1ST Timing Chain and Chain Tensioner Removal and Installation

1st Timing Chain and Chain Tensioner Removal and Installation

CAUTION: After timing chain is removed, never turn crankshaft and camshafts independently more than its allowable turning range described referring to 2nd Timing Chain an Chain Tensioner Removal and Installation. If turned, interference may occur between piston and valves and valves themselves, and parts related to piston and valves may be damaged.

Removal
1. Remove 2nd timing chain.
2. Remove timing chain guide No. 1 (1).
3. Remove timing chain tensioner adjuster No. 1 (2).
4. Remove timing chain tensioner (3).
5. Remove idler sprocket (6) and 1st timing chain (5).
6. Remove crankshaft timing sprocket (4).





Installation

1. Install crankshaft timing sprocket (2) as shown in figure.








2. Check that match mark (1) on crankshaft timing sprocket is in match with timing mark (2) on lower crankcase.





3. Apply engine oil to idler sprocket shaft and bush of idler sprocket (1).
4. Install idler sprocket and idler sprocket shaft.
5. Install 1st timing chain by aligning dark blue plate (4) of 1st timing chain (3) and match mark (2) on idler sprocket (1).





6. Bring gold plate (4) of 1st timing chain (3) into match with match mark (2) on crankshaft timing sprocket (1).





7. Apply engine oil to sliding surface of timing chain tensioner (1) and then install it as shown in figure.
Tighten tensioner nut to specified torque.

Tightening torque
Timing chain tensioner nut a: 25 Nm (2.5 kgf-m, 18.0 ft. lbs.)








8. With latch of tensioner adjuster No. 1 returned and plunger (1) pushed back into body, insert stopper (4) into latch (2) and body (3).
After inserting it, check to make sure that plunger will not come out.





9. Install timing chain tensioner adjuster No. 1 (1).

Tightening torque
Timing chain tensioner adjuster No.1 bolt a: 11 Nm (1.1 kgf-m, 8.0 ft. lbs.)

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





11. Apply engine oil to sliding surface of timing chain guide No.1 (1) and then install it. Tighten guide bolts to specified torque.

Tightening torque
Timing chain guide No.1 bolt a: 9 Nm (0.9 kgf-m, 6.5 ft. lbs.)





12. Check that dark blue and gold plates of 1st timing chain are in match with match marks on sprockets respectively.








13. Install 2nd timing chain.
14. Install timing chain cover.
15. Install cylinder head cover.
16. Install oil pan.
17. Install engine assembly to vehicle.