Nissan Murano Z50 (2004 year). Manual — part 117
TIMING CHAIN
EM-75
C
D
E
F
G
H
I
J
K
L
M
A
EM
Revision: 2004 November
2004 Murano
e.
Tighten mounting bolts in numerical order as shown in the fig-
ure.
15. Install crankshaft pulley as follows:
a.
Install crankshaft pulley, taking care not to damage front oil seal.
●
When press-fitting crankshaft pulley with plastic hammer, tap on its center portion (not circumference).
b.
Fix crankshaft with pulley holder [SST: KV10109300 (
—
)].
c.
Tighten crankshaft pulley bolt.
d.
Put a paint mark on crankshaft pulley aligning with angle mark
on crankshaft pulley bolt. Then, further retighten bolt by 60
degrees. (Angle tightening)
16. Rotate crankshaft pulley in normal direction (clockwise when viewed from engine front) to confirm it turns
smoothly.
17. Install in the reverse order of removal after this step.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in the guide may
generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.
INSPECTION AFTER INSTALLATION
●
Before starting engine, check the levels of engine coolant, engine oil and working fluid. If less than
required quantity, fill to the specified level.
●
Use procedure below to check for fuel leakage.
–
Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–
Start engine. With engine speed increased, check again for fuel leakage at connection points.
●
Run engine to check for unusual noise and vibration.
●
Warm up engine thoroughly to make sure there is no leakage of engine coolant, engine oil, working fluid,
fuel and exhaust gases.
●
Bleed air from passages in pipes and tubes of applicable lines, such as in cooling system.
●
After cooling down engine, again check levels of engine coolant, engine oil and working fluid. Refill to the
specified level, if necessary.
Summary of the inspection items:
PBIC0918E
: 44.1 N·m (4.5 kg-m, 33 ft-lb)
SEM751G
Item
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
EM-76
TIMING CHAIN
Revision: 2004 November
2004 Murano
Engine oil
Level
Leakage
Level
Working fluid
Level
Leakage
Level
Fuel
—
Leakage
—
Exhaust gases
—
Leakage
—
CAMSHAFT
EM-77
C
D
E
F
G
H
I
J
K
L
M
A
EM
Revision: 2004 November
2004 Murano
CAMSHAFT
PFP:13001
Removal and Installation
ABS0032R
REMOVAL
1.
Remove engine assembly from vehicle, and separate front suspension member, transaxle and transfer
(AWD models) assembly from engine. Refer to
.
1.
Intake valve timing control solenoid
valve
2.
Gasket
3.
Camshaft bracket (No. 2 to 4)
4.
Seal washer
5.
Camshaft (EXH)
6.
Camshaft (INT)
7.
Camshaft bracket (No. 1)
8.
Dowel pin
9.
Valve lifter
10. O-ring
11.
Timing chain tensioner (secondary)
12. Spring
13. Plunger
14.
Cylinder head (right bank)
15. Cylinder head (left bank)
16. O-ring
17.
Camshaft position sensor (PHASE)
(right bank)
18.
Camshaft position sensor (PHASE)
(left bank)
PBIC2387E
EM-78
CAMSHAFT
Revision: 2004 November
2004 Murano
2.
Install engine sub-attachment with engine stand shaft [SST: KV10117001 (
—
) and KV10106500 (
—
)] to right side of cylinder block, then lift engine, and mount it onto engine stand [SST: ST0501S000
(
—
)]. Refer to
3.
Remove front timing chain case, camshaft sprocket, timing chain and rear timing chain case. Refer to
.
4.
Remove camshaft position sensor (PHASE) (right and left
banks) from cylinder head back side.
CAUTION:
●
Handle carefully to avoid dropping and shocks.
●
Do not disassemble.
●
Do not allow metal powder to adhere to magnetic part at
sensor tip.
●
Do not place sensors in a location where they are
exposed to magnetism.
5.
Remove intake valve timing control solenoid valves.
●
Discard intake valve timing control solenoid valve gaskets and
use new gaskets for installation.
6.
Remove camshaft brackets.
●
Mark camshafts, camshaft brackets and bolts so they are placed in the same position and direction for
installation.
●
Equally loosen camshaft bracket bolts in several steps in
reverse order as shown in the figure.
7.
