Nissan Altima HL32 Hybrid. Manual - part 385

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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.

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

18. 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.

19. 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. 

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

suitable tool. Loosen the balancer sprocket bolt.

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

crankshaft sprocket.

23. Loosen bolts in order as shown, and remove balancer unit.

• Use Torx socket (size E14)

CAUTION:

• Do not disassemble balancer unit.

INSPECTION AFTER REMOVAL

Timing Chain

KBIA0049E

PBIC5314E

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TIMING CHAIN

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Check the timing chain for cracks or excessive wear. If a defect is

detected, replace it.

Balancer Unit Bolt Outer Diameter

• Measure outer diameters (d1, d2) at the two positions as shown.

• Measure d2 within the range A.

• If the value difference (d1 - d2) exceeds the limit, replace it with a

new one.

INSTALLATION

NOTE:

• There may be two color variations of the link marks (link colors) on the timing chain. 

• There are 26 links between the gold/yellow mating marks on the timing chain; and 64 links between the cam-

shaft sprocket gold/yellow link and the crankshaft sprocket orange/blue link, on the timing chain side without

the tensioner.

1. Make sure the crankshaft key points straight up.
2. Install the balancer unit and tighten the bolts in the numerical

order as shown:

CAUTION:

• When reusing a bolt, check its outer diameter before

installation. Follow the Balancer Unit Bolt Outer Diameter

procedure.

• Apply new engine oil to threads and seating surfaces of

bolts.

• Check tightening angle with an angle wrench (A) or a pro-

tractor. Do not make judgment by visual check alone.

PBIC0282E

Limit 

: 0.15 mm (0. 0059 in) or more

KBIA0126E

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Tool number

: KV10112100 (BT-8653-A)

Balancer unit bolts
Step 1
Bolts 1-5

: 42 N·m (4.3 kg-m, 31 ft-lb)

Bolt 6

: 36 N·m (3.7 kg-m, 27 ft-lb)

Step 2
Bolts 1-5

: 120

° + 5°

Bolt 6

: 90

° + 5°

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TIMING CHAIN

3. Install the crankshaft sprocket and timing chain for the balancer

unit.

• Make sure that the crankshaft sprocket is positioned with mat-

ing marks on the block and sprocket meeting at the top.

• Install it by lining up mating marks on each sprocket and timing

chain. 

4. Install timing chain tensioner (for balancer unit) (1).

• Fix the plunger at the most compressed position using a stop-

per pin (A), and then install it.

• Securely pull out (

) the stopper pin after installing the timing

chain tensioner (for balancer unit).

• Check matching mark position of balancer unit drive chain and

each sprocket again.

5. Install timing chain and related parts.

• Install by lining up mating marks on each sprocket and timing

chain as shown.

• Before and after installing timing chain tensioner, check again

to make sure the mating marks have not slipped.

• After installing timing chain tensioner, remove the stopper pin,

and make sure that the tensioner moves freely.

CAUTION:

• For the following note, after the mating marks are aligned,

keep them aligned by holding them by hand.

• To avoid skipped teeth, do not move crankshaft and cam-

shaft until front cover is installed.

NOTE:

Before installing chain tensioner, it is possible to change the

position of mating mark on timing chain for that of each sprocket

for alignment.

Step 3 (Loosen in reverse 
order or tightening)

: 0 N·m (0 kg-m, 0 ft-lb)

Step 4
Bolts 1-5

: 42 N·m (4.3 kg-m, 31 ft-lb)

Bolt 6

: 36 N·m (3.7 kg-m, 27 ft-lb)

Step 5
Bolts 1-5

: 120

° + 5°

Bolt 6

: 90

° + 5°

KBIA0123E

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TIMING CHAIN

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6. Install new front oil seal to front cover, using suitable tool

• Install new oil seal in until it is flush with front end surface of

front cover.

CAUTION:

• Do not reuse oil seal.

• Be careful not to cause damage to circumference of oil

seal.

7. Install front cover with the following procedure:
a. Install O-rings (B) to cylinder head and cylinder block. 
b. Apply Genuine Silicone RTV Sealant or equivalent, to positions

(A) specified as shown. Refer to 

GI-15, "Recommended Chemi-

cal Products and Sealants"

. 

c. Make sure the mating marks on the timing chain and each

sprocket are still aligned. Then install the front cover.

CAUTION:

• Be careful not to damage the front oil seal during installa-

tion with the front end of the crankshaft.

d. Tighten front cover bolts in the numerical order as shown.
e. After all bolts are tightened, retighten them to the specified

torque.

CAUTION:

Wipe off any excess sealant leaking at the surface for

installing the oil pan.

8. Install the chain guide between the camshaft sprockets.

SBIA0266E

Sealant diameter (C)

: 3.9 mm (0.154 in)

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Front cover bolts
Bolts (A)

: 49 N·m (5.0 kg-m, 36 ft-lb)

Bolts (B)

: 12.7 N·m (1.3 kg-m, 9 ft-lb)

Bolts (C)

: 12.7 N·m (1.3 kg-m, 9 ft-lb)

Bolts (D)

: 49 N·m (5.0 kg-m, 36 ft-lb)

(E)

Dowel pins

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