Timing Belt: Service and Repair
REMOVAL AND INSTALLATIONRemoval Service Points
CRANKSHAFT BOLT / CRANKSHAFT PULLEY REMOVAL
Exploded View
- Use the special tool to stop the crankshaft pulley from turning, and remove the crankshaft bolt.
Caution: Hold the special tool securely so that it doesn't move.
ENGINE MOUNT REMOVE AND INSTALL
Exploded View
ENGINE MOUNT INSULATOR MOUNTING BOLT REMOVAL
(1) To make it easier to remove the engine mount insulator mounting bolt in vehicles with air conditioning, remove the air conditioning receiver bracket and support the receiver so that there are no bends in the pipe.
(2) Remove the engine mount insulator mounting bolt.
ENGINE MOUNT BRACKET REMOVAL
(1) For vehicles with power steering, remove the power steering fluid reservoir tank and bracket, and support them so that the pressure hose will not be in the way.
(2) Remove the engine mount bracket.
INSPECTION
- Check each insulator for cracks or damage.
- Check each bracket for deformation or damage.
TIMING BELT REMOVAL
Exploded View
(1) Turn the crankshaft clockwise to align each timing mark and to set the No. 1 cylinder at compression top dead center.
Caution: Always turn the crankshaft clockwise.
(2) Loosen the timing belt tensioner bolt.
(3) Set a screwdriver to the timing belt tensioner and press it fully back in the direction of the arrow.
(4) Temporarily tighten the timing belt tensioner bolt.
(5) Remove the timing belt.
Caution: If the timing belt is to be re-used, use chalk to mark the flat side of the belt with an arrow indicating the direction of rotation (clockwise).
Installation Service Points
FLANGE INSTALLATION
- Install the flange as shown in the illustration.
TIMING BELT INSTALLATION
(1) With the timing belt tensioner bolt loosened, use a screwdriver to fully turn the timing belt tensioner as close to the engine mount as possible, and then temporarily tighten the tensioner bolt.
(2) Align the camshaft sprocket and the crankshaft sprocket timing marks.
(3) Install the timing belt in the following order, while making sure that the tension side of the belt is not slackened.
1. Crankshaft sprocket
2. Water pump sprocket
3. Camshaft sprocket
4. Tensioner pulley
Caution: After installing the timing belt, apply force to turn the camshaft sprocket counterclockwise, and recheck that the belt is fully tensioned and that each timing mark is in the proper position.
TIMING BELT TENSION ADJUSTMENT
(1) Initially loosen the fixing bolt of the tensioner pulley fixed to the engine mount side by 1/2 - 1/4 turn, and use the force of the tensioner spring to apply tension to the belt.
(2) Turn the crankshaft clockwise for two rotations, and recheck that the timing marks on each sprocket are aligned.
Caution: As the purpose of this procedure is to apply the proper amount of tension to the tension side of the timing belt by using the cam driving torque, turn the crankshaft only by the amount given above. Always turn the crankshaft clockwise.
(3) Check that all belt teeth in the section marked with an "*" are lifted up and that the teeth in each sprocket are engaged. Then secure the tensioner pulley.
(4) Lastly, lightly clamp the center of the span between the camshaft sprocket and the water pump sprocket on the belt tension side with your thumb and forefinger as shown in the illustration. Then check that the clearance A between the reverse surface of the belt and the inside of the under cover seal line is at the standard value.
Standard value: Approx. 30 mm (1.18 in.)
TIMING BELT LOWER COVER / TIMING BELT UPPER COVER INSTALLATION
Install the bolts, being careful not to mistake the bolt sizes.
Use:
A bolt: 6 x 18 (0.24 x 0.71)
B bolt: 6 x 30 (0.24 x 1.18)
[diameter x length mm (in.)]
CRANKSHAFT PULLEY / CRANKSHAFT BOLT INSTALLATION
NOTE: When installing the crankshaft pulley bolt, install so that the sharp side of the crankshaft pulley washer is at the pulley side.
(1) Apply engine oil to the bearing surface and to the thread section of the crankshaft bolt.
(2) Use the special tool to stop the crankshaft pulley from turning, and install the crankshaft bolt.
Caution: Hold the special tool securely so that it doesn't move.