Remove camshafts.
8.
Remove valve lifters.
KBIA1046E
SEM443GA
PBIC2050E
CAMSHAFT
EM-79
C
D
E
F
G
H
I
J
K
L
M
A
EM
Revision: 2004 November
2004 Murano
●
Identify installation positions, and store them without mixing them up.
9.
Remove chain tensioner (secondary) from cylinder head.
●
Remove timing chain tensioner (secondary) with its stopper
pin attached.
NOTE:
Stopper pin was attached when timing chain (secondary) was
removed.
INSPECTION AFTER REMOVAL
Camshaft Runout
1.
Put V-block on precise flat table, and support No. 2 and 4 journal
of camshaft.
CAUTION:
Do not support journal No. 1 (on the side of camshaft
sprocket) because it has a different diameter from the other
three locations.
2.
Set dial indicator 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
1.
Measure the camshaft cam height with micrometer.
2.
If wear is beyond the limit, replace camshaft.
Camshaft Journal Oil Clearance
CAMSHAFT JOURNAL DIAMETER
●
Measure the outer diameter of camshaft journal with microme-
ter.
SEM947G
Standard
: Less than 0.02 mm (0.001 in)
Limit
: 0.05 mm (0.002 in)
PBIC0929E
Standard cam height (intake and exhaust)
: 44.865 - 45.055 mm (1.7663 - 1.7738 in)
Cam wear limit
: 0.2 mm (0.008 in)
EMQ0072D
Standard:
No. 1
: 25.935 - 25.955 mm (1.0211 - 1.0218 in)
No. 2, 3, 4
: 23.445 - 23.465 mm (0.9230 - 0.9238 in)
PBIC0040E
EM-80
CAMSHAFT
Revision: 2004 November
2004 Murano
CAMSHAFT BRACKET INNER DIAMETER
●
Tighten camshaft bracket bolt with the specified torque. Refer to
for the tighten-
ing procedure.
●
Measure the inner diameter “A” of camshaft bracket with bore
gauge.
CAMSHAFT JOURNAL OIL CLEARANCE
●
(Oil clearance) = (Camshaft bracket inner diameter) – (Camshaft journal diameter).
●
If the calculated value exceeds the limit, replace either or both camshaft and cylinder head.
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
●
Install dial indicator in thrust direction on front end of camshaft.
Measure the end play of dial indicator when camshaft is moved
forward/backward (in direction to axis).
●
Measure the following parts if out of the limit.
–
Dimension “A” for camshaft No. 1 journal
–
Dimension “B” for cylinder head No. 1 journal bearing
●
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 4 journal of camshaft.
CAUTION:
Do not support journal No. 1 (on the side of camshaft sprocket) because it has a different diameter
from the other three locations.
Standard:
No. 1
: 26.000 - 26.021 mm (1.0236 - 1.0244 in)
No. 2, 3, 4
: 23.500 - 23.521 mm (0.9252 - 0.9260 in)
PBIC1645E
Standard:
No. 1
: 0.045 - 0.086 mm (0.0018 - 0.0034 in)
No. 2, 3, 4
: 0.035 - 0.076 mm (0.0014 - 0.0030 in)
Limit
: 0.15 mm (0.0059 in)
Standard
: 0.115 - 0.188 mm (0.0045 - 0.0074 in)
Limit
: 0.24 mm (0.0094 in)
SEM864E
Standard
: 27.500 - 27.548 mm (1.0827 - 1.0846 in)
Standard
: 27.360 - 27.385 mm (1.0772 - 1.0781 in)
KBIA2404J
CAMSHAFT
EM-81
C
D
E
F
G
H
I
J
K
L
M
A
EM
Revision: 2004 November
2004 Murano
2.
Measure the camshaft sprocket runout with dial indicator. (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
●
Measure the outer diameter at 1/2 height of valve lifter with
micrometer since valve lifter is in barrel shape.
VALVE LIFTER HOLE DIAMETER
●
Measure the inner diameter of valve lifter hole of cylinder head
with inside micrometer.
VALVE LIFTER CLEARANCE
●
(Valve lifter clearance) = (Valve lifter hole diameter) – (Valve lifter outer diameter)
●
If the calculated value is out of the standard, referring to each standard of valve lifter outer diameter and
valve lifter hole diameter, replace either or both valve lifter and cylinder head.
