Remove/install Lanchester balancer

AR03.20-P-1100V

Remove/install Lanchester balancer

22.9.10

19.7.10

Value changed: Bolt for drive gear on Lanchester balance shaft M8

*BA03.20-P-1001-02C



Removing

Danger!

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.

AS00.00-Z-0010-01A



Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

1

Remove oil pan

Engine 271 with transmission 716.6

AR01.45-P-7500V

2

Spin engine at crankshaft in direction of rotation until piston in first cylinder is positioned on TDC

 Grooves (1) on drive wheels (8, 9) of the Lanchester balance shafts must be horizontal and must point in the direction of the guide pulley (3).

3

Identify drive chain (6) and drive gears (8, 9) to each other with the markings (2)

4

Remove bolts (4) of drive gear (8)

 Counterhold Lanchester balance shaft (11) at square with open wrench.



*271589000100

5

Remove drive gear (8) from Lanchester balance shaft (11)

 Press slide rail (5) at chain tensioner with a suitable assembly lever to the inside and remove drive gear (8) from Lanchester balance shaft (11), at the same time remove drive chain (6) from drive gear (8).

6

Remove drive chain (6) from drive gear (9) and guide pulley (3)

7

Detach Lanchester differential housing (7) from crankcase, to do so unscrew the screws (10)

 Slacken bolts (10) in reverse order of the tightening procedure:



Tightening pattern for Lanchester differential housing

AR03.20-P-1100-01QK

8

Remove Lanchester differential housing (7) from crankcase

9

Remove transfer tube (12) between oil pump and crankcase from crankcase

10

Remove oil pump

If replacing the Lanchester differential housing (7).

AR18.10-P-6020V



Install

11

Install oil pump

If replacing the Lanchester differential housing (7).

AR18.10-P-6020V

12

Clean separating surfaces at Lanchester differential housing (7) and at crankcase

 Replace gaskets (13).

13

Insert transfer tube (12) between oil pump and crankcase into the crankcase

14

Position Lanchester differential housing (7) at crankcase

 Pay attention to correct seating of the Gaskets (13), the guide sleeves (14) in the crankcase and of the transfer tube (12) between oil pump and crankcase.

15

Mount Lanchester differential housing (7) at crankcase, to do so screw in the screws (10)

 Observe tightening procedure of screws (10): 

Tightening pattern for Lanchester differential housing

AR03.20-P-1100-01QK



*BA03.20-P-1002-02C

16

Slide drive gear (8) onto Lanchester balance shaft (11) and fasten with bolt (4)

For this step, press Lanchester balance shaft (11) forward and twist if required.

When fastening the bolt (4), counterhold Lanchester balance shaft (11) at square with open wrench.



*BA03.20-P-1001-02C



*271589000100

17

Press slide rail (5) at chain tensioner to the inside and fit drive chain (6) onto the drive gears (8, 9) and the guide pulley (3)

 Press slide rail (5) to the inside with suitable assembly lever.

The scribe marks on the drive chain (6) must match the scribe marks of the drive gears (8, 9).

18

Crank engine at the crankshaft in direction of rotation and position the piston of the first cylinder on TDC

19

Check setting of Lanchester balance shafts

 Grooves (1) on drive wheels (8, 9) of the Lanchester balance shafts must be horizontal and must point in the direction of the guide pulley (3).

20

Installing oil pan

Engine 271 with transmission 716.6

AR01.45-P-7500V



Check

 Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running

Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

21

Check for leaktightness when engine is running

Number

Designation

Engine
271

BA03.20-P-1001-02C

Bolt, drive gear to Lanchester balance shaft

M10

Nm

40

M14

Nm

100

BA03.20-P-1002-02C

Bolt, Lanchester balance housing to crankcase

Stage 1

Nm

20

Stage 2

°

90