Balance Shaft and Oil Pump Chain

Balance Shaft and Oil Pump Chain

Special tools, testers and auxiliary items required

• Crankshaft Holder (3242)

• Diesel Injection Pump Locking Pin (3359)

• Key (T40049)

• 3.3 mm diameter drill bit

Removing

• Transmission removed.

- Remove the drive plate. Refer to => [ Drive Plate ] Service and Repair.

- Remove the timing chain covers. Refer to => [ Timing Chain Covers ] Service and Repair.

- Install the (T40049) to the crankshaft using two used drive plate bolts - arrows -.





- Remove the plug - arrow - from the upper oil pan.





CAUTION!
Risk of injury when touching the Top Dead Center (TDC) hole with your finger.

• Do not rotate crankshaft - 1 -.







- Install the (3242) in the hole and tighten it to 20 Nm. Rotate the crankshaft back and forth slightly to center the (3242) completely, if necessary.





CAUTION!
Reversing the running direction on a used balance shaft and oil pump chain can destroy it.

• Paint arrows to mark the running direction of the chain so it can be installed again.

- Lock the rear balance shaft on the engine using the (3359) and loosen the bolts - arrows - for the balance shaft chain sprocket.

- To protect against cuts, wrap the point and the cutting edges on an 3.3 mm diameter drill bit with insulating tape.





- Push the chain tensioner guide rail in - direction of arrow - and lock the chain tensioner with the drill bit - 4 -.

- Remove the bolts - 1 and 2 - and remove the chain tensioner, chain sprocket - 3 - for the balance shaft and the chain.

Installing





• Tightening specifications, refer to => [ Balance Shaft and Oil Pump Chain Overview ] Description and Operation.

• Secure the crankshaft - 1 - in TDC position using (3242).

- Lock the rear balance shaft - arrow - to the engine using (3359).





- Install the chain tensioner with the chain and the drive chain and the balance shaft - 3 - chain sprocket.





• The slots in the chain sprocket - 3 - must be in the center position to the threaded holes in the balance shaft.

- Tighten the chain tensioner bolts - 1 and 2 -.

• Ignore - item 4 - and the - arrow -.

- Install the chain sprocket bolts - arrows - loosely.





• It must still be possible to rotate the chain sprocket on the balance shaft and it must not tip.

- Remove the drill bit from the alignment hole.





- Push a screwdriver in the - direction of the arrow - against the chain tensioner guide rail while tightening the chain sprocket bolts - 1 -.

- Remove the (3359) from the balance shaft.

The rest of the installation is performed in reverse order of removal, noting the following:

- Install the timing chain covers. Refer to => [ Timing Chain Covers ] Service and Repair.

- Install the drive plate. Refer to => [ Drive Plate ] Service and Repair.

- Fill the engine oil and check the oil level.