Limit
: 0.15 mm (0.0059 in)
PBIC0930E
KBIA0182E
Standard (Intake and exhaust)
: 33.977 - 33.987 mm (1.3377 - 1.3381 in)
JEM798G
Standard (Intake and exhaust)
: 34.000 - 34.016 mm (1.3386 - 1.3392 in)
SEM867E
Standard (Intake and exhaust)
: 0.013 - 0.039 mm (0.0005 - 0.0015 in)
EM-82
CAMSHAFT
Revision: 2004 November
2004 Murano
INSTALLATION
1.
Install timing chain tensioners (secondary) on both sides of cyl-
inder head.
●
Install timing chain tensioner with its stopper pin attached.
●
Install timing chain tensioner with sliding part facing down-
ward on right-side cylinder head, and with sliding part facing
upward on left-side cylinder head.
●
Install new O-rings as shown in the figure.
2.
Install valve lifters.
●
Install it in the original position.
3.
Install camshafts.
●
Install camshaft with dowel pin attached to its front end face
on the exhaust side.
●
Follow your identification marks made during removal, or fol-
low the identification marks that are present on new cam-
shafts for proper placement and direction.
●
Install camshaft so that dowel pin hole and dowel pin on front
end face are positioned as shown in figure. (No. 1 cylinder
TDC on its compression stroke)
NOTE:
●
Large and small pin holes are located on front end face of
camshaft (INT), at intervals of 180 degrees. Face small dia.
side pin hole upward (in cylinder head upper face direc-
tion).
●
Though camshaft does not stop at the portion as shown in
the figure, for the placement of cam nose, it is generally
accepted camshaft is placed for the same direction of the
figure.
SBIA0499E
KBIA1071E
Bank
INT/EXH
Dowel pin
Paint marks
ID mark
M1
M2
RH
INT
No
Pink
No
RE
EXH
Yes
No
Orange
RE
LH
INT
No
Pink
No
LH
EXH
Yes
No
Orange
LH
KBIA1009E
PBIC2478E
CAMSHAFT
EM-83
C
D
E
F
G
H
I
J
K
L
M
A
EM
Revision: 2004 November
2004 Murano
4.
Install camshaft brackets.
●
Remove foreign material completely from camshaft bracket
backside and from cylinder head installation face.
●
Install camshaft bracket in original position and direction as
shown in figure.
●
Install camshaft brackets (No. 2 to 4) aligning the stamp
marks as shown in the figure.
NOTE:
There are no identification marks indicating left and right for
camshaft bracket (No. 1).
●
Apply liquid gasket to mating surface of camshaft bracket (No.
1) as shown on right and left banks.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-47, "RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS"
SEM446G
PBIC2052E
PBIC2660E
EM-84
CAMSHAFT
Revision: 2004 November
2004 Murano
5.
Tighten camshaft bracket bolts in the following steps, in numeri-
cal order as shown in the figure.
a.
Tighten No. 7 to 10 in order as shown.
b.
Tighten No. 1 to 6 in order as shown.
c.
Tighten No. 1 to 10 in numerical order as shown.
d.
Tighten No. 1 to 6 in numerical order as shown.
e.
Tighten No. 7 to 10 in numerical order as shown.
CAUTION:
After tightening mounting bolts of camshaft brackets (No.
1), be sure to wipe off excessive liquid gasket from the
parts list below.
●
Mating surface of rocker cover
●
Mating surface of rear timing chain case
6.
Measure difference in levels between front end faces of No. 1
camshaft bracket (No. 1) and cylinder head.
●
Measure two positions (both intake and exhaust side) for a
single bank.
●
If the measured value is out of the standard, re-install cam-
shaft bracket (No. 1).
7.
Inspect and adjust the valve clearance. Refer to
8.
Install in the reverse order of removal after this step.
