Nissan Maxima. Instruction — part 544
EM-64
< REMOVAL AND INSTALLATION >
TIMING CHAIN
TIMING CHAIN
Exploded View
INFOID:0000000009466035
Removal and Installation
INFOID:0000000009466036
CAUTION:
• After removing timing chains, do not turn the crankshaft and camshaft separately, or the valves will
strike the pistons.
• When installing camshafts, chain tensioners, oil seals, or other sliding parts, lubricate contacting
surfaces with new engine oil.
• Apply new engine oil to bolt threads and seat surfaces when installing camshaft sprockets, camshaft
brackets, and crankshaft pulley.
REMOVAL
1. Remove front timing chain case. Refer to
EM-54, "Removal and Installation"
2. Remove the intake manifold collector. Refer to
EM-25, "Removal and Installation"
.
3. Remove the engine oil dipstick.
4. Place paint marks on the timing chain and sprockets to indicate the correct position of the components for
installation.
5. Remove the timing chain tensioner (primary).
1.
Timing chain tensioner (secondary) 2.
Internal chain guide
3.
Timing chain tensioner (sec-
ondary)
4.
Camshaft sprocket (EXH)
5.
Timing chain (secondary)
6.
Timing chain (primary)
7.
Camshaft sprocket (INT)
8.
Camshaft sprocket (INT)
9.
Timing chain (secondary)
10. Camshaft sprocket (EXH)
11. Slack guide
12. Crankshaft sprocket
13. Tension guide
AWBIA0838GB
TIMING CHAIN
EM-65
< REMOVAL AND INSTALLATION >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
a. Pull lever down and release plunger stopper tab. Plunger stop-
per tab can be pushed up to release (coaxial structure with
lever).
b. Insert stopper pin into timing chain tensioner (primary) body hole
to hold lever, and keep the tab released. An Allen wrench [1.2
mm (0.047 in)] is used for a stopper pin as an example.
c. Insert plunger into tensioner body by pressing the slack guide.
d. Keep the slack guide pressed and hold it by pushing the stopper
pin through the lever hole and body hole.
e. Remove the bolts and remove the timing chain tensioner (pri-
mary).
6. Remove the internal chain guide (1), and slack guide (2).
7. Remove timing chain (primary) and crankshaft sprocket.
CAUTION:
After removing timing chains, do not turn the crankshaft and camshaft separately, or the valves
will strike the pistons.
SEM732G
SEM733G
JPBIA0086ZZ
EM-66
< REMOVAL AND INSTALLATION >
TIMING CHAIN
8. Attach a suitable stopper pin (2) to the right and left timing chain
tensioners (secondary) (1).
9. Remove the timing chains (secondary) with camshaft sprockets (INT) and (EXH).
a. Insert metal or resin plate [0.5 mm (0.020 in)] into guide between timing chain (secondary) and timing
chain tensioner (secondary) plunger. Remove camshaft sprocket and timing chain (secondary) with timing
chain removed from guide groove.
CAUTION:
Timing chain tensioner plunger can move while stopper pin is inserted in timing chain tensioner.
Plunger can come out of tensioner when timing chain is removed. Use caution during removal.
• Apply paint marks to the timing chain and camshaft sprockets for alignment during installation.
b. Remove the camshaft sprocket (INT) and (EXH) bolts.
• Secure the hexagonal portion of the camshaft using a wrench
to loosen the bolts.
• Handle the sprockets as an assembly.
c.
Remove timing chains (secondary).
CAUTION:
• Avoid impact or dropping the camshaft sprockets.
• Do not disassemble the camshaft sprockets (do not
loosen bolts (A) and (B) as shown).
10. Remove the tension guide.
INSPECTION
Check for cracks and any excessive wear of the timing chain. Replace the timing chain as necessary.
INSTALLATION
NOTE:
The figure shows the relationship between the mating mark on each timing chain and that on the correspond-
ing sprocket with the components installed.
(A) : Bank 1
(B) : Bank 2
JPBIA0087ZZ
KBIA4379J
JPBIA0096ZZ
TIMING CHAIN
EM-67
< REMOVAL AND INSTALLATION >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
1. Install the tension guide.
2. Position the crankshaft so No. 1 piston is set at TDC on the com-
pression stroke.
NOTE:
• Make sure that the dowel pins (A) and crankshaft key (1) are
located as shown.
• Camshaft dowel pin (INT): at cylinder head upper face side in
each bank.
• Camshaft dowel pin (EXH): at cylinder head upper face side in
each bank.
• Crankshaft key: at cylinder head side of RH bank.
3. Install the timing chains (secondary) and camshaft sprockets.
CAUTION:
Matching marks between the timing chain and sprockets
slip easily. Confirm all matching mark positions repeatedly
during the installation process.
• Push the sleeve of the chain tensioner (secondary) and keep it
pressed in with a stopper pin.
1.
Internal chain guide
2.
Camshaft sprocket (INT)
3.
Mating mark (pink link)
4.
Mating mark (punched)
5.
Timing chain tensioner (secondary) 6.
Mating mark (orange link)
7.
Timing chain (secondary)
8.
Camshaft sprocket (EXH)
9.
Tension guide
10. Water pump
11. Crankshaft sprocket
12. Mating mark (notched)
13. Timing chain (primary)
14. Slack guide
15. Timing chain tensioner (primary)
16. Mating mark (back side)
17. Crankshaft key
WBIA0280E
JPBIA0094ZZ
SEM430G
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст