Nissan Frontier. Instruction - part 714

TIMING CHAIN

EM-45

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TIMING CHAIN

Exploded View

INFOID:0000000009478064

1.

O-ring

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.

Intake valve timing control solenoid 
valve

12. Intake valve timing control cover

13. Oil ring

14. Front oil seal

15. Crankshaft pulley

16. Crankshaft pulley bolt

17. Crankshaft sprocket

18. Spacer

19. Balancer unit timing chain tensioner

20. Timing chain tension guide

21. Balancer unit

22. Balancer unit sprocket

23. Balancer unit timing chain

A.

Refer to 

EM-46, "Removal and Instal-

lation"

B.

Refer to 

EM-46, "Removal and Instal-

lation"

WBIA0834E

EM-46

< REMOVAL AND INSTALLATION >

[QR25DE]

TIMING CHAIN

Removal and Installation

INFOID:0000000009478065

REMOVAL

1. Remove engine under cover. Refer to 

EXT-15, "Removal and Installation"

.

2. Release the fuel pressure. Refer to 

EC-466, "Fuel Pressure Check"

.

3. Remove the air cleaner case and air duct and resonator assembly. Refer to 

EM-25, "Removal and Instal-

lation"

.

4. Remove the spark plugs. Refer to 

EM-18, "Removal and Installation"

.

5. Remove the rocker cover. Refer to 

EM-37, "Removal and Installation"

.

6. Remove the coolant overflow reservoir tank.
7. Remove the drive belt auto-tensioner. Refer to 

EM-15, "Removal and Installation of Drive Belt Auto-Ten-

sioner"

.

8. Remove the generator. Refer to 

CHG-28, "Removal and Installation - QR25DE Models"

.

9. Remove the strut tower brace. Refer to 

FSU-13, "Component"

.

10. Dismount and position aside the A/C compressor with the piping attached.
11. Dismount and position aside the power steering pump and reservoir tank with the piping attached.
12. Remove the oil pan, and oil strainer. Refer to 

EM-33, "Removal and Installation"

.

13. Remove intake valve timing control cover bolts in the order as

shown.

14. Remove the intake valve timing control cover by cutting the seal-

ant using Tool.

15. Pull chain guide between camshaft sprockets out through front

cover.

16. 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.

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.

Tool number

: KV10111100 (J-37228)

KBIA0085E

KBIA0190E

KBIA0115E

TIMING CHAIN

EM-47

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

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

in).

CAUTION:

Do not remove the crank shaft pulley bolt as it will be used

as a supporting point for the Tool.

b. Attach a pulley puller in the M6 (0.24 in diameter) thread hole on

crankshaft pulley, and remove crankshaft pulley. 

18. If the front oil seal needs to be replaced, remove it using a suit-

able tool. 

19. Remove the front cover as follows:
a. Loosen the front cover bolts in the reverse order as shown, and

remove them.

b. Remove the front cover.

CAUTION:

Be careful not to damage the mating surface.

KBIA0077E

KBIA0078E

SEM829E

KBIA0083E

EM-48

< REMOVAL AND INSTALLATION >

[QR25DE]

TIMING CHAIN

20. Remove timing chain with the following procedure:
a. Push in chain tensioner plunger. Insert a stopper pin into hole on chain tensioner body to secure chain

tensioner plunger and remove chain tensioner.

NOTE:

Use approximately 0.5 mm (0.02 in) dia. hard metal pin as a

stopper pin.

b. Remove timing chain.

CAUTION:

Do not rotate crankshaft or camshaft while timing chain is removed. It causes interference

between valve and piston.

21. Remove camshaft sprockets. Refer to 

EM-54

.

22. Remove timing chain slack guide, timing chain tension guide and spacer.
23. Remove balancer unit timing chain tensioner with the following procedure:
a. Lift lever up, and release ratchet claw for return proof.
b. Push tensioner sleeve in, and hold it.
c.

Matching the hole on lever with the one on body, insert a stopper

pin to secure tensioner sleeve.

NOTE:

Use approximately 1 mm (0.04 in) dia. hard metal pin as a stop-

per pin.

d. Remove balancer unit timing chain tensioner.

24. Secure the hexagonal portion of the balancer shaft using a suitable tool. Loosen the balancer unit

sprocket bolt.

25. Remove balancer unit timing chain, balancer unit sprocket and crankshaft sprocket.

NOTE:

When removing balancer unit timing chain, remove crankshaft sprocket and balancer unit sprocket at the

same time.

26. Loosen bolts in reverse order as shown, and remove balancer

unit.

CAUTION:

Do not disassemble balancer unit.

NOTE:

Use socket (size E14) for bolts No.1 to 4.

INSPECTION AFTER REMOVAL

Timing Chain

KBIA0048E

PBIC3027E

PBIC3028E