Nissan Pathfinder (2011 year). Instruction — part 369
TIMING CHAIN
EM-63
< REMOVAL AND INSTALLATION >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
After removing timing chain (primary), do not turn crankshaft and camshaft separately, or valves
will strike the piston heads.
8. Remove crankshaft sprocket, if necessary.
9. Remove timing chain (secondary) and camshaft sprockets as follows:
a. Attach stopper pin to the right and left timing chain tensioners
(secondary).
NOTE:
• Use stopper pin included with Tool J-50246.
b. Remove camshaft sprocket (INT and EXH) bolts.
c. Remove timing chain (secondary) together with camshaft sprockets.
• Turn camshaft slightly to secure slack of timing chain on timing chain tensioner (secondary) side.
• Insert 0.5 mm (0.020 in)-thick metal or resin plate between tim-
ing chain and timing chain tensioner plunger (guide). Remove
timing chain (secondary) together with camshaft sprockets
with timing chain loose from guide groove.
CAUTION:
Be careful of plunger coming off when removing timing
chain (secondary).
NOTE:
Camshaft sprocket (INT) is a one piece integrated design with
sprockets for timing chain (primary) and for timing chain (sec-
ondary).
• When handling camshaft sprocket (INT), be careful of the fol-
lowing:
CAUTION:
• Handle carefully to avoid any shock to camshaft
sprocket.
• Do not disassemble. (Do not loosen bolts (A) as shown).
NOTE:
For removal of timing chain tensioner (secondary), refer to
70, "Removal and Installation (Secondary Timing Chain Ten-
. [Removing camshaft bracket (No. 1) is required.]
INSPECTION AFTER REMOVAL
Check for cracks and any excessive wear at link plates. Replace
chain if necessary.
• Inspect all timing chains and associated parts for wear or damage,
replace as necessary.
INSTALLATION
PBIC2047E
PBIC1978E
PBIC2920E
PBIC0282E
2011 Pathfinder
EM-64
< REMOVAL AND INSTALLATION >
[VQ40DE]
TIMING CHAIN
NOTE:
The figure above shows the relationship between the mating mark on each timing chain and that on the corre-
sponding sprocket, with the components installed.
1. Make sure that dowel pin hole, dowel pin of camshaft and crank-
shaft key are located as shown. (No. 1 cylinder at compression
TDC)
•
NOTE:
Though camshaft does not stop at the position as shown, for
the placement of cam nose, it is generally accepted camshaft
is placed for the same direction of the figure.
2. Install timing chains (secondary) and camshaft sprockets as follows:
CAUTION:
Mating marks between timing chain and sprockets slip easily. Confirm all mating mark positions
repeatedly during the installation process.
1.
Internal chain guide
2.
Camshaft sprocket (intake)
3.
Mating mark (blue link)
4.
Mating mark (punched)
5.
Secondary timing chain tensioner
6.
Mating mark (copper link)
7.
Secondary timing chain
8.
Camshaft sprocket (exhaust)
9.
Tensioner guide
10. Water pump
11. Crankshaft sprocket
12. Mating mark (notched)
13. Primary timing chain
14. Slack guide
15. Primary timing chain tensioner
16. Mating mark (back side)
17. Crankshaft key
Camshaft dowel pin hole (intake side)
: At cylinder head upper face side in each bank.
Camshaft dowel pin (exhaust side)
: At cylinder head upper face side in each bank.
Crankshaft key
: At cylinder head side of right bank.
AWBIA1011GB
KBIA1073E
2011 Pathfinder
TIMING CHAIN
EM-65
< REMOVAL AND INSTALLATION >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
a. Push plunger of timing chain tensioner (secondary) and keep it
pressed in with stopper pin.
• Use stopper pin included with Tool J-50246.
b. Before installing timing chains (secondary) and camshaft
sprockets, confirm mating marks are visible. If necessary, use
paint or equivalent to re-mark the camshaft sprockets at each
mating mark.
c. Install timing chains (secondary) (8) and camshaft sprockets
[INT (1) and EXH (9)].
