Timing Belt: Service and Repair
TIMING BELT AND BELT TENSIONER
REMOVAL
1. Disconnect negative cable at battery.
2. Remove air cleaner assembly with MAF sensor (Mass Air Flow Sensor) and its outlet hose.
3. Remove air cleaner bracket.
4. Raise vehicle.
5. Remove clip after pushing center pin and then remove fender apron extension on right side.
NOTE: Do not push center pin too far in, or it will fall off into fender.
6. Remove water pump belt and its pulley. Loosen generator pivot bolts and its adjusting bolt and remove water pump belt.
7. Remove crankshaft pulley.
(1) LOCK crankshaft to loosen crankshaft timing belt pulley bolt and crankshaft pulley bolts, as shown in figure.
NOTE: To remove crankshaft pulley with engine assembly mounted on body, it is necessary to remove crankshaft timing belt pulley bolt. But if engine assembly is dismounted, bolt needs not be removed.
(2) Loosen crankshaft pulley bolts.
(3) Using special tool (17 mm socket), remove crankshaft timing belt pulley bolt and crankshaft pulley.
Special Tool (B): 09919-16020
8. Remove timing belt outside covers (upper & lower). To facilitate cover removal, loosen engine right side mounting bolt and push air cleaner bracket to the right.
9. For reinstallation of timing belt, set camshaft timing belt pulleys and crankshaft timing belt pulley as shown in image by turning crankshaft.
10. Remove tensioner stud and loosen tensioner bolt. Remove tensioner spring and damper, and then remove timing belt.
CAUTION:
- After timing belt is removed, never turn intake camshaft, exhaust camshaft and crankshaft independently more than such an extent as shown in image. If turned, interference may occur between pistons and valves and parts related to pistons and valves may be damaged.
- Never bend timing belt.
11. Remove tensioner and tensioner plate.
INSPECTION
1. Check timing belt for wear or crack. Replace it as necessary.
2. Check tensioner for smooth rotation and rattle.
INSTALLATION
1. Install tensioner plate to tensioner. Insert lug of tensioner plate into hole of tensioner.
2. Install tensioner and tensioner plate.
NOTE: Do not tighten tensioner bolt with wrench yet. Hand tighten only at this time. Check to ensure that plate movement in arrow direction as shown in image causes tensioner to move in the same direction. If no associated movement between plate and tensioner occurs, remove tensioner and plate again and reinsert plate lug into tensioner hole.
3. Turn camshaft timing belt pulleys (INTAKE AND EXHAUST) so that punch mark "I" on intake side camshaft timing belt pulley is aligned with mark on cylinder head cover, and punch mark "E" on exhaust side camshaft timing belt pulley is aligned with mark on cylinder head cover.
CAUTION:
- Don't turn each pulley beyond the allowable range.
NOTE: If pulleys don't stop in place due to counter force of valve spring, hold them in place by using bolts and flanged nuts as shown in image.
4. Check that punch mark on crankshaft timing belt pulley is aligned with arrow mark on oil pump case. If not, align two marks by turning crankshaft but be careful not to turn it more than its allowable turning range.
5. Install timing belt tensioner spring and damper. With three sets of marks aligned and tensioner plate pushed up, install timing belt on three pulleys in such a way that drive side of belt is free from any slack. And then install tensioner spring and spring damper. Hand-tighten tensioner stud.
NOTE: When installing timing belt, match arrow mark on timing belt with rotating direction of crankshaft. In this state, No.1 piston is at top dead center of compression stroke.
6. To take up slack of timing belt, turn crankshaft two rotations clockwise. After making sure that belt is free from slack, tighten tensioner stud first and then tensioner bolt to each specified torque. Then confirm again that three sets of marks are aligned respectively.
Tightening Torque:
(a): 9 - 12 Nm (0.9 - 1.2 kg) (7.0 - 8.5 ft lb)
(b): 24-30 Nm (2.4 - 3.0 kg) (17.5 - 21.5 ft lb)
7. Install timing belt outside cover (Upper & lower). Before installing, make sure that seal is between water pump and oil pump case.
Tightening Torque for timing belt outside cover bolt & nut:
9 - 12 Nm (0.9 - 1.2 kg) (7.0 - 8.5 ft lb)
8. Remove crankshaft timing belt pulley bolt and install crankshaft pulley. With crankshaft locked, tighten crankshaft pulley bolts and crankshaft timing belt pulley to specified torque.
Tightening Torque:
(c): 14 - 18 Nm (1.4 - 1.8 kg) (10.5 - 13.0 ft lb)
(d): 105 - 115 Nm (10.5 - 11.5 kg) (76.0 - 83.0 ft lb)
Special Tool (A): 09919-16020
9. Install water pump pulley and water pump drive belt.
Tightening Torque for water pump pulley bolt:
9 - 12 Nm (0.9 - 1.2kg) (7.0 - 8.5 ft lb)
10. Install air cleaner bracket. Tighten engine right side mounting bolt to specified torque.
11. Install air cleaner assembly with MAF sensor and its outlet hose.
12. Install fender apron extension on right side.
13. Connect negative cable at battery.