Timing Belt: Service and Repair

TIMING BELT AND TENSIONER

REMOVAL





1. Negative (-) battery cable.
2. Loosen upper and lower A/C compressor mounting bolts (if equipped).
3. Loosen upper and lower power steering pump mount bolts.
4. A/C compressor (if equipped) and/or power steering drive belt from pulleys.
5. Loosen upper and lower generator mounting bolts.
6. Generator/coolant pump drive belt from pulleys.
7. Four nuts, cooling fan and coolant pump pulley from coolant pump.
8. Raise and suitably support vehicle.
9. Four bolts and front skid plate from undercarriage (if equipped).
10. Two lower radiator shroud bolts.
11. Lower vehicle.
12. Two bolts from A/C suction line brackets at right side of radiator core support (if equipped) and carefully reposition suction line for radiator shroud removal access.
13. Two upper radiator shroud bolts and radiator shroud from radiator.

NOTE:
- If radiator shroud is difficult to remove, drain the cooling system and disconnect the upper radiator hose from the radiator to gain access.
- It is not necessary to remove the crankshaft pulley center bolt when removing the crankshaft pulley.





14. Five bolts and crankshaft pulley from crankshaft.
15. Oil pressure sending unit wire conduit from timing belt cover.
16. Eight bolts, one nut and timing belt cover from engine.





NOTE: There are two sets of timing marks which must be aligned to ensure correct engine timing upon timing belt installation. A notch in the camshaft timing belt gear designated as E must be aligned with the notch in the cylinder head cover. A punch mark on the crankshaft timing belt gear should then align with the arrow in the oil pump casting. Make sure to align both sets of marks prior to timing belt removal to ensure correct timing belt installation and engine timing.

17. Align the timing marks on the cylinder head cover and camshaft timing belt gear. This should also align the timing marks on the oil pump casting and crankshaft timing belt gear.





18. Loosen the timing belt tensioner bolt.
19. Timing belt tensioner spring from timing belt tensioner plate.
20. Timing belt from camshaft and crankshaft timing belt gears.
21. One stud, one bolt, timing belt tensioner and tensioner plate from engine.

CAUTION: Do not turn the crankshaft and camshaft independently of one another once the timing belt has been removed. If the crankshaft or camshaft is turned independently, interference between the pistons and valves may occur causing component damage.

22. Inspect the timing belt for wear or cracking and the tensioner for smooth operation; replace if necessary.

INSTALLATION






1. Timing belt tensioner plate and tensioner to engine; secure with timing belt tensioner stud and bolt.

NOTE: Do not tighten the timing belt tensioner stud and bolt to specification until the timing belt is properly installed. Install the timing belt tensioner stud and bolt finger tight only.

CAUTION: When installing a new or used timing belt, the directional arrows on the timing belt must be matched with the rotation of the crankshaft. If this precaution is not observed, excessive wear and timing belt failure may occur.

2. Push the timing belt tensioner plate up for timing belt installation.





3. Timing belt onto camshaft and crankshaft timing belt gears.
^ Inspect the timing marks on the cylinder head cover and camshaft timing belt gear for alignment as well as the timing marks on the oil pump casting and crankshaft timing belt gear. If these two sets of timing marks are not properly aligned, remove the timing belt and align both sets of marks as previously outlined in this procedure.





4. Timing belt tensioner spring to timing belt tensioner plate.

NOTE: Rotate the crankshaft two complete revolutions to remove any slack from the timing belt and to properly seat the timing belt. When all slack has been removed from the timing belt, inspect both sets of timing marks to ensure that they are aligned respectively.

^ Tighten
- Timing belt tensioner stud to 10 Nm (89 inch lbs.).
- Timing belt tensioner bolt to 25 Nm (18 ft. lbs.).
5. Timing belt cover to engine; secure with one nut and eight bolts.
^ Tighten the timing belt cover nut and bolts to 10 Nm (89 inch lbs.).
6. Oil pressure sending unit wire conduit to timing belt cover.
7. Crankshaft pulley to crankshaft; secure with five bolts.
^ Tighten the crankshaft pulley bolts to 16 Nm (12 ft. lbs.).
8. Radiator shroud to radiator; secure with two bolts.
^ Tighten the upper shroud bolts to 10 Nm (89 inch lbs.).
9. Carefully reposition A/C suction line and brackets to right side of radiator core support (if equipped); secure with two bolts.
^ Tighten the A/C suction line bracket bolts to 10 Nm (89 inch lbs.).
10. Raise and suitably support vehicle.
11. Two lower radiator shroud bolts.
^ Tighten the lower shroud bolts to 10 Nm (89 inch lbs.).
12. Front skid plate to undercarriage (if equipped); secure with four bolts.
^ Tighten the front skid plate bolts to 54 Nm (40 ft. lbs.).
13. Lower vehicle.
14. Coolant pump pulley and cooling fan to coolant pump; secure with four nuts.
^ Tighten the coolant fan nuts to 11 Nm (97 inch lbs.).
15. Generator/coolant pump drive belt to pulleys.
16. A/C compressor (if equipped) and/or power steering drive belt to pulleys.
^ Adjust the generator/coolant pump, A/C compressor, power steering drive belts.
17. Negative (-) battery cable.
^ Tighten the negative battery cable to negative battery terminal retainer to 15 Nm (11 lb. ft.).