounting bolts. Refer to the following
for locating bolts.
i.
Tighten mounting bolts in numerical order.
ii.
Tighten mounting bolts in numerical order.
iii.
Tighten mounting bolts in numerical order.
CAUTION:
After tightening mounting bolts of camshaft brackets, be sure to wipe off excessive liquid gasket
from the mating surface of cylinder head.
4.
Install the camshaft sprocket to the camshaft with the following procedure.
: Plug hole inner wall
:
φ
3.4 - 4.4 mm (0.134 - 0.173 in)
: Engine front
: Engine outside
JPBIA4410ZZ
: Engine front
M6 bolts [thread length: 57.5 mm (2.264 in)]
: 13, 14, and 15 in the figure
M6 bolts [thread length: 35.0 mm (1.378 in)]
: Except the above
: 1.96 N·m (0.20 kg-m, 17 in-lb)
: 5.88 N·m (0.60 kg-m, 52 in-lb)
: 9.5 N·m (0.97 kg-m, 84 in-lb)
JPBIA4406ZZ
EM-200
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR20DD]
CAMSHAFT
a.
When the camshaft sprocket (INT)
and camshaft sprocket
(EXH)
is removed, refer to the paint mark
put according to
step “3”. Securely align the knock pin and the pin hole, and then
install them.
b.
Tighten bolts in the following steps.
• Secure the hexagonal part of camshaft using wrench to tighten mounting bolt.
i.
Tighten camshaft mounting bolt.
ii.
Turn 30 degrees clockwise (angle tightening).
CAUTION:
Check the tightening angle by using an angle wrench [SST:
KV10112100] (B) or protractor. Never judge by visual
inspection without an angle wrench.
5.
Install timing chain and related parts. Refer to
.
6.
Inspect and adjust valve clearance. Refer to
EM-133, "Inspection and Adjustment"
7.
Install remaining parts in the reverse order of removal.
Inspection
INFOID:0000000010715504
INSPECTION AFTER REMOVAL
Camshaft Runout
1.
Put V-block on a precise flat table, and support No. 2 and 5 journal of camshaft.
CAUTION:
Never support No. 1 journal (on the side of camshaft sprocket) because it has a different diameter
from the other four locations.
2.
Set dial indicator (A) vertically to No. 3 journal.
3.
Turn camshaft to one direction with hands, and measure the
camshaft runout on dial indicator. (Total indicator reading)
4.
If it exceeds the limit, replace camshaft.
Camshaft Cam Height
: Camshaft bracket
JPBIA4404ZZ
: 35.0 N·m (3.6 kg-m, 26 ft-lb)
: Camshaft sprocket
: Camshaft hexagonal part
JPBIA4412ZZ
Standard and Limit
: Refer to
.
JSBIA2445ZZ
CAMSHAFT
EM-201
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
1.
Measure the camshaft cam height with a micrometer (A).
2.
If it exceeds the limit, replace camshaft.
Camshaft Journal Oil Clearance
CAMSHAFT JOURNAL OUTER DIAMETER
Measure the outer diameter of camshaft journal with a micrometer
(A).
CAMSHAFT BRACKET INNER DIAMETER
• Tighten camshaft bracket bolts with specified torque. Refer to
EM-197, "Removal and Installation"
• Measure the inner diameter of camshaft bracket with a cylinder
gauge .
CAMSHAFT JOURNAL OIL CLEARANCE
• (Oil clearance) = (Camshaft bracket inner diameter) – (Camshaft journal diameter)
• If it exceeds the limit, replace camshaft or cylinder head, or both.
NOTE:
Camshaft bracket cannot be replaced as a single part, because it is machined together with cylinder head.
Replace whole cylinder head assembly.
Camshaft End Play
1.
Install camshaft in cylinder head. Refer to
EM-197, "Removal and Installation"
.
Standard and Limit
: Refer to
.
JPBIA6382ZZ
Standard
: Refer to
JPBIA6337ZZ
: Measuring direction of inner diameter
Standard
: Refer to
PBIC3180J
Standard and Limit
: Refer to
.
EM-202
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR20DD]
CAMSHAFT
2.
Install dial indicator in thrust direction on front end of camshaft.
Read the end play of dial indicator
when camshaft is moved
forward/backward (in direction to axis).
• Measure the following parts if out of the standard.
- Dimension (A) for groove of cylinder head No. 1 journal
- Dimension (B) for camshaft flange
• Refer to the standards above, and then replace camshaft and/
or cylinder head.
Camshaft Sprocket Runout
1.
Put V-block on precise flat table, and support No. 2 and 5 journals of camshaft.
CAUTION:
Never support No. 1 journal (on the side of camshaft sprocket) because it has a different diameter
from the other four locations.
2.
Measure the camshaft sprocket runout with a dial indicator (A).
(Total indicator reading)
• If it exceeds the limit, replace camshaft sprocket.
Valve Lifter
Check if surface of valve lifter has any wear or cracks.
• If anything above is found, replace valve lifter. Refer to
.
Valve Lifter Clearance
VALVE LIFTER OUTER DIAMETER
Standard and Limit
: Refer to
.
PBIC3181J
Standard
: 4.000 - 4.030 mm (0.1575 - 0.1587 in)
Standard
: 3.877 - 3.925 mm (0.1526 - 0.1545 in)
PBIC3183J
Limit
: Refer to
.
JPBIA4413ZZ
KBIA0182E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст