Camshaft Timing Belt

Camshaft Timing Belt

Service Repair No - 12.65.18

Remove
1. Drain engine oil.





2. Remove 4 bolts securing engine mounting bracket to engine front plate and remove bracket.
3. Release and remove ancillary drive belt from remaining pulleys.





4. Remove 2 bolts securing ancillary drive belt tensioner and remove tensioner.





5. Remove Torx screw securing idler pulley to front mounting plate and remove pulley.





6. Release alternator battery lead terminal cover, loosen terminal nut and disconnect lead from terminal
7. Disconnect multiplug from alternator.
8. Remove lower bolt and upper nut and bolt securing alternator to front mounting plate.
9. Release alternator and remove.





10. Remove 3 bolts securing camshaft timing belt LH rear cover and remove cover.

Align Front Timing Belt:

11. Rotate crankshaft in a clockwise direction and align the engine "SAFE" position, notch on crankshaft pulley aligned to the "ARROW" on front mounting plate and the timing marks aligned on the rear camshaft gears as illustrated.





12. Remove 3 bolts securing camshaft timing belt LH front cover and remove cover.





13. Remove 3 bolts securing camshaft timing belt RH front cover and remove cover.





14. Remove bolt securing dipstick tube to cylinder block.
15. Depress locking collar, release and remove dipstick tube from engine sump.
16. Assemble LRT-12-161 to LRT-12-199 and secure with clamp bolt.





17. Insert LRT-12-161 with LRT-12-199 into crankshaft pulley, loosen and remove pulley bolt.
18. Remove LRT-12-161 and LRT-12-199 from crankshaft pulley.
19. Remove crankshaft pulley.





20. Remove 3 bolts securing camshaft timing belt lower cover to cylinder block and remove cover.





21. Remove 3 bolts securing engine front mounting plate and lifting bracket to cylinder block.
22. Remove bolt securing lifting bracket to RH cylinder head and remove lifting bracket.





23. Remove 5 bolts and 2 pillar bolts securing engine front mounting plate to cylinder block.
24. Remove 2 bolts securing IRD support bracket to engine front mounting plate.
25. With care, release and remove front mounting plate from engine.





26. Remove rubber blanking plug from around camshaft timing belt tensioner.





27. With assistance, relieve tension from camshaft timing belt tensioner using an Allen key fitted in the tensioner pulley backplate. Remove 2 bolts securing tensioner to cylinder block and remove tensioner.

CAUTION: DO NOT loosen Allen screw securing tensioner pulley.

28. If camshaft timing belt is to be refitted, mark direction of rotation on timing belt before removal.
29. With care, ease camshaft timing belt from gears using fingers only and remove timing belt.

CAUTION: Camshaft timing belt must be replaced if cylinder head is to be removed or new drive gears, tensioner or coolant pump are to be fitted. Camshaft timing belts must be stored and handled with care. Always store a camshaft timing belt on its edge with a bend radius greater than 50 mm. Do not use a camshaft timing belt that has been twisted or bent double as this will damage the reinforcing fibers. Do not use a camshaft timing belt if debris other than belt dust is found in timing belt covers. Do not use a camshaft timing belt if partial engine seizure has occurred. Do not use a camshaft timing belt if mileage exceeds 48,000 miles (77, 000 km). Do not use an oil or coolant contaminated timing belt, cause of contamination must be rectified.





30. Remove LH and RH exhaust camshaft cap seals.





31. Position tools LRT-12-196 to LH and RH front inlet camshaft gears and into the end of each exhaust camshaft.

CAUTION: Special tools must be fitted when tightening or loosening gear retaining bolts, otherwise damage to camshafts may occur.

32. Remove and discard bolts retaining front inlet camshaft gears to camshafts.
33. Remove tools LRT-12-196 from both inlet camshaft gears and exhaust camshafts.
34. Remove camshaft drive gears and hub assemblies.

Refit
1. Clean camshaft gears and hubs, crankshaft gear, tensioner and water pump pulleys.
2. Clean camshaft gears and hubs, crankshaft gear, tensioner and water pump pulleys.
3. Position timing belt to gears.





4. Fit tools LRT-12-196 to both front inlet camshaft gears and into the end of each exhaust camshaft.

CAUTION: Special tools must be fitted when tightening or loosening gear retaining bolts, otherwise damage to camshafts may occur.

5. Rotate both front camshaft gears fully clockwise as viewed from front of engine.
6. Using fingers only, fit drive belt to gears, starting at the crankshaft gear and working in an anti-clockwise direction, keeping the run as taut as possible and turning the camshaft gears only a minimum amount anti-clockwise to fit drive belt.

NOTE: To prevent the timing belt from disengaging from the crankshaft gear when fitting, fit a suitable wedge between the belt and oil pump belt guard.

7. Position timing belt tensioner in vice, slowly compress tensioner plunger to align hole in plunger with drillings in tensioner body. Fit a suitable pin, 1.5 mm in diameter, to retain plunger in tensioner body.
8. Clean tensioner bolts and apply Loctite 242 to first 3 threads.
9. Position an Allen key in tensioner backplate and hold tensioner pulley against timing belt.
10. With assistance, position timing belt tensioner, fit and tighten bolts to 25 Nm (18 ft. lbs.).
11. Release tensioner pulley and remove pin from tensioner.
12. Fit blanking rubber around tensioner.
13. Tighten front inlet camshaft gear bolts to 27 Nm (20 ft. lbs.). Tighten bolts a further 90°
14. Remove tools LRT-12-196 from both inlet camshaft gears and exhaust camshafts.
15. Remove wedge from between drive belt and oil pump belt guard.
16. Clean exhaust camshaft front cap seal locations and fit new cap seals.

CAUTION: The sealing edge of the cap seal and mating face must be clean and dry.

17. Position engine front mounting plate and manoeuvre plate into position.





18. Fit and tighten bolts in the sequence shown, M 10 pillar bolts to 45 Nm (33 ft. lbs.), M 12 bolts to 85 Nm (63 ft. lbs.).
19. Position engine lifting bracket, fit bolts securing lifting bracket and front mounting plate to cylinder block and RH cylinder head. Tighten M1 0 bolts to 45 Nm (33 ft. lbs.) and M8 bolt to 25 Nm (18 ft. lbs.).
20. Fit bolts securing IRD support bracket to front mounting plate and tighten to 45 Nm (33 ft. lbs.).
21. Clean end of dipstick tube.
22. Position dipstick tube to sump and cylinder block, fit bolt and tighten to 9 Nm (7 ft. lbs.).
23. Clean lower timing belt cover.
24. Position lower timing belt cover, fit and tighten bolts to 9 Nm (7 ft. lbs.).
25. Clean crankshaft pulley.
26. Fit crankshaft pulley to crankshaft gear and ensure that the indent on pulley locates over the lug on crankshaft gear.
27. Fit crankshaft pulley bolt and washer, position LRT-12-161 with LRT-12-199 into crankshaft pulley. Tighten pulley bolt to 160 Nm (118 ft. lbs.).
28. Remove special tool from crankshaft pulley, loosen bolt and remove LRT-12-161 from LRT12-199.
29. Clean ancillary drive belt tensioner.
30. Position ancillary belt tensioner, fit bolts and tighten to 25 Nm (18 ft. lbs.).
31. Clean LH and RH front timing belt covers.
32. Position LH and RH front timing belt covers, fit and tighten bolts to 4 Nm (3 ft. lbs.).
33. Clean idler pulley, position pulley to engine front mounting plate and tighten Torx bolt to 45 Nm (33 ft. lbs.).
34. Position alternator to front mounting plate.
35. Fit bolt and nut and bolt securing alternator to front mounting plate and tighten to 45 Nm (33 ft. lbs.).
36. Connect alternator multiplug.
37. Connect battery lead to alternator, fit and tighten nut to 8 Nm (6 ft. lbs.), fit terminal cover.
38. Clean LH rear timing belt cover.
39. Position LH rear timing belt cover, fit and tighten bolts to 4 Nm (3 ft. lbs.).
40. Position ancillary drive belt to crankshaft and alternator pulleys.
41. Position engine mounting front bracket to engine front plate and tighten bolts to 45 Nm (33 ft. lbs.).
42. Fill engine with oil.