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The Nissan Altima is a mid-size automobile manufactured by Nissan, and is arguably a continuation of the Nissan Bluebird line, which began in 1957.

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Nissan Timing chain replacement

How do I replace the timing chain on my 2002 Nissan Altima?

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John, here is what the manual says:"

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

2. Remove RH splash shield.

3. Remove the upper and lower oil pan, and oil strainer. Refer to EM-25, "Removal and Installation" .

4. Remove generator. Refer to SC-33, "Removal" .

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

a. Loosen bolts in the numerical order as shown.

b. Remove the cover with suitable tool to cut the sealant.

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.

b. At the same time, make sure that the mating marks on the camshaft 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 with a suitable tool, then loosen the crankshaft pulley mounting bolt, and pull the pulley out about 10 mm (0.39 in).

b. Attach a pulley puller in the M 6 (0.24 in diameter) thread hole on crankshaft pulley, and remove crankshaft pulley.

15. Remove the front cover with the following procedure:

a. Loosen the mounting bolts in the reverse order shown in the figure, and remove them.

b. Remove the front cover.


- Be careful not to damage the mounting surface.

16. If the front oil seal needs to be replaced, lift it out with a screwdriver to remove it.

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 hold the chain tensioner.

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

b. Remove the chain tensioner.

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

loosen the camshaft sprocket mounting bolt and remove the

camshaft sprocket for both camshafts.


- 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. Remove the timing chain tensioner for the balancer unit with the following procedure:

a. Lift the tensioner lever up, and release the ratchet claw for installation.

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.

d. Remove the timing chain tensioner for the balancer unit.

20. Remove timing chain for balancer unit and crankshaft sprocket.

21. Loosen mounting bolts in reverse order shown in the figure, and remove balancer unit.

- Use Torx socket (size E14)


- Do not disassemble balancer unit.

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It's a ##&&%. I finally got my timing chain back on correctly (I hope) 2 days ago. It broke down 15 months ago.

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@jhamm what was the car doing before the timing chain was changed

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Thanks for this helpful information. But no illustrative pictures attached. We appreciate it more if you will kindly add illustrative pictures.

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