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Timing chain tensioner, A20NFT/LHU

Timing chain tensioner, A20NFT/LHU

To remove


1. Remove camshaft cover with gasket, see Camshaft cover with gasket, A20NFT/LHU .

2. Remove turbo coolant pipe, see Coolant pipe, turbo

3. Remove the chain tensioner (A). Use 83 96 129 Oil filter tool, and camshaft drive chain tensioner .


4. Remove the lock ring (A) from the chain tensioner and remove the piston.



To fit


1. Turn the camshaft drive tensioner clockwise with a screwdriver until it engages in the tensioned position (A).


2. Place the plunger in the chain tensioner sleeve. Fit the circlip and check that it is fitted correctly in the groove (A).

Note

Check that the O-ring and gasket are intact. If damaged, replace the chain tensioner assembly.



3. Fit the chain tensioner.

Tightening torque 75 Nm (55 lbf ft)


4. Release/activate the chain tensioner by carefully pressing on the timing chain or chain guide (as shown in the illustration). Use a screwdriver (A). Check that the tensioner has released.


5. Fit turbo coolant pipe, see Coolant pipe, turbo .

6. Fit Camshaft cover with gasket, A20NFT/LHU .