Timing Belt: Service and Repair
DISASSEMBLY
1. Remove the crankshaft pulley, coolant pump pulley and drive belt.
2. Remove the timing belt cover.
3. Remove the timing belt tensioner pulley.
4. Remove the timing belt.
NOTE: If the timing belt is reused, make an arrow indicating the turning direction (or the front of the engine) to make sure that the belt is reinstalled in the same direction as before.
5. Remove the idler pulley.
6. Remove the camshaft sprocket.
NOTE: Be careful not to damage the cylinder head with the wrench.
7. Remove the crankshaft sprocket from crankshaft.
INSPECTION
Sprockets and Tensioner Pulley, and Idler Pulley.
1. Check the camshaft sprocket, crankshaft sprocket, tensioner pulley, and idler pulley for abnormal wear, cracks, or damage.Replace as necessary.
2. Inspect the tensioner pulley and the idler pulley for easy and smooth rotation and check for play or noise. Replace as necessary.
3. Replace if there is a grease leak.
Timing Belt
1. Check the belt for oil or dust deposits. Replace, if necessary. Small deposits should be wiped away with a dry cloth or paper. Do not clean with solvent.
2. When the engine is overhauled or belt tension adjusted, carefully check the belt. If any of the above flaws are evident, replace the belt.
REASSEMBLY
1. Install damper pulley flange and crankshaft sprocket as shown. Pay close attention to their mounting direction.
2. Install the camshaft sprocket and tighten the bolt to the specified torque.
Tightening torque
Camshaft sprocket bolt: 100-120 Nm (1000-1200 kgf-cm, 74-89 ft. lbs.)
3. Align the timing marks of the camshaft sprocket and crankshaft sprocket with the No. 1 piston placed at top dead center and its compression stroke.
4. Install the timing belt tensioner and idler pulley.
5. Install the timing belt on the camshaft.
When the timing belt is installed on the camshaft sprocket, make sure that the tension side is tightened by pushing the timing belt tensioner pulley toward the water pump.
6. Turn the crankshaft one turn in the operating direction (clockwise) and realign crankshaft sprocket timing mark.
CAUTION: Do not turn the crankshaft in a counterclockwise direction. The crankshaft should be turned smoothly.
Tightening torque
Tensioner pulley installing bolt: 43-55 Nm (430-550 kgf-cm, 32-41 ft. lbs.)
7. Recheck the belt tension. When the tension side of timing belt is pushed horizontally with a moderate force [approx. 2kg (20 N, 5 lbs.)), the timing belt cog end sags in approx. 4-6 mm (0.16-0.24 inch).
8. Install the timing belt cover.
Tightening torque
Timing belt cover bolt: 8-10 Nm (80-100 kgf-cm, 6-7.4 ft. lbs.)
9. Install the crankshaft pulley. In this case, make sure that the crankshaft sprocket pin fits the small hole in the pulley.
Tightening torque
Crankshaft pulley bolt: 170-180 Nm (1700-1800 kgf-cm, 125-133 ft. lbs.)
10. Install the coolant pump pulley.
11. Install the drive belt and adjust the belt tension.