Removal and installation the crankshaft pulley (Opel Astra G)

On 2.0L engines, a new sprocket mounting bolt will be required during installation.

Engines 1.7 l

Cm. Removal and installation the crankshaft pulley (SOHC Gasoline Engine Repair Procedures Without Removing Them From The Vehicle).

2.0L Engines

Removal

1. Set the parking brake, jack up the front of the car and place it on stands. Remove the right front wheel and (with appropriate equipment) crankcase protection.

2. Remove the accessory drive belt (see Chapter Routine maintenance), - first mark the direction of rotation of the belt on the tape.

3. Loosen the crankshaft pulley mounting bolt - have an assistant engage high gear and fully depress the foot brake pedal to prevent the crankshaft from turning. On automatic transmission models, loosen one of the torque converter mounting bolts and secure the drive plate to the transmission dome using a steel bar and a pair of suitable bolts fitted with washers. If the engine is removed from the vehicle, block the flywheel/drive plate (see Removal, checking condition and installing flywheel/drive disk).

4. Unscrew the fastener and remove the pulley from the crankshaft journal. After removing the pulley, check the condition of the seal - replace the latter if necessary.

Installation

1. Carefully install the pulley on the crankshaft journal, making sure that the keyway fits correctly on the key. Make sure that the pulley is completely seated - try not to damage the working edges of the seal.



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2. Screw in a new bolt with a washer seated on it.



3. Lock the crankshaft from turning using the same method used for removal, tighten the mounting bolt to stage 1, then tighten it to the corners, stages 2 and 3 (use a protractor attachment or use paint or a marker to make reference marks).



4. Install the accessory drive belt (see Chapter Routine maintenance), - make sure that the original direction of rotation is observed (see markings applied during removal).



5. Install the crankcase guard and front wheel.

6. Lower the vehicle to the ground, then tighten the wheel fasteners to the required torque.