Balance Shaft Module With Oil Pump, Assembly Overview

Balance shaft module with oil pump, assembly overview





1 - Chain guard

2 - Chain
^ Mark direction of travel (installation position) using color marking before removing

3 - Fitting sleeves

4 - Intermediate plate

5 - Balance shaft module with oil pump
^ Before installing, check to be sure both alignment bushings are present (for centering oil pump/cylinder block)

6 - Bolt
^ 9 Nm

7 - Cover
^ Prevents engine oil from foaming up

8 - Bolt
^ 20 Nm

9 - Bolt
^ 8 Nm

10 - Oil intake pipe
^ Clean strainer if dirty

11 - O-ring
^ Replace

12 - Bolt
^ Replace
^ Note different length of bolts
^ Tightening order

13 - Bolt
^ Replace
^ Note different length of bolts
^ Tightening order

14 - Outer rotor
^ Check contact surfaces for groove build-up
^ Marking must be visible

15 - Inner rotor
^ Check contact surfaces for groove build-up

16 - Oil pump cover

17 - Chain sprocket

18 - Bolt
^ 20 Nm plus an additional 90 ° turn
^ Replace

19 - Chain tensioner with tensioning rail
^ Preload to install

20 - Bolt
^ 15 Nm





Bolt allocation for balance shaft housing
A - Hex collar bolt M7x40
B - Hex collar bolt M7x70
C - Hex collar bolt M7x90
D - Hex collar bolt M7x55
E - Sealing plug with O-ring





Balance shaft housing tightening sequence
- Proceed as follows:
- Hand-tighten bolts - A -.
- Tighten bolts - arrows - in a diagonal sequence from inside to outside to 15 Nm.
- Turn bolts - arrows - an additional 90 ° (1/4 turn) in a diagonal sequence from inside to outside using a rigid wrench.