1st Timing Chain and Chain Tensioner

REMOVAL
1. Disconnect negative cable at battery.
2. Drain engine oil.
3. Drain coolant.
4. Remove timing chain cover. Refer to Timing Cover.





5. For reinstallation of timing chain, align 8 timing marks as shown in figure by turning crankshaft.
6. Remove LH bank 2nd timing chain. Refer to Timing Chain; Service and Repair; LH (NO.1) BANK 2ND TIMING CHAIN AND CHAIN TENSIONER for removal.
7. Remove timing chain guide No.1.
8. Remove timing chain guide No.2.
9. Remove timing chain tensioner adjuster No.1.
10. Remove idler sprocket No. 1 and 1st timing chain.
11. Remove idler sprocket No.2 and sprocket shaft.
12. Remove timing chain tensioner.





13. Remove RH bank 1st timing chain intake camshaft sprocket bolt. To remove it, fit a spanner to hexagonal part at the center of camshaft to hold it stationary.
14. Remove RH bank 1st timing chain intake camshaft sprocket.
15. Remove 1st timing chain crankshaft sprocket.

INSPECTION
Timing chain guides No.1 and No.2





Check shoe for wear or damage.

Timing chain tensioner





Check shoe for wear or damage.

1st timing chain crankshaft sprocket





Check teeth of sprocket for wear or damage.

RH bank 1st timing chain intake camshaft sprocket





Check teeth of sprocket for wear or damage.

Idler sprocket No.1





Check teeth of sprocket for wear or damage.

Idler sprocket No.2





Check teeth of sprocket for wear or damage.

1st timing chain





Check timing chain for wear or damage.

Timing chain tensioner adjuster No.1





Check that latch and tooth surface are free from damage and latch functions properly.

INSTALLATION





1. Check timing mark on crankshaft as shown in figure.





2. Install 1st timing chain crankshaft sprocket as shown in figure. Confirm that tooth for CKP sensor are free from metal particles and damage.





3. Check timing mark on RH bank intake camshaft as shown in figure.





4. Install RH bank 1st timing chain intake camshaft sprocket noting following points.
^ The sprocket should be set in such way that its RH mark can be seen.
^ Camshaft should be held stationary by using a spanner at its hexagonal parts as shown in figure.
Tightening Torque (a): 80 Nm (8.0 kg-m, 57.5 ft. lbs.)





5. Install timing chain tensioner as shown in figure.
Tightening Torque (b): 27 Nm (2.7 kg-m, 19.5 ft. lbs.)





6. Install 1st timing chain by aligning match marks on RH silver plate of 1st timing chain and RH bank 1st timing chain intake camshaft sprocket.
7. Apply oil to bush of idler sprocket No.2.
8. Install idler sprocket No.2 and sprocket shaft.





9. Install idler sprocket No.2 by aligning match marks on LH silver plate of 1st timing chain.





10. Install crankshaft sprocket by aligning match marks on gold or yellow plate of 1st timing chain and crankshaft timing sprocket. To install it, fit a spanner to hexagonal part at the center of RH bank intake camshaft to turn a little.

CAUTION: Do not turn camshaft more than necessary. If turned excessively, valve and piston may get damaged.

11. Apply oil to bearing of idler sprocket No.1.





12. Install idler sprocket No.1.
Tightening Torque (c): 45 Nm (4.5 kg-m, 32.5 ft. lbs.)





13. With latch of tensioner adjuster No.1 returned and plunger pushed back into body, insert stopper into latch and body. After inserting it, check to make sure that plunger will not come out.





14. Install timing chain tensioner adjuster No.1.
Tightening Torque (d): 11 Nm (1.1 kg-m, 7.5 ft. lbs.)
15. Pull out stopper from adjuster No.1.





16. Install timing chain guide No.1 and No.2.
Tightening Torque (e): 9 Nm (0.9 kg-m, 6.5 ft. lbs.)





17. Check each aligned timing marks as shown in figure.
18. Install LH bank 2nd timing chain. Refer to Timing Chain; Service and Repair; LH (NO.1) BANK 2ND TIMING CHAIN AND TENSIONER for installation.
19. Install timing chain cover. Refer to Timing Cover.
20. Install oil pan, front differential housing, P/S system, cooling system, intake manifold with throttle body and other parts.
21. Refill cooling system with coolant, front differential with gear oil, P/S system with specified fluid and engine with engine oil.
22. Check wheel alignment referring to Wheels, Tires and Alignment.
23. Verify that there is no fuel leakage, water leakage and oil leakage at each connection.