Timing Belt: Service and Repair
TIMING BELT AND BELT TENSIONERRemove or Disconnect
1. Crankshaft timing pulley.
2. Retaining clips and engine wiring harness from tinting belt cover.
Fig. 3 Timing Belt Assembly:
3. Eight bolts, one nut and timing belt cover from vehicle.
Important
Fig. 4 Camshaft Timing Mark:
Lower Timing Marks:
- Before removing timing belt, align upper and lower timing marks by turning crankshaft.
Timing Belt Tensioner & Belt:
4. Loosen tensioner bolt and stud, and remove belt from crankshaft timing belt pulley and camshaft timing belt pulley after pushing up the tensioner plate fully by finger.
NOTICE: After timing belt is removed, never turn camshaft and crankshaft independently. If turned, interference may occur among pistons and valves, and parts related to pistons and valves may be damaged.
5. Tensioner, tensioner plate, tensioner spring and spring damper.
Inspect
- Timing belt for wear or cracks. Replace as necessary.
- Timing belt tensioner for smooth rotation.
Install or Connect
Timing Belt Tensioner & Tensioner Plate:
1. Tensioner plate to timing belt tensioner. Insert tensioner plate lug into the timing belt tensioner hole.
Fig. 7 Tensioner Adjustment:
2. Timing belt tensioner and tensioner plate to cylinder block; secure with one bolt and one stud. Do not tighten fully. check to make sure that plate movement in direction of arrow cause tensioner to move in the same direction. If it does not, remove timing belt tensioner and tensioner plate and reinsert tensioner plate lug in timing plate tensioner hole.
3. Check that timing mark on camshaft timing belt pulley is aligned with "V" mark on cylinder head cover. If not align the two marks by turning the camshaft but be careful not to turn it more than its allowable turning range.
4. Check that punch mark on crankshaft timing belt pulley is aligned with arrow mark on oil pump case. If not, align the two marks by turning crankshaft but be careful not to turn it more that its allowable turning range.
NOTICE: Before installing timing belt to camshaft timing belt pulley and crankshaft timing belt pulley:
A. Remove cylinder head cover.
B. Loosen all valve adjusting screws on intake and exhaust rocker arms all the way after loosening each lock nut.
This is to permit the free rotation of camshaft and prevent damage to valves when adjusting timing belt. If camshaft does not rotate freely, timing belt cannot be properly adjusted.
1. Timing belt, tensioner spring, and spring damper. With two sets of marks aligned and tensioner plate pushed up, install timing belt is free from any slack. Then install the tensioner stud only.
Important
- When installing timing belt, match arrow mark on timing belt with rotating direction of crankshaft.
2. To take up slack in timing belt, turn crankshaft two rotations clockwise after installing it. After making sure that belt is free from slack, tighten timing belt tensioner stud first and tensioner bolt.
Tighten
- Timing belt tensioner stud to 11 N.m (97 lb. in.).
- Timing belt tensioner bolt to 27 N.m (20 lb. ft.).
3. Confirm again that both sets of timing marks are aligned properly.
Important
- Before installing timing belt cover, make sure that coolant pump-to-oil pump case seals and coolant pump-to-cylinder head seals are in place.
4. Timing belt cover; secure with eight bolts and one nut.
Tighten
- Timing belt cover nut and bolts to 11 N.m (97 lb. in.).
5. Adjust valve last.
6. Crankshaft timing pulley.