Nissan Frontier. Manual - part 715

TIMING CHAIN

EM-49

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Check timing chain for cracks and any excessive wear at the roller

links of timing chain. Replace timing chain if necessary.

Balancer Unit Bolt Outer Diameter

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

• If reduction appears in (A) range, regard it as (d2).

• If it exceeds the limit (large difference in dimensions), replace bal-

ancer unit bolt with a new one.

Balancer Unit Bolt Length

Measure balancer unit bolt length. If it exceeds the limit, replace balancer unit bolt with a new one.

INSTALLATION

NOTE:

The figure shows the relationship between the mating mark on each

timing chain and that on the corresponding sprocket, with the com-

ponents installed.
1. Make sure that crankshaft key points straight up.

2. Install O-ring to balancer unit.

CAUTION:

Do not reuse O-ring.

PBIC0282E

Limit [(d1) – (d2)]

: 0.15 mm (0.0059 in)

PBIC1137E

Limit

: 172 mm (6.77 in)

PBIC3029E

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TIMING CHAIN

3. Tighten bolts in numerical order as shown with the following pro-

cedure to install balancer unit, using Tool.

CAUTION:

If bolts are re-used, check their outer diameter before instal-

lation. Follow the "Balancer Unit Bolt Outer Diameter" pro-

cedure.

CAUTION:

• Check tightening angle using Tool or a protractor. Do not

make judgment by visual check alone.

• In step 3, loosen bolts in reverse order as shown.

NOTE:

Apply new engine oil to threads and seat surfaces of bolts.

4. Install crankshaft sprocket, balancer unit sprocket and balancer

unit timing chain.

• Make sure that crankshaft sprocket is positioned with mating

marks on cylinder block and crankshaft sprocket meeting at

the top.

• Install it by aligning mating marks on each sprocket and bal-

ancer unit timing chain. 

• Secure the hexagonal portion of the balancer shaft using a

suitable tool. Tighten the balancer unit sprocket bolt to the

specified torque.

NOTE:

Install crankshaft sprocket, balancer unit sprocket and balancer

unit timing chain at the same time.

5. Install balancer unit timing chain tensioner.

• After installation, make sure the mating marks have not

slipped, then remove stopper pin and release tensioner

sleeve.

Tool number

: KV10112100 (BT8653-A)

Balancer bolt torque 
Step 1 bolts 1 - 4

: 48.1 N·m (4.9 kg-m, 35 ft-lb)

Step 2 bolts 1 - 4

: 100

° clockwise

Step 3 bolts 1 - 4

: 0 N·m (0 kg-m, 0 ft-lb)

Step 4 bolts 1 - 4

: 48.1 N·m (4.9 kg-m, 35 ft-lb)

Step 5 bolts 1 - 4

: 100

° clockwise

Step 6 bolts 5 - 6

: 30.1 N·m (3.1 kg-m, 22 ft-lb)

PBIC3028E

PBIC3030E

PBIC2183E

PBIC3032E

TIMING CHAIN

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6. Install timing chain and related parts.

• Install by aligning mating marks on each sprocket and timing

chain.

• Before and after installing chain tensioner, check again to

make sure that mating marks have not slipped.

• After installing chain tensioner, remove stopper pin, and make

sure that tensioner moves freely.

CAUTION:

• For the following note, after the mating marks are

aligned, keep them aligned by holding them with a hand. 

• To avoid skipped teeth, do not rotate crankshaft and

camshaft 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 on each

sprocket for alignment. 

7. Install front oil seal to front cover. Refer to 

EM-63, "Removal and Installation of Front Oil Seal"

.

8. Install O-rings to cylinder head and cylinder block.

CAUTION:

Do not reuse O-rings.

9. Apply a continuous bead of liquid gasket with the tube presser

to front cover as shown, using Tool. 

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-21, "Recommended Chemical Products and Sealants"

.

NOTE:

Application instruction differs depending on the position.

10. Make sure that mating marks of timing chain and each sprocket are still aligned. Then install front cover.

CAUTION:

Be careful not to damage front oil seal by interference with front end of crankshaft.

PBIC3029E

Tool number

: WS39930000 (

—

)

Detail of A

: Cross over the start of the applica-
tion and the end. 

Detail of B

: Apply liquid gasket outside of bolt 
holes. (For all bolt holes other than B, 
apply to the inside.)

Detail of C

: Between here only, apply 4.5 - 5.5 
mm (0.177 - 0.217 in) dia.

PBIC3031E

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TIMING CHAIN

11. Tighten bolts in numerical order as shown.

• Use the following for locating M6 bolts.

• Tighten bolts to the specified torque.

12. After all bolts are tightened, retighten them to the specified

torque in numerical order as shown.

CAUTION:

Be sure to wipe off any excessive liquid gasket leaking to

surface for fitting oil pan.

13. Install chain guide between camshaft sprockets.
14. Install O-rings to the camshaft sprocket (INT) insertion points on backside of intake valve timing control

cover.

CAUTION:

Do not reuse O-ring.

15. Install O-ring to front cover.

CAUTION:

Do not reuse O-ring.

16. Apply a continuous bead of liquid gasket using Tool to intake

valve timing control cover as shown.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-21, "Recommended Chemical Products and Sealants"

.

17. Tighten bolts in numerical order as shown.

18. Install intake valve timing control solenoid valve to intake valve timing control cover if removed.
19. Connect ground cables, and install harness clip.
20. Insert crankshaft pulley by aligning with crankshaft key. 

Bolt position

Bolt length

5, 10, 14, 17

: 45 mm (1.77 in)

Except the above (Except 
1 through 4)

: 20 mm (0.79 in)

Bolt position

Torque specification

5 through 17

: 12.8 N·m (1.3 kg-m, 9 ft-lb)

1 through 4

: 49.0 N·m (5.0 kg-m, 36 ft-lb) 

KBIA0083E

Tool number

: WS39930000 (

—

)

SBIA0260E

KBIA0085E