TIMING CHAIN

Removal

1. Remove front timing chain cover. Refer to See: Timing Cover\Service and Repair\Front Timing Chain Case.
2. Disconnect the power brake booster vacuum hose.
3. Disconnect the electric throttle control actuator.
4. Disconnect the coolant hoses at the electric throttle control actuator.
5. Disconnect the PCV hose.
6. Disconnect the EVAP canister purge volume control solenoid vacuum hose.
7. Remove the intake manifold collector. Refer to See: Intake Manifold\Service and Repair\Intake Manifold Collector.
8. Remove the six ignition coils.
9. Remove the six spark plugs. Refer to See: Spark Plug\Service and Repair.
10. Remove the engine oil dipstick.
11. Remove the rocker covers. Loosen the bolts in the numerical order as shown.

Arrow Indicates Front

12. Place paint marks on the timing chain and sprockets to indicate the correct position of the components for installation.
13. Remove the internal chain guide and slack guide.

14. Remove the timing chain tensioner.

1. Pull lever down and release plunger stopper tab. Plunger stopper tab can be pushed up to release (coaxial structure with lever).

2. Insert stopper pin into tensioner body hole to hold lever, and keep the tab released. An Allen wrench [1.2 mm (0.047 in) ] is used for a stopper pin as an example.
3. Insert plunger into tensioner body by pressing the slack side chain guide.

4. Keep the slack side chain guide pressed and hold it by pushing the stopper pin through the lever hole and body hole.
5. Remove the bolts and remove the timing chain tensioner.

15. Remove primary timing chain and crankshaft sprocket.

CAUTION:
After removing timing chain, do not turn the crankshaft and camshaft separately, or the valves will strike the pistons.

16. Attach a suitable stopper pin to the right and left camshaft chain tensioners (for secondary timing chains).
17. Remove the intake and exhaust camshaft sprocket bolts.

• Apply paint to the timing chain and camshaft sprockets for alignment during installation.
• Secure the hexagonal portion of the camshaft using a wrench to loosen the bolts.

18. Remove the secondary timing chains with camshaft sprockets.

1. Rotate camshaft slightly, and slacken timing chain of timing chain tensioner-side.
2. Insert metal or resin plate [0.5 mm (0.020 in) ] into guide between timing chain and chain tensioner plunger. Remove cam sprocket and secondary timing chain with timing chain removed from guide groove.

CAUTION:
Chain tensioner plunger can move, while stopper pin is inserted in tensioner. Plunger can come out of tensioner when timing chain is removed. Use caution during removal.

• Intake camshaft sprocket is two-for-one structure of primary and secondary sprockets.
• Handle the intake sprockets as an assembly.

CAUTION:

• Avoid impact or dropping the intake sprockets.
• Do not disassemble the intake sprockets (never loosen bolts (A) and (B) as shown).

19. Remove the chain tension guide.
20. Remove the rear timing chain case, if necessary. Refer to See: Timing Cover\Service and Repair\Rear Timing Chain Case.

21. Use a scraper to remove all of the old Silicone RTV Sealant from the front timing chain case and opposite mating surfaces.

CAUTION:
Do not damage the mating surfaces.

22. Remove all old Silicone RTV Sealant from all the bolt holes and bolts.

CAUTION:
Do not damage the threads or mating surfaces.

23. Remove the front oil seal from the front timing chain case using a suitable tool.

CAUTION:
Do not damage the front cover.