Timing Components: Service and Repair
Timing Drive ComponentsSpecial Service Tools
Removal
NOTE: This procedure covers the removal and installation of the following components: timing chains, chain guides, tensioners and sprockets.
1. Remove the cover and disconnect the battery ground cable.
2. WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle on safety stands.
Raise and support the vehicle.
3. Remove the engine front cover.
4. Remove the crankshaft position (CKP) sensor.
5. CAUTION: Rotating the crankshaft in a counterclockwise direction may cause engine damage. Crankshaft journals are directionally machined. Rotating the crankshaft counterclockwise can raise burrs on bearing surfaces, reducing engine life.
CAUTION: Rotate the crankshaft clockwise to position the engine to top dead center (TDC) number 1 cylinder.
Lock the crankshaft.
> Install the special tool.
> Install the screw.
6. Remove the RH variable camshaft timing (VCT) control solenoid housing.
> Remove the 3 bolts.
> Remove and discard the O-ring seals.
7. Install the special tool to the RH cylinder head.
> Rotate the crankshaft until the flats on the camshafts are parallel with the cylinder head joint faces.
> Install the 3 bolts.
8. Remove the RH primary timing chain tensioner.
> Remove the 2 bolts.
9. Remove the RH upper and lower primary timing chain tensioner guides.
> Remove the 2 bolts.
10. Remove the RH primary timing chain.
11. Remove the LH variable camshaft timing (VCT) control solenoid housing.
> Remove the 2 bolts.
> Remove the nut.
> Remove and discard the O-ring seals.
12. Install the special tool to the LH cylinder head.
> Install the 3 bolts.
13. Remove the LH primary timing chain tensioner.
> Remove the 2 bolts.
14. Remove the LH upper and lower primary timing chain tensioner guides.
> Remove the 2 bolts.
15. Remove the LH primary timing chain.
16. Release the LH camshaft sprocket assembly.
> Remove the 2 Torx bolts.
17. Remove the LH secondary timing chain, tensioner and sprocket assembly.
> Remove the 2 bolts.
18. Release the RH camshaft sprocket assembly.
> Remove the 2 Torx bolts.
19. Remove the RH secondary timing chain, tensioner and sprocket assembly.
> Remove the 2 retaining bolts.
20. NOTE: Note the orientation of the crankshaft sprocket.
Remove the crankshaft sprocket.
> Remove the crankshaft sprocket key.
Installation
1. Install the crankshaft sprocket.
> Clean the components.
> Install the crankshaft sprocket key.
2. CAUTION: Make sure the secondary timing chain and camshaft sprockets are free to rotate.
NOTE: LH illustration shown, RH is similar.
Install the LH secondary timing chain, tensioner and sprocket assembly.
> Clean the components.
> Install the Torx bolts, but do not tighten fully at this stage.
3. Install the special tool to the exhaust camshaft sprocket.
Reposition the camshaft sprockets for the most advantageous position for use of the special tool.
4. Install the LH secondary timing chain tensioner retaining bolts.
> Tighten the bolts to 12 Nm (9 lb.ft).
5. Install the LH primary timing chain.
> Clean the components.
> Make sure the timing chain slack is on the tensioner side of the timing chain.
6. Install the LH primary timing chain tensioner guides.
> Clean the components.
> Tighten the bolts to 12 Nm (9 lb.ft).
7. CAUTION: During timing chain tensioner compression, do not release the ratchet stem until the timing chain tensioner piston is fully bottomed in its bore or damage to the ratchet stem will result.
NOTE: LH illustration shown, RH is similar.
Install the LH primary timing chain tensioner.
> Clean the components.
> Using 3 mm diameter metal rod, retain the chain tensioner piston.
> Tighten the bolts to 12 Nm (9 lb.ft).
> Remove the retaining rod.
8. CAUTION: Using the special tool, apply force to the tool in a counter-clockwise direction, to tension the primary timing chain on its drive side.
CAUTION: The intake camshaft sprocket retaining bolt MUST be tightened before the exhaust camshaft sprocket retaining bolt. Engine damage will occur if this procedure is not followed.
Install the special tool to the LH exhaust camshaft sprocket.
> Tighten the intake camshaft sprocket retaining bolt to 120 Nm (88 lb.ft).
> Tighten the exhaust camshaft retaining bolt to 120 Nm (88 lb.ft).
9. Install the LH VCT control solenoid housing.
> Clean the components.
> Install the new O-ring seals.
> Tighten the new bolts to 22 Nm (16 lb.ft).
> Tighten the nut to 10 Nm (7 lb.ft).
10. CAUTION: Make sure the secondary timing chain and camshaft sprockets are free to rotate.
Install the RH secondary timing chain, tensioner and sprocket assembly.
> Clean the components.
> Install the Torx bolts, but do not tighten fully at this stage.
11. Install the RH secondary timing chain tensioner retaining bolts.
> Tighten the bolts to 12 Nm (9 lb.ft).
12. Install the RH primary timing chain.
> Clean the components.
> Make sure the timing chain slack is on the tensioner side of the timing chain.
13. Install the RH primary timing chain tensioner guides.
> Tighten the bolts to 12 Nm (9 lb.ft).
14. CAUTION: During timing chain tensioner compression, do not release the ratchet stem until the timing chain tensioner piston is fully bottomed in its bore or damage to the ratchet stem will result.
Install the RH primary timing chain tensioner.
> Clean the components.
> Using 3 mm diameter metal rod, retain the chain tensioner piston.
> Tighten the bolts to 12 Nm (9 lb.ft).
> Remove the retaining rod.
15. CAUTION: Using the special tool, apply force to the tool in a counter-clockwise direction, to tension the primary timing chain on its drive side.
CAUTION: The intake camshaft sprocket retaining bolt MUST be tightened before the exhaust camshaft sprocket retaining bolt. Engine damage will occur if this procedure is not followed.
Install the special tool to the RH exhaust camshaft sprocket.
> Tighten the intake camshaft sprocket retaining bolt to 120 Nm (88 lb.ft).
> Tighten the exhaust camshaft retaining bolt to 120 Nm (88 lb.ft).
16. Install the RH VCT control solenoid housing.
> Clean the components.
> Install the new O-ring seals.
> Tighten the new bolts to 22 Nm (16 lb.ft).
17. Remove the special tool from the RH cylinder head.
> Remove the 3 bolts.
18. Remove the special tool from the LH cylinder head.
> Remove the 3 bolts.
19. Install the engine front cover.
20. Remove the crankshaft locking tool.
> Remove the screw.
21. Install the CKP sensor.
22. Connect the battery ground cable and install the cover.