• Left bank mating marks (6)
• Align the timing chain mating marks (secondary) (2) (blue
color link) with the ones on camshaft sprockets (INT and EXH)
(4), (5), (7) and (10) (punched), and install them.
NOTE:
• Mating marks for camshaft sprocket (INT) are on the back
side of camshaft sprocket (secondary).
• There are two types of mating marks, circle (7), (10) and
oval (4), (5) types. They should be used for the right and left
banks, respectively.
• Align dowel pin (3) and pin hole on camshafts with the groove
(11) and dowel pin on sprockets, and install them.
• On the intake side, align pin hole on the small diameter side of
the camshaft front end with dowel pin (3) on the back side of
camshaft sprocket, and install them.
• On the exhaust side, align dowel pin on camshaft front end
with pin groove (11) on camshaft sprocket, and install them.
• In case that positions of each mating mark and each dowel pin
do not fit on mating parts, make fine adjustment to the position by slightly turning camshaft(s).
• Bolts for camshaft sprockets must be tightened in the next step. Tightening them by hand is enough to
prevent the dislocation of dowel pins.
d. Confirm the mating marks are aligned, then finger tighten camshaft sprocket bolts. Final tightening will be
done with all timing chains installed.
SEM430G
SEM811G
Right bank
: Use circle type (7) and (10).
Left bank
: Use oval type (4) and (5).
WBIA0689E
2011 Pathfinder
EM-66
< REMOVAL AND INSTALLATION >
[VQ40DE]
TIMING CHAIN
e. Remove stopper pins out from timing chain tensioners (second-
ary).
3. Install timing chain (primary) as follows:
a. Install crankshaft sprocket.
• Make sure the mating marks on crankshaft sprocket face the
front of engine.
b. Install the primary timing chain.
• Water pump (G).
• Install primary timing chain so the mating mark punched (B) on
camshaft sprocket is aligned with the blue link (A) on the tim-
ing chain, while the mating mark notched (E) on the crankshaft
sprocket (D) is aligned with the copper link (F) on the timing
chain, as shown.
• When it is difficult to align mating marks (A) with (B) and (E)
with (F) of the primary timing chain with each sprocket, gradu-
ally turn the camshaft to align it with the mating marks.
• During alignment, be careful to prevent dislocation of mating
mark alignments of the secondary timing chains.
PBIC2110E
SEM929E
WBIA0721E
2011 Pathfinder
TIMING CHAIN
EM-67
< REMOVAL AND INSTALLATION >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
4. Install internal chain guide.
• If removed, reinstall slack guide.
CAUTION:
Do not overtighten slack guide bolts. It is normal for a gap
to exist under the bolt seats when bolts are tightened to
specification.
• Remove stopper pin from primary timing chain tensioner.
5. Make sure again that the mating marks on camshaft sprockets and timing chain have not slipped out of
alignment.
6. Tighten camshaft sprocket bolts to specification with all timing chains installed and Ring Gear Stopper
Tool holding the crankshaft.
7. Install front timing chain case. Refer to
EM-53, "Removal and Installation"
INSPECTION AFTER INSTALLATION
• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to
MA-18, "FOR USA AND CANADA : Fluids and Lubricants"
(United
States and Canada) and
MA-20, "FOR MEXICO : Fluids and Lubricants"
(Mexico).
• 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 leak-
age 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.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and 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.
PBIC2109E
PBIC2633E
Tool number
: — (J-48761)
2011 Pathfinder
EM-68
< REMOVAL AND INSTALLATION >
[VQ40DE]
TIMING CHAIN
• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec-
ified level, if necessary.
• Summary of the inspection items:
*Power steering fluid, brake fluid, etc.
