Variable Valve Timing Actuator: Service and Repair
Operation number: 21557-2
VVT unit
Note! Some variation in the illustrations may occur, but the essential information is always correct.
Removal
Remove the front crankshaft seal. Refer to: crankshaft front seal, B6324S5 Service and Repair
Rotate the engine to the zero position. 999 7257 Wrench 999 7257 Wrench
999 7261 Position sensor 999 7261 Position Sensor
Remove the outer timing cover. Refer to: Outer timing cover gasket, B6324S5 Gasket, Outer Timing Cover
Raise the tensioner's lock plate (1) slightly and press the tensioner together (2). Secure with a steel wire, drill or the like of - 2 mm in the tensioner hole (3).
Attach the following items:
- 999 7263 Counterhold 999 7263 Counterhold
- 999 7264 Counterhold 999 7264 Counterhold
- 999 7272 TORX 60 999 7272 Torx(R) 60
Fit the VVT units without chain.
Torque: VVT unit, center screw, 30 Nm
Check that the VVT units are locked by turning them in both directions.
Remove the VVT units.
Installation
Install the VVT units together with the chain. Do not tighten.
M7. Refer to: Tightening torque, B6324S5 Tightening Torque
Attach the following items:
- 999 7263 Counterhold 999 7263 Counterhold
- 999 7264 Counterhold 999 7264 Counterhold
- 999 7272 TORX 60 999 7272 Torx(R) 60
Tighten centre bolt, exhaust camshaft. Refer to: Tightening torque, B6324S5 Tightening Torque
Tighten centre bolt, inlet camshaft. Refer to: Tightening torque, B6324S5 Tightening Torque
Remove the following items:
- 999 7263 Counterhold 999 7263 Counterhold
- 999 7264 Counterhold 999 7264 Counterhold
- 999 7272 TORX 60 999 7272 Torx(R) 60
Install the outer timing cover. Refer to: Outer timing cover gasket, B6324S5 Gasket, Outer Timing Cover.
Remove special tool 999 7261 Position sensor 999 7261 Position Sensor
999 7257 Wrench 999 7257 Wrench
M12. Refer to: Tightening torque, B6324S5 Tightening Torque
999 7271 Support 999 7271 Support
Fit the front crankshaft seal. Refer to: crankshaft front seal, B6324S5 Service and Repair.