Balance Shaft Module, Removing and Installing

Balance shaft module, removing and installing

Engine code BHW

Special tools, testers and auxiliary items required





^ Torque wrench (5 to 50 Nm) V.A.G 1331
^ Locking tool T10255
^ Wrench (diameter 3 mm)

Removing
- Set engine cylinder 1 to TDC.
- Remove toothed belt.
- Drain engine oil.
- Remove oil pan.
- Remove sealing flange.





- Secure balance shaft using Locking tool T10255.

Note: The locking tool T10255 must engage the groove in the balance shaft - 1 -.





- Remove bolts from cover - arrows - and remove cover.





- With a screwdriver, carefully press center of tensioning rail in - direction of arrow - and fix chain tensioner in place as shown using a wrench (diameter 3 mm) - 1 -.
- Remove bolts - 2 - for chain tensioner.
- Remove bolts - 3 -.
- Remove chain tensioner.
- Mark running direction of chain with a water-proof marker.





- Loosen bolts - arrows - of chain sprocket and remove chain sprocket together with chain.





- Remove balance shaft module. When doing this, unscrew bolts - arrows - from outside toward inside in a diagonal sequence.

Installing

Conditions
^ Engine cylinder 1 is at TDC.
^ Balance shaft is secured with locking tool T10255.

Note: Before installing, verify that the assembly sleeves are present in the balance shaft module.

- Install balance shaft module and tighten bolts to 8 Nm.
- Then, fasten bolts in following sequence to applicable torque specification.

M7 = 13 Nm plus an additional 1/4 turn (90°)





M8 = 20 Nm plus an additional 1/4 turn (90°)
- Place chain on crankshaft chain sprocket.
- Place chain sprocket into chain.
- Place chain tensioner with chain onto shaft so that bolt holes of shaft are located in middle of slots of chain sprocket.
- Tighten new bolts by hand. Unscrew bolts in mating area by approx. 1 turn.
- Install chain tensioner.





- Tighten bolt - 3 - to 20 Nm and then bolt - 2 - to 10 Nm.
- Pull out wrench - 1 - from chain tensioner.
- Fasten bolts for chain tensioner. Tightening torque: 10 Nm plus an additional 1/4 turn (90°)
- Install cover and fasten it to 8 Nm.
- Remove locking tool.
- Install sealing flange.
- Install oil pan.
- Toothed belt, installing.