Timing Chain: Service and Repair

Drive Chain

Special tools, testers and auxiliary items required

• Press Tube (30 - 100)

• Thrust Piece (40 - 105)

• Kukko 44/1 Two Arm Puller

• Protective gloves

Removing

- Removing oil pan. Refer to => [ Oil Pan ] Oil Pan

- Remove the bolts - arrows - and the upper toothed belt guard.






Components could be destroyed by the toothed belt jump off.

• Only rotate the crankshaft in the direction of engine rotation.

- Turn the crankshaft by the toothed belt crankshaft sprocket bolt until the camshaft sprocket is at "TDC".

• The marking on the camshaft sprocket must align with the arrow on the toothed belt guard - top arrow -.






• The notch on the vibration damper must align with the arrow on the toothed belt guard - bottom arrow -.

- Remove the guard; if necessary, release the tabs through the openings - arrows - with a small screwdriver.






- Loosening the bolt for the oil pump chain sprocket, while doing this counterhold the crankshaft by the toothed belt sprocket bolt.






- Release the tension on the chain rail with a screwdriver - arrow - and secure it with the 3 mm socket wrench - 1 -.






- Remove the belt pulley side sealing flange. Refer to => [ Sealing Flange, Belt Pulley Side ] Service and Repair.

Risk of destroying due to reversed running direction on a used drive chain.

• Mark the drive chain running direction with arrows using paint for installation later. Do not mark the chain using a punch, notch or similar.

- Remove the chain sprocket and oil pump drive chain.






- Remove the drive chain sprocket using the Kukko 44/1 tow arm puller - 2 -; while protecting crankshaft end with the (40 - 105) - 1 -.






Installing

Installation is done in reverse order, observe the following:

Risk of burning.

• Wear protective gloves!

- Heat the drive chain sprocket in a warming oven at 220 °C (428 °F) for approximately 15 minutes.

• Installed position: the wide drive chain sprocket collar faces the engine.

- Position the drive chain sprocket on the shaft stub with pliers and slide it onto the crankshaft as far as the stop with a (30 - 100).






- When reinstalling a used camshaft timing chain, note running direction marking.

- Install the belt pulley side sealing flange. Refer to => [ Sealing Flange, Belt Pulley Side ] Service and Repair.

- Install the balance shaft module with oil pump. Refer to => [ Balance Shaft Module with Oil Pump ] Balance Shaft Module With Oil Pump.