: 2.0 N·m (0.20 kg-m, 1 ft-lb)
: 2.0 N·m (0.20 kg-m, 1 ft-lb)
: 5.9 N·m (0.60 kg-m, 4 ft-lb)
: 10.4 N·m (1.1 kg-m, 8 ft-lb)
: 9.3 N·m (0.95 kg-m, 7 ft-lb)
PBIC2050E
Standard
: –0.14 to 0.14 mm (–0.0055 to 0.0055 in)
EMQ0044D
CAMSHAFT
EM-85
C
D
E
F
G
H
I
J
K
L
M
A
EM
Revision: 2004 November
2004 Murano
INSPECTION AFTER INSTALLATION
●
Before starting engine, check the levels of engine coolant, engine oil and working fluid. If less than
required quantity, fill to the specified level.
●
Use procedure below to check for fuel leakage.
–
Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–
Start engine. With engine speed increased, check again for fuel leakage at connection points.
●
Run engine to check for unusual noise and vibration.
●
Warm up engine thoroughly to make sure there is no leakage of engine coolant, engine oil, working fluid,
fuel and exhaust gases.
●
Bleed air from passages in pipes and tubes of applicable lines, such as in cooling system.
●
After cooling down engine, again check levels of engine coolant, engine oil and working fluid. Refill to the
specified level, if necessary.
Summary of the inspection items:
Valve Clearance
ABS003MI
INSPECTION
In cases of removing/installing or replacing camshaft and valve-
related parts, or of unusual engine conditions due to changes in
valve clearance (found malfunctions during stating, idling or causing
noise), perform inspection as follows:
1.
Remove rocker covers (right and left banks). Refer to
2.
Measure the valve clearance as follows:
a.
Set No. 1 cylinder at TDC of its compression stroke.
●
Rotate crankshaft pulley clockwise to align timing mark
(grooved line without color) with timing indicator.
Item
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Working fluid
Level
Leakage
Level
Fuel
—
Leakage
—
Exhaust gases
—
Leakage
—
SEM713A
SEM918G
EM-86
CAMSHAFT
Revision: 2004 November
2004 Murano
●
Make sure that intake and exhaust cam noses on No. 1 cylin-
der (engine front side of right bank) are located as shown in
the figure.
●
If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
b.
Use feeler gauge, measure the clearance between valve lifter
and camshaft.
*: Approximately 80
°
C (176
°
F) (Reference data)
●
By referring to the figure, measure the valve clearances at
locations marked “
×
” as shown in the table below (locations
indicated in the figure) with feeler gauge.
●
No. 1 cylinder at compression TDC
SEM418G
Valve clearance standard:
Cold
Intake
: 0.26 - 0.34 mm (0.010 - 0.013 in)
Exhaust
: 0.29 - 0.37 mm (0.011 - 0.015 in)
Hot*
Intake
: 0.304 - 0.416 mm (0.012 - 0.016 in)
Exhaust
: 0.308 - 0.432 mm (0.012 - 0.017 in)
SEM139D
KBIA0185E
Measuring position (right bank)
No. 1 CYL.
No. 3 CYL.
No. 5 CYL.
No. 1 cylinder at
compression TDC
EXH
×
INT
×
Measuring position (left bank)
No. 2 CYL.
No. 4 CYL.
No. 6 CYL.
No. 1 cylinder at
compression TDC
INT
×
EXH
×
PBIC2054E
CAMSHAFT
EM-87
C
D
E
F
G
H
I
J
K
L
M
A
EM
Revision: 2004 November
2004 Murano
c.
Rotate crankshaft by 240 degrees clockwise (when viewed from
engine front) to align No. 3 cylinder at TDC of its compression
stroke.
NOTE:
Crankshaft pulley mounting bolt flange has a stamped line every
60 degrees. They can be used as a guide to rotation angle.
●
By referring to the figure, measure the valve clearances at
locations marked “
×
” as shown in the table below (locations
indicated in the figure) with feeler gauge.
●
No. 3 cylinder at compression TDC
d.
Rotate crankshaft by 240 degrees clockwise (when viewed from
engine front) to align No. 5 cylinder at TDC of compression
stroke.
SEM751G
Measuring position (right bank)
No. 1 CYL.
No. 3 CYL.
No. 5 CYL.
No. 3 cylinder at
compression TDC
EXH
×
INT
×
Measuring position (left bank)
No. 2 CYL.
No. 4 CYL.
No. 6 CYL.
No. 3 cylinder at
compression TDC
INT
×
EXH
×
PBIC2055E
SEM751G
EM-88
CAMSHAFT
Revision: 2004 November
2004 Murano
●
By referring to the figure, measure the valve clearances at
locations marked “
×
” as shown in the table below (locations
indicated in the figure) with feeler gauge.
