Nissan March K13. Manual — part 282
EM-62
< REMOVAL AND INSTALLATION >
[HR12DE]
CAMSHAFT
11. Install timing chain (1) by aligning its matching mark (marked
when timing chain is removed) (B) with matching mark (periph-
eral stamp line) (A) on camshaft sprocket (INT) (2).
12. Install camshaft brackets (No. 2 to 4) aligning the identification
marks on upper surface as shown in the figure.
• Install so that identification mark can be correctly read when
viewed from the INT side.
13. Tighten mounting bolts of camshaft brackets in the following
steps, in numerical order as shown in the figure.
a.
Tighten No. 7 to 9 in numerical order.
b.
Tighten No. 1 to 6 in numerical order.
c.
Tighten all bolts in numerical order.
d.
Tighten all bolts in numerical order.
14. Install the camshaft (EXH) to the camshaft sprocket (EXH) (2)
while aligning the matching mark (marked when timing chain is
removed) (A) and the matching mark (stamp) (B) of camshaft
sprocket (EXH).
• If the positions of knock pin and pin groove are not aligned,
move the camshaft (EXH) slightly to correct these positions.
PBIC3702E
A
: EXH side
B
: INT side
: Engine front
JPBIA3368ZZ
A
: EXH side
B
: INT side
: Engine front
: 2.0 N·m (0.2 kg-m, 1 ft-lb)
: 2.0 N·m (0.2 kg-m, 1 ft-lb)
: 5.9 N·m (0.6 kg-m, 4 ft-lb)
: 10.4 N·m (1.1 kg-m, 8 ft-lb)
1
: Timing chain
3
: Camshaft sprocket (INT)
C
: Matching mark (peripheral stamp line)
JPBIA3369ZZ
PBIC3674E
CAMSHAFT
EM-63
< REMOVAL AND INSTALLATION >
[HR12DE]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
15. Tighten the mounting bolt.
CAUTION:
• Hold the camshaft hexagonal part (A), and then secure the
camshaft.
• Check that the matching mark (marked when timing chain
is removed) and each camshaft sprocket matching mark
are in the correct location.
16. Pull out the stopper pin (A), and then apply the tension to the
timing chain by rotating the crankshaft pulley clockwise slightly.
17. Install the plug (2) to the front cover (1).
• Apply liquid gasket to the threads, and tighten them.
Use Genuine Liquid Gasket or equivalent.
18. Return the camshaft sprocket (INT) in the most retarded position with the following procedure.
a.
Remove the stopper pin (A) from the camshaft sprocket (INT).
1
: Camshaft sprocket (EXH)
JPBIA3397ZZ
1
: Plunger
2
: Chain tensioner
B
: Lever
C
: Lever hole
D
: Front cover has been omitted
PBIC3772E
PBIC3675E
B
: Tape
PBIC3685E
EM-64
< REMOVAL AND INSTALLATION >
[HR12DE]
CAMSHAFT
b.
Turn the crankshaft pulley (1) slowly clockwise (A) and return
the camshaft sprocket (INT) to the most retarded angle position.
• When first turning the crankshaft the camshaft sprocket (INT)
will turn. Once it is turned more, and the vane (camshaft) also
turns, then it has reached the most retarded angle position.
• The most retarded angle position can be checked by seeing if
the stopper pin groove (A) is shifted clockwise.
• After spinning the crankshaft slightly in the counterclockwise
direction, you can check the lock pin has joined by seeing if
the vane (camshaft) and the sprocket move together.
19. Install the camshaft position sensor (PHASE) to the rear end of cylinder head.
• Tighten bolts with it seated completely.
20. Check and adjust valve clearance. Refer to
EM-11, "Inspection and Adjustment"
21. Install in the reverse order of removal.
Inspection
INFOID:0000000005988197
INSPECTION AFTER REMOVAL
Oil Filter
• Check that there is no foreign material on the oil filter (1) and check
it for clogging.
• Check the oil filter for damage.
• If there is some damage, replace the oil filter, the plug, and the
washer as a set.
Camshaft Runout
1.
Put V-block on a precise flat table, and support No. 2 and 5 jour-
nals 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 a dial indicator vertically to No. 3 journal.
3.
Turn camshaft to one direction with hands, and measure the
camshaft runout on the dial indicator. (Total indicator reading)
PBIC3704E
B
: Stopper pin hole
C
: Most advanced angle
D
: Lock pin engaged
PBIC3705E
PBIC3693E
JPBIA3410ZZ
CAMSHAFT
EM-65
< REMOVAL AND INSTALLATION >
[HR12DE]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
4.
If it exceeds the limit, replace camshaft.
Camshaft Cam Height
1.
Measure the camshaft cam height with a micrometer (A).
2.
If wear exceeds the limit, replace camshaft.
Camshaft Journal Oil Clearance
CAMSHAFT JOURNAL DIAMETER
Measure the outer diameter of camshaft journal with a micrometer
(A).
CAMSHAFT BRACKET INNER DIAMETER
• Tighten camshaft bracket bolts with the specified torque. Refer to “INSTALLATION” for the tightening proce-
dure.
• Measure inner diameter (B) of camshaft bracket with a bore gauge
(A).
CAMSHAFT JOURNAL OIL CLEARANCE
• (Oil clearance) = (Camshaft bracket inner diameter) – (Camshaft journal diameter)
• If it exceeds the limit, replace either or both camshaft and cylinder head.
NOTE:
Camshaft brackets cannot be replaced as single parts, because they are machined together with cylinder
head. Replace whole cylinder head assembly.
Camshaft End Play
Standard and Limit
: Refer to
.
Standard and Limit
Intake
: Refer to
Exhaust
Cam wear limit:
: Refer to
PBIC3178J
Standard:
: Refer to
.
PBIC3179J
Standard
: Refer to
.
PBIC3180J
Standard and Limit
: Refer to
.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст