- Ensure that the crankshaft sprocket and the silent shaft sprocket timing marks are aligned. Install new timing belt "B" over crankshaft sprocket "B", around the tensioner pulley, and over the silent shaft sprocket. DO NOT
leave any slack on the tension side of the belt. See Fig 1
.
- Push the timing belt "B" tensioner up to place pressure on the timing belt so that the tension side is taut. Belt tension should be 5-7 mm (.20-.28 in.) using the belt deflection method. Tighten the tensioner center bolt and torque to 15-22 Nm (11-16 in.lbs.). See Figure
.
CAUTION:
When tightening the bolt, ensure that the tensioner pulley shaft does not rotate with the bolt. Allowing it to rotate can cause excessive tension on the belt.
- Rotate the camshaft timing belt tensioner pulley so that the pinholes are to the left of the center bolt. Tighten the center bolt finger-tight. See Figure
.
NOTE:
Leave the Allen wrench installed in the auto tensioner.
- Make sure the camshaft sprocket dowel pins are located at the 12 o'clock position and the camshaft sprocket timing marks are aligned together (left sprocket at the 3 o'clock and right sprocket at the 9 o'clock positions). Both camshaft sprocket timing marks should be in line with the top surface of the cylinder head. See Figure
.
NOTE:
The exhaust camshaft sprocket may rotate in the counter- clockwise direction. This should be considered when installing the timing belt.
- Make sure that the crankshaft sprocket and the oil pump sprocket is aligned with the timing mark pointers. See Fig 2
.
- Remove the balance shaft plug on the rear side of the cylinder block and insert a Phillips screwdriver [shank diameter 8 mm (.31 in.)] through the hole. The balance shaft is in the correct position if the screwdriver can be inserted at least 60 mm (2.4"). If the inserted depth is less than this only 20-25 mm (.8-1.0"), the oil pump sprocket must be rotated one full turn and timing marks realigned. Recheck the balance shaft position using the screwdriver to ensure that it can be inserted 60 mm (2.4") or more. Keep the screwdriver inserted until timing belt installation is complete. See Fig 3
.
CAUTION:
Make sure the balance shaft is properly positioned. It is possible for the oil pump sprocket timing marks to be properly aligned, and have the balance shaft out of phase. This could result in a SEVERE engine vibration.
- Install the new timing belt over the intake side camshaft sprocket and clamp it in position with a clip. See Fig 4
.
- Use a wrench to maintain alignment of the two camshafts and install the timing belt over the exhaust side sprocket, aligning the timing marks (as shown in Fig. Figure
) and clamp the belt in position with a clip. See Fig 5
and Fig 6
.
- Position the timing belt around the idler pulley, oil pump sprocket, crankshaft sprocket and tensioner pulley (in that order) as shown in Fig. Fig 7
.
- Rotate the tensioner pulley in a clockwise direction and tighten the center bolt. See Fig 8
.
NOTE:
Make sure all timing belt teeth are engaged with the teeth on the camshafts, oil pump, and crankshaft sprockets and that all timing marks are still properly aligned.
- Remove the screwdriver from the balance shaft hole and install the plug.
- Remove the two clips holding the belt to the camshaft sprockets.
- Rotate the crankshaft a 1/4 turn Counterclockwise, then rotate it clockwise until the timing marks are aligned again. Crankshaft position should still be at the No. 1 cylinder TDC position of the compression stroke.
NOTE:
Make sure that all of the timing marks are still aligned.
- Loosen the tensioner pulley center bolt, attach Special Tool No. MD998767 (or MD998752) and apply 2.7 Nm (24 in.lbs.) torque to pulley (with beam type torque wrench) as shown in Fig. Fig 9
WITH TORQUE APPLIED TO THE TENSIONER PULLEY, tighten the attaching bolt, then torque to 49 +/- 6 Nm (36 +/- 4 ft. lbs.).
CAUTION:
Failure to follow this procedure will cause the belt tension to exceed the range of the auto tensioner limits and result in premature timing belt failure or jumping.
NOTE:
If the vehicle body interferes with the special tool and the torque wrench, raise the engine up slightly until there is adequate clearance.
- SLOWLY rotate the Special Tool No. MD998738 until it makes contact with the tensioner arm and remove the Allen wrench from the auto tensioner. See Fig 10
.
- Back off the special tool and rotate the crankshaft SIX complete turns clockwise.
- Measure the auto tensioner push rod position with a drill bit (distance between the tensioner arm and auto tensioner body) to ensure that it falls within the specification of 3.8-4.5 mm (.15-.18 in.) as shown in Fig. Fig 11
.
NOTE:
Wait 15 minutes after the Allen wrench is removed from auto tensioner (for plunger rod to stabilize) before measuring. If the plunger rod is out of specification, reset the auto tensioner (Removal Steps 10, 11 and 12) and repeat Steps 14 through 17 until the specified value is obtained.
- Remove special tool no. MD998738 and install the rubber plug to the inner timing belt cover.
- Install the upper and lower timing belt covers assembly. (Rotate the bottom of the lower cover toward the rear to assist in clearing the water pump).
NOTE:
Timing cover bolts vary in length. Make sure that the proper size bolts are installed in the correct hole locations. See Fig 12
.
- Install crankshaft pulley and torque to 25 +/- 5 Nm (18 +/- 4 ft. lbs.).
- Install A/C tensioner bracket with A/C belt and torque to 25 +/- 2 Nm (18 +/- 4 ft.lbs.). Adjust belt tension to 5.5-6.0 mm (.220-.240 in.) belt deflection.
- Install water pump pulley.
- Install alternator/water pump and power steering drive belts and adjust belt tension as follows:
ADJUST BELT TENSION SPECIFICATIONS
| Application |
Belt Deflection |
| Alternator/Water Pump Belt |
9.0-11.5 mm (.354-.453 in.) |
| Power Steering Belt |
6.0-9.0 mm (.240-.354 in.) |
- Install left front engine mount and bracket and torque to the specifications shown in Fig. Figure
.
- Remove engine support fixture.
- Install lower engine compartment splash shield.