●
No. 5 cylinder at compression TDC
3.
For the measured value are out of the standard, perform adjustment below.
ADJUSTMENT
●
Perform adjustment depending on selected head thickness of valve lifter.
1.
Remove camshaft. Refer to
.
2.
Remove valve lifters at the locations that are out of the standard.
3.
Measure the center thickness of the removed valve lifters with
micrometer.
4.
Use the equation below to calculate valve lifter thickness for replacement.
Measuring position (right bank)
No. 1 CYL.
No. 3 CYL.
No. 5 CYL.
No. 5 cylinder at
compression TDC
EXH
×
INT
×
Measuring position (left bank)
No. 2 CYL.
No. 4 CYL.
No. 6 CYL.
No. 5 cylinder at
compression TDC
INT
×
EXH
×
PBIC2056E
KBIA0057E
Valve lifter thickness calculation:
t = t
1
+ (C
1
– C
2
)
t
= Valve lifter thickness to be replaced
t
1
= Removed valve lifter thickness
C
1
= Measured valve clearance
C
2
= Standard valve clearance:
Intake
: 0.30 mm (0.012 in)*
Exhaust
: 0.33 mm (0.013 in)*
*: Approximately 20
°
C (68
°
F)
CAMSHAFT
EM-89
C
D
E
F
G
H
I
J
K
L
M
A
EM
Revision: 2004 November
2004 Murano
●
Thickness of new valve lifter can be identified by stamp marks
on the reverse side (inside the cylinder).
Stamp mark 788U or 788R indicates 7.88 mm (0.3102 in) in
thickness.
NOTE:
Two types of stamp marks are used for parallel setting and for
manufacturer identification.
Available thickness of valve lifter: 27 sizes with range 7.88 to 8.40 mm (0.3102 to 0.3307 in) in steps of
0.02 mm (0.0008 in) (when manufactured at factory).
5.
Install selected valve lifter.
6.
.
7.
Manually turn crankshaft pulley a few turns.
8.
Make sure that the valve clearances for cold engine are within the specifications by referring to the speci-
fied values.
Valve clearance:
Unit: mm (in)
*: Approximately 80
°
C (176
°
F)
KBIA0119E
Cold
Hot * (reference data)
Intake
0.26 - 0.34 (0.010 - 0.013)
0.304 - 0.416 (0.012 - 0.016)
Exhaust
0.29 - 0.37 (0.011 - 0.015)
0.308 - 0.432 (0.012 - 0.016)
EM-90
OIL SEAL
Revision: 2004 November
2004 Murano
OIL SEAL
PFP:00100
Removal and Installation of Valve Oil Seal
ABS003MJ
REMOVAL
1.
Remove engine assembly from vehicle, and separate front suspension member, transaxle and transfer
(AWD models) assembly from engine. Refer to
2.
Install engine sub-attachment with engine stand shaft [SST: KV10117001 (
—
) and KV10106500 (
—
)] to right side of cylinder block, then lift engine, and mount it onto engine stand [SST: ST0501S000
(
—
)]. Refer to
3.
Remove camshaft relating to valve oil seal to be removed. Refer to
4.
Remove valve lifters. Refer to
5.
Turn crankshaft until the cylinder requiring new oil seals is at TDC. This will prevent valve from dropping
into cylinder.
6.
Remove valve collet.
●
Compress valve spring with valve spring compressor, attach-
ment, adapter [SST]. Remove valve collet with magnet hand.
CAUTION:
When working, take care not to damage valve lifter holes.
7.
Remove valve spring retainer and valve spring.
8.
Remove valve oil seal using valve oil seal puller [SST].
INSTALLATION
1.
Apply new engine oil on new valve oil seal joint and seal lip.
2.
Using valve oil seal drift [SST], press fit valve seal to height “H”
shown in figure.
NOTE:
Dimension “H”: Height measured before valve spring seat instal-
lation
3.
Install in the reverse order of removal after this step.
PBIC1803E
PBIC0884E
Intake and exhaust
: 14.3 - 14.9 mm (0.563 - 0.587 in)
PBIC0802E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст