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Changing the balancer shaft chain

Changing the balancer shaft chain

To remove (in car)


1. Remove the power train, refer to Removing the power train

2. Zero the engine by turning the crankshaft in the direction of rotation of the engine until the marks on the pulley and timing cover are aligned.


3. Remove the crankshaft pulley.

4. Remove the cylinder head, oil sump and timing cover. Refer to Timing cover

5. Remove the top chain guide and chain tensioner for the balancer-shaft chain.


6. Remove the pivoted balancer shaft chain guide.

7. Remove the idler sprocket and balancer shaft chain.

8. Check that the sprockets and chain guides are in good condition. Don't forget to check the fixed chain guide that is common to the timing and balancer shaft chains. Change any parts as necessary. Observe that the balancer shaft sprockets are different.

Tightening torque, balancer shaft sprocket 25 Nm (18 lbf ft)

Tightening torque, fixed guide for timing and balancer shaft chains 10 Nm (7 lbf ft)

9. Remove the balancer shaft sprockets.


To fit


1. Check that the chain tensioner plunger is correctly positioned. If the plunger can be depressed fully it must be turned 180°.

2. Turn the plunger on the balancer shaft chain tensioner 90°, press it in and turn it back 90°. Lock the tensioner in position by inserting a paperclip or similar into the hole on the top of the tensioner.


3. Fit the chain tensioner with the pivoted chain guide.

Tightening torque 10 Nm (7 lbf ft)

Important

Ii is very important for the function that the correct tightening torque is used when fitting.


4. Fit the fixed chain guide.

Tightening torque 10 Nm (7 lbf ft)


5. Align the marks on the balancer shafts with the marks on the top of each bearing housing.

6. Fit the chain to the sprocket and fit this along with the idler sprocket.

Tightening torque 25 Nm (18 lbf ft)

7. Check the position of the balancer shafts and release the chain tensioner.

8. Make sure there is a certain amount of play by pressing in the tensioner. Rotate the crankshaft one revolution and then check that the setting is correct.

9. Fit the oil sump, cylinder head and timing cover. See Timing cover

10. Fit the pulley to the crankshaft.

Tightening torque 175 Nm (130 lbf ft)

11. Fit the power train into the car, refer to Fitting the power train