2nd Timing Chain and Chain Tensioner

Removal
1. Disconnect negative cable at battery.
2. Drain engine oil.
3. Drain coolant.
4. Remove oil pan and oil pump strainer.
5. Remove cylinder head cover.
6. Remove timing chain cover.





7. Turn crankshaft to meet the following condition.
^ Key ("1") on crankshaft position as shown.
^ Arrow mark on idler sprocket ("2") points upward vertically.
^ The marks on sprockets ("3") match with marks on cylinder head.
Note that this step must be followed for reinstallation of timing chain.





8. Remove timing chain tensioner adjuster No.2 (1). To remove it, slacken 2nd timing chain by turning intake camshaft counterclockwise a little while pushing back pad.





9. Remove intake and exhaust camshaft timing sprocket bolts. To remove it, fit a spanner to hexagonal part (3) at the center of camshaft to hold it stationary.





10. Remove camshaft timing sprockets and 2nd timing chain.

CAUTION: After 2nd timing chain is removed, never turn intake camshaft, exhaust camshaft and crankshaft independently more than such an extent as shown. If turned, interference may occur between piston and valves and valves themselves, and parts related to piston and valves may be damaged.

Inspection

Timing Chain Guide No.2





^ Check shoe for wear or damage.

Camshaft Sprocket





^ Check teeth of sprocket for wear or damage.

Timing Chain





^ Check timing chain for wear or damage.

Tensioner Adjuster No.2





^ Check shoe for wear or damage.

Installation





1. Check that crank timing sprocket key (1) is in match with timing mark (2) on cylinder block as shown in figure.
2. Check that arrow mark (1) on idler sprocket faces upward as shown in figure.





3. Check that knock pins of intake and exhaust camshafts are aligned with timing marks on cylinder head as shown in figure.





4. Install 2nd timing chain by aligning yellow plate (1) of 2nd timing chain with arrow mark (2) on idler sprocket.





5. Install sprockets to intake and exhaust camshafts by aligning dark blue plate of 2nd timing chain with arrow marks on intake sprocket and exhaust sprocket respectively.

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

NOTE: As an arrow mark is provided on both sides, camshaft timing sprocket has no specific installation direction.





6. Install intake and exhaust camshaft timing sprocket bolts. To install it, fit a spanner to hexagonal part at the center of camshaft to hold stationary.





7. Push back plunger (1) into tensioner body (2) and hold it with stopper (3) at the position by inserting stopper (3) into body (2).
8. Install timing chain tensioner adjuster No.2 (1) with gasket.
Tightening torque
Timing chain tensioner adjuster No.2 bolt (a): 11 Nm (1.1 kgf, 8.0 ft. lbs.)
Timing chain tensioner adjuster No.2 nut (b): 45 Nm (4.5 kgf, 33.0 ft. lbs.)





9. Pull out stopper (2) from timing chain tensioner adjuster No.2 (1).





10. Turn crankshaft two rotations clockwise then align timing mark on crankshaft and timing mark on cylinder block as shown in figure.
Check that timing marks of cylinder head and cylinder block are in match with match marks on sprockets respectively.
11. Apply oil to timing chains, tensioner, tensioner adjusters, sprockets and guides.
12. Install timing chain cover.
13. Install cylinder head cover.
14. Install oil pan and oil pump strainer.
15. Adjust cooling fan belt tension.
16. Refill cooling system with coolant, front differential with gear oil, engine with engine oil and power steering system with specified fluid.
17. Verify that there is no coolant leakage, power steering fluid leakage, exhaust gas leakage and oil leakage at each connection.