Item
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Transmission/
transaxle fluid
A/T and CVT Models
Leakage
Level/Leakage
Leakage
M/T Models
Level/Leakage
Leakage
Level/Leakage
Other oils and fluids*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
Exhaust gas
—
Leakage
—
2011 Pathfinder
TIMING CHAIN TENSIONER
EM-69
< REMOVAL AND INSTALLATION >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
TIMING CHAIN TENSIONER
Exploded View
INFOID:0000000006708627
Removal and Installation (Primary Timing Chain Tensioner)
INFOID:0000000006708628
REMOVAL
1. Remove engine room cover. Refer to
EM-25, "Removal and Installation"
2. Remove engine under cover. Refer to
EXT-15, "Removal and Installation"
.
3. Partially drain engine coolant. Refer to
CO-13, "Changing Engine Coolant"
4. Remove lower fan shroud. Refer to
.
5. Disconnect crankcase ventilation hose and remove air duct and resonator assembly. Refer to
6. Disconnect MAF sensor and remove air cleaner case (upper). Refer to
EM-26, "Removal and Installation"
.
7. Remove coolant reservoir hose.
8. Disconnect upper radiator hose from radiator.
9. Disconnect and remove engine cooling fan (Motor driven type). Refer to
CO-22, "Removal and Installation
.
10. Remove upper fan shroud. Refer to
.
11. Remove drive belt. Refer to
EM-14, "Removal and Installation"
.
12. Remove drive belt auto-tensioner. Refer to
EM-15, "Drive Belt Auto Tensioner and Idler Pulley"
.
13. Remove chain tensioner cover.
14. Remove timing chain tensioner (primary) as follows:
AWBIA0859GB
1.
Internal chain guide
2.
O-ring
3.
Timing chain tensioner (secondary) (RH)
4.
Camshaft sprocket (EXH)
5.
Timing chain (secondary)
6.
Timing chain (primary)
7.
Camshaft sprocket RH (INT)
8.
Camshaft sprocket LH (INT)
9.
Slack guide
10. Timing chain tensioner (primary)
11. Crankshaft sprocket
12.
Timing chain tensioner (secondary) (LH)
13. O-ring
14. Tension guide
2011 Pathfinder
EM-70
< REMOVAL AND INSTALLATION >
[VQ40DE]
TIMING CHAIN TENSIONER
a. Loosen clip of timing chain tensioner (primary), and release
plunger stopper (1).
b. Depress plunger into tensioner body by pressing slack guide (2).
c.
Keep slack guide pressed and insert stopper pin through the
tensioner body hole and plunger groove (3) to hold plunger in.
• Use stopper pin included with Tool J-50246.
d. Remove timing chain tensioner bolts and remove timing chain
tensioner (primary).
CAUTION:
Be careful not to drop timing chain tensioner bolts inside
timing chain case.
INSTALLATION
Installation is in the reverse order of removal.
• When installing timing chain tensioner (primary), push in plunger and keep it pressed in with stopper pin.
• Remove any dirt and foreign materials completely from the back and the mounting surfaces of primary tim-
ing chain tensioner.
• After installation, pull out stopper pin.
Removal and Installation (Secondary Timing Chain Tensioner)
INFOID:0000000006708629
REMOVAL
1. Remove the timing chains (primary) and (secondary). Refer to
EM-61, "Removal and Installation"
.
2. Remove the rocker covers. Refer to
EM-43, "Removal and Installation"
3. Remove the camshaft brackets (No. 1). Refer to
EM-78, "Removal and Installation"
.
4. Remove the secondary timing chain tensioners.
INSTALLATION
Installation is in the reverse order of removal.
Removal and Installation (Secondary Timing Chain Tensioner Shoe)
INFOID:0000000006708630
REMOVAL
1. Remove the timing chains (secondary). Refer to
EM-70, "Removal and Installation (Secondary Timing
.
PBIC2835E
PBIC2836E
2011 Pathfinder
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст