Nissan Altima L32. Manual - part 629

EM-52

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TIMING CHAIN

TIMING CHAIN

Removal and Installation

INFOID:0000000004202125

CAUTION:

Apply new engine oil to parts as indicated in the illustration before installation.

REMOVAL

1. Support the engine and transaxle assembly with suitable tools.

1.

O-rings

2.

Camshaft sprocket (INT)

3.

Camshaft sprocket (EXH)

4.

Chain tensioner

5.

Spring

6.

Chain tensioner plunger

7.

Timing chain slack guide

8.

Timing chain

9.

Front cover

10. Chain guide

11. IVT solenoid valve

12. IVT cover

13. Crankshaft pulley bolt

14. Crankshaft pulley 

15. Front oil seal

16. Balancer unit timing chain tensioner

17. Oil pump drive spacer

18. Crankshaft sprocket

19. Timing chain tension guide

20. Balancer unit timing chain

21. Balancer unit

22. Balancer unit sprocket

A.

Follow the installation procedure

AWBIA0592GB

TIMING CHAIN

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2. Remove RH splash shield.
3. Remove the upper and lower oil pan, and oil strainer. Refer to 

EM-32, "Removal and Installation"

.

4. Remove generator. Refer to 

CHG-27, "Removal and Installation"

.

5. Remove engine cover.
6. Disconnect variable timing control solenoid harness connector.
7. Remove engine ground.
8. Remove the coolant overflow reservoir tank. 
9. Position the RH engine compartment fuse and relay box aside.
10. Remove the RH engine mount and bracket. Refer to 

EM-72, "Removal and Installation"

.

11. Loosen bolts in the numerical order as shown. 

a.

Remove the IVT (intake valve timing) control cover using Tool.

12. Pull chain guide between camshaft sprockets out through front cover.

13. Set the No.1 cylinder at TDC on the compression stroke with the

following procedure: 

a. Rotate the crankshaft pulley clockwise and align the mating

marks to the timing indicator on the front cover.

ALBIA0194ZZ

Tool number

: KV10111100 (J-37228)

WBIA0475E

KBIA0190E

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TIMING CHAIN

b. At the same time, make sure that the mating marks on the cam-

shaft sprockets are lined up as shown.

• If not lined up, rotate the crankshaft pulley one more turn to

line up the mating marks to the positions as shown.

14. Remove crankshaft pulley with the following procedure:
a. Hold the crankshaft pulley using suitable tool, then loosen the

crankshaft pulley bolt, and pull the pulley out about 10 mm (0.39

in).

b. Attach suitable pulley puller in the M 6 (0.24 in diameter) thread

hole on crankshaft pulley, and remove crankshaft pulley using a

suitable puller. 

15. Remove the front cover with the following procedure:
a. Loosen the bolts in the numerical order as shown, and remove

them.

b. Remove the front cover.

CAUTION:

• Be careful not to damage the mounting surface.

16. Remove front oil seal using suitable tool, if necessary. 

KBIA0115E

KBIA0077E

KBIA0078E

ALBIA0198ZZ

TIMING CHAIN

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17. Remove timing chain with the following procedure:
a. Push in the tensioner plunger. Insert a stopper pin into the hole

on the tensioner body to secure the chain tensioner plunger and

remove chain tensioner.

• Use a wire of 0.5 mm (0.02 in) diameter as a stopper pin.

b. Remove the timing chain.

c. Secure hexagonal part of the camshaft with a wrench and

loosen the camshaft sprocket bolt and remove the camshaft

sprocket for both camshafts.

CAUTION:

• Do not rotate the crankshaft or camshafts while the timing

chain is removed. It can cause damage to the valve and

piston.

18. Remove the chain slack guide, tension guide, timing chain, and oil pump drive spacer.

19. Press stopper tab (A) in the direction shown to push the timing

chain slack guide (B) toward timing chain tensioner (for balancer

unit) (1).

• The slack guide (B) is released by pressing the stopper tab

(A). As a result, the slack guide (B) can be moved.

20. Insert stopper pin (D) into tensioner body hole (C) to secure tim-

ing chain slack guide (B).

NOTE:

Use a hard metal pin with a diameter of approximately 1.2 mm

(0.047 in) as a stopper pin. 

21. Remove timing chain tensioner (for balancer unit) (1).
22. Secure width across flats of the balancer LH side shaft using a

suitable tool. Loosen the balancer sprocket bolt.

23. Remove balancer unit timing chain, balancer unit sprocket and

crankshaft sprocket.

KBIA0048E

KBIA0049E

PBIC5314E