Procedures
Timing Drive ComponentsRemoval
CAUTION: During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces that enters the oil passages, coolant passages or the oil pan, can cause engine failure.
CAUTION: Failure to verify correct timing drive component alignment will result in severe engine damage.
1. Remove the engine front cover.
2. CAUTION: This pulse wheel is used in several different engines. Install the pulse wheel with the keyway in the slot stamped 30RFF (orange in color).
Remove the ignition pulse wheel.
3. Install the crankshaft pulley bolt and washer.
4. Remove the 6 spark plugs
5. Rotate the crankshaft clockwise to position the crankshaft keyway in the 11 o'clock position and position the camshafts in the correct position. This will position the No.1 cylinder at top dead center (TDC).
^ Verify that the camshafts are correctly located. If not, rotate the crankshaft one additional turn and recheck.
6. Rotate the crankshaft clockwise 120 degrees to the 3 o'clock position to position the RH camshafts in the neutral position.
7. Verify that the RH camshafts are in the neutral position.
8. Remove the RH timing chain tensioner arm.
1 Remove the 2 bolts.
2 Remove the tensioner.
3 Remove the tensioner arm.
9. Remove the RH timing chain.
10. Remove the 3 bolts and the RH VCT assembly.
11. Rotate the crankshaft clockwise 600 degrees (1-2/3 turns) to position the crankshaft keyway in the 11 o'clock position. This will position the LH camshafts in the neutral position.
12. Verify the LH camshafts are in the neutral position.
13. Remove the LH timing chain tensioner and tensioner arm.
1 Remove the 2 bolts.
2 Remove the tensioner.
3 Remove the tensioner arm.
14. Remove the LH timing chain.
15. Remove the 4 bolts and the LH VCT assembly.
16. Remove the pulley bolt, washer and the crankshaft sprocket.
Installation
1. Install the crankshaft sprockets with the timing marks out.
2. NOTE: LH shown, RH similar.
Position the chain tensioner in a soft-jawed vise.
3. NOTE: LH shown, RH similar.
Hold the chain tensioner ratchet lock mechanism away from the ratchet stem with a small pick.
4. CAUTION: During tensioner compression, do not release the ratchet stem until the tensioner piston is fully bottomed in its bore or damage to the ratchet stem will result.
Slowly compress the timing chain tensioner.
5. Retain the tensioner piston with a 1.5 mm (0.05 inch) wire or paper clip.
6. If timing marks in the timing chains are not evident, use a permanent-type marker to mark the crankshaft and camshaft timing marks on the LH and RH timing chains.
1 Mark any link to use as the crankshaft timing mark.
2 Starting with the crankshaft timing mark, count counterclockwise 29 links and mark the link.
3 Continue counting counterclockwise to link 42 and mark the link.
7. Verify that the LH camshafts are correctly positioned.
8. Install the variable camshaft timing (VCT) assembly and the 4 bolts.
^ Tighten to 25 Nm (18 ft. lbs.).
9. Install the LH timing chain.
^ Align the marks on the timing chain with the marks on the camshaft and crankshaft sprockets.
10. Install the LH timing chain tensioner arm and the LH timing chain tensioner.
1 Install the tensioner arm.
2 Position the tensioner.
3 Install the 2 bolts.
^ Tighten to 25 Nm (18 ft. lbs.).
11. Install the crankshaft pulley bolt and washer and rotate the crankshaft clockwise 120 degrees until the crankshaft keyway is in the 3 o'clock position.
12. Verify that the RH camshafts are correctly positioned.
13. Install the RH VCT assembly and the 3 bolts.
^ Tighten to 25 Nm (18 ft. lbs.).
14. Install the RH timing chain.
^ Align the marks on the timing chain with the marks on the camshaft and crankshaft sprockets.
15. Install the RH timing chain tensioner and tensioner arm.
1 Install the tensioner arm.
2 Position the tensioner.
3 Install the 2 bolts.
^ Tighten to 25 Nm (18 ft. lbs.).
16. Remove the LH and RH timing chain tensioner piston retaining wires.
17. Rotate the crankshaft counterclockwise 120 degrees to top dead center (TDC).
18. CAUTION: Failure to verify correct timing drive component alignment will result in severe engine damage.
Verify the timing with the following steps.
1 There should be 12 chain links between the camshaft timing marks.
2 There should be 27 chain links between the camshaft and the crankshaft timing marks.
3 There should be 30 chain links between the camshaft and the crankshaft timing marks.
19. Remove the crankshaft pulley bolt and washer.
20. CAUTION: This pulse wheel is used in several different engines.
Install the pulse wheel with the keyway in the slot stamped 30RFF only (orange in color).
Install the ignition pulse wheel.
21. Install the 6 spark plugs.
^ Tighten to 15 Nm (11 ft. lbs.).
22. Install the engine front cover.