Remove/install auxiliary oil pump for automatic transmission

AR27.30-D-0651WE

Remove/install auxiliary oil pump for automatic transmission

06.03.2020

Transmission

722.9 in model 906

with code MJ7 (ECO start/stop function)

Transmission

722.9 in model 906

with code MJ8 (ECO start/stop function)

Modification notes

11.09.2018

Method adapted

Operation steps 3, 7, 10, 11, 12, 15

1

Auxiliary oil pump

4

Bolts

2

Oil line

5

Oil guide pipe

3

Electrical connector

 Danger

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

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

AS00.00-Z-0010-01A

 Caution

Risk of injury to skin and eyes due to handling of transmission oil. Health risk caused by swallowing transmission oil

Wear protective gloves, protective clothing and safety glasses.
Do not pour transmission oil into beverage bottles.

AS00.40-Z-0001-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Notes on automatic transmission

AH27.19-P-0001-01NKB

 

Remove/install

1

Raise vehicle.

AR00.60-D-1000H

2

Remove bottom engine compartment paneling.

Transmission 722.9 in model 906
with code MJ7 (ECO start/stop function)
with code XM1 (Noise reduction)
Transmission 722.9 in model 906
with code MJ8 (ECO start/stop function)
with code XM1 (Noise reduction)

3

Clean oil pan of automatic transmission and surrounding area thoroughly.


Cleanliness must be ensured when performing work on the automatic transmission.
Otherwise, even the smallest foreign particles in the hydraulic components of the automatic transmission can lead to malfunctions or total failure of the automatic transmission.

 Use lint-free cleaning cloths when cleaning. Chamois leathers are the most suitable.

Assembly cleaner

*BR00.45-Z-1028-04A

4

Remove drain screw from oil pan.


Do not pry off overflow pipe from the base of the oil pan.
Otherwise the oil pan has to be removed to enable the overflow pipe to be mounted again.

 Collect escaping transmission oil.

 Commercially available devices/tools
Collecting pan

 Drain screw on oil pan

*BA27.10-N-1005-04B

If the overflow pipe has been pried off from the base of the oil pan.



Fit overflow pipe of oil pan.

AR27.10-D-7030WE

5

Remove oil line (2) on left of automatic transmission.

AR27.10-D-0502-01W

Topical note

Notes on threaded connections fastened using a tightening angle-based tightening process

AH00.00-P-0020-01A

 Seal connections. Collect escaping transmission oil.

 Commercially available devices/tools
Collecting pan

 Bolt, oil line to transmission housing

*BA27.55-N-1002-01I

 Bolt, dual clamp to oil line

*BA27.55-N-1004-01I

 Record plug

*129589009100

6

Disconnect electrical connector (3).

7

Support the automatic transmission.



000 588 11 62 00 Major assembly mount

WS01.00-P-0092B



000 588 10 62 00 Support plate

WS26.00-P-3309B

8

Remove rear engine mount from automatic transmission.

 Screw/bolt, rear engine mount to transmission

*BA22.10-N-1006-01S

9

Remove propeller shaft from flange at automatic transmission.

AR41.10-D-0040WE

 Hang propeller shaft to one side.

10

Lift automatic transmission carefully.



000 588 11 62 00 Major assembly mount

WS01.00-P-0092B



000 588 10 62 00 Support plate

WS26.00-P-3309B


Position entire surface of mounting plate at oil pan of automatic transmission.
Otherwise, the oil pan of the automatic transmission or the component parts underneath it may be damaged.

11

Remove screws/bolts (4).

 Screw/bolt, auxiliary oil pump to transmission housing

*BA27.55-N-1009-01I

12

Remove auxiliary oil pump (1).

 Seal connections. Collect escaping transmission oil.

 Commercially available devices/tools
Collecting pan

 Installation: Replace plain couplers (5).

 Record plug

*129589009100

13

Install in the reverse order.

14

Fill automatic transmission with oil.

Transmission 722.9 in model 906
with code MJ7 (ECO start/stop function)
Transmission without guide tube for oil dipstickTransmission 722.9 in model 906
with code MJ8 (ECO start/stop function)Transmission without guide tube for oil dipstick

AR27.00-D-0270WE

Transmission 722.9 in model 906
with code MJ7 (ECO start/stop function)
Transmission with guide tube for oil dipstickTransmission 722.9 in model 906
with code MJ8 (ECO start/stop function)Transmission with guide tube for oil dipstick

AR27.00-D-0101WE



Check

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

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

AS00.00-Z-0005-01A

15

Check auxiliary oil pump (1) for leak tightness with engine running.

Notes on evaluating leakages

AH00.00-N-0011-01A

 Visual inspection only.

 Engine mounts, engine supports

Number

Designation

Engine 642 in model 906

Engine 646 in model 906

BA22.10-N-1006-01S

Screw/bolt, rear engine mount to transmission

Nm

40

40

 Engine mounts, engine supports

Number

Designation

Engine 651 in model 900, 906

BA22.10-N-1006-01S

Screw/bolt, rear engine mount to transmission

Nm

40

 Complete automatic transmission

Number

Designation

Transmission 722.9

BA27.10-N-1005-04B

Drain screw on oil pan

Nm

22

 Transmission oil cooling

Number

Designation

Transmission 722.9

BA27.55-N-1002-01I

Bolt, oil line to transmission housing

Banjo bolt

Stage 1

Nm

5

Stage 2

°

90

Hexalobular bolt

Nm

12

 Transmission oil cooling

Number

Designation

Transmission 722.9

BA27.55-N-1004-01I

Bolt, dual clamp to oil line

Nm

8

 Transmission oil cooling

Number

Designation

Transmission 722.9

BA27.55-N-1009-01I

Screw/bolt, auxiliary oil pump to transmission housing

Nm

8

Repair materials

Number

Designation

Order number

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01