Nissan Altima L32. Instruction — part 657
EM-164
< ON-VEHICLE REPAIR >
[VQ35DE]
TIMING CHAIN
12. Place paint marks on the timing chain and sprockets to indicate
the correct position of the components for installation.
13. Remove the internal chain guide and slack guide.
14. Remove the timing chain tensioner.
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 tensioner 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 side
chain guide.
d. Keep the slack side chain 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.
15. Remove primary timing chain and crankshaft sprocket.
CAUTION:
After removing timing chain, do not turn the crankshaft and
camshaft separately, or the valves will strike the pistons.
SEM740G
SEM732G
SEM733G
TIMING CHAIN
EM-165
< ON-VEHICLE REPAIR >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
16. Attach a suitable stopper pin to the right and left camshaft chain
tensioners (for secondary timing chains).
17. Remove the intake and exhaust camshaft sprocket bolts.
• Apply paint to the timing chain and camshaft sprockets for
alignment during installation.
• Secure the hexagonal portion of the camshaft using a wrench
to loosen the bolts.
18. Remove the secondary timing chains with camshaft sprockets.
a. Rotate camshaft slightly, and slacken timing chain of timing
chain tensioner -side.
b. Insert metal or resin plate [0.5 mm (0.020 in)] into guide between
timing chain and chain tensioner plunger. Remove cam sprocket
and secondary timing chain with timing chain removed from
guide groove.
CAUTION:
Chain tensioner plunger can move, while stopper pin is
inserted in tensioner. Plunger can come out of tensioner
when timing chain is removed. Use caution during removal.
• Intake camshaft sprocket is two-for-one structure of primary
and secondary sprockets.
• Handle the intake sprockets as an assembly.
CAUTION:
• Avoid impact or dropping the intake sprockets.
• Do not disassemble the intake sprockets (never loosen
bolts (A) and (B) as shown).
19. Remove the chain tension guide.
20. Remove the rear timing chain case, if necessary. Refer to
EM-173, "Removal and Installation"
.
SEM923G
WBIA0172E
SEM922G
SEM734G
EM-166
< ON-VEHICLE REPAIR >
[VQ35DE]
TIMING CHAIN
21. Use a scraper to remove all of the old Silicone RTV Sealant from
the front timing chain case and opposite mating surfaces.
CAUTION:
Do not damage the mating surfaces.
22. Remove all old Silicone RTV Sealant from all the bolt holes and
bolts.
CAUTION:
Do not damage the threads or mating surfaces.
23. Remove the front oil seal from the front timing chain case using
a suitable tool.
CAUTION:
Do not damage the front cover.
Inspection
INFOID:0000000004202169
Check for cracks and any excessive wear of the timing chain. Replace the timing chain as necessary.
Installation
INFOID:0000000004202170
NOTE:
The figure shows the relationship between the mating mark on each timing chain and that on the correspond-
ing sprocket, the components installed.
SEM428G
SEM161F
SEM829E
TIMING CHAIN
EM-167
< ON-VEHICLE REPAIR >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
1. Install the rear timing chain case, if removed. Refer to
EM-173, "Removal and Installation"
.
2. Install the timing chain tension guide.
3. Position the crankshaft so No. 1 piston is set at TDC on the com-
pression stroke.
• Make sure that the dowel pin hole, dowel pin and crankshaft
key are located as shown.
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 RH bank.
CAUTION:
Hole on small diameter side must be used for intake camshaft sprocket dowel pin. Do not misiden-
tify (ignore big diameter side).
WBIA0280E
1.
Internal chain guide
2.
Camshaft sprocket (intake)
3.
Mating mark (pink link)
4.
Mating mark (punched)
5.
Secondary timing chain tensioner
6.
Mating mark (orange link)
7.
Secondary timing chain
8.
Camshaft sprocket (exhaust)
9.
Tension 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
KBIA1073E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст