Remove/install automatic transmission auxiliary oil pump

AR27.57-D-0652TSR

Remove/install automatic transmission auxiliary oil pump

06.03.2020

Transmission

722.9 in model 907

Modification notes

11.09.2018

Method adapted

Operation steps 8, 13

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-1000-04TS

Topical note

Special instructions for lifting and supporting vehicle

AH00.60-N-0100-01TS

2

Remove lower engine compartment paneling.

If installed.

AR61.20-D-1105TS

 Installation: Install engine compartment lining at bottom only after the leak test of the auxiliary oil pump (1) has been carried out.

3

Remove underbody paneling.

If installed.

AR61.30-D-1001TS

 Installation: Install underfloor paneling only after leak testing the auxiliary oil pump (1).

4

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

5

Drain fluid from transmission.

AR27.00-D-0200-01TS


After loosening of the overflow pipe, it is imperative to remove oil pan and install overflow pipe again at the oil pan.
Otherwise the transmission may be damaged.

 Only drain transmission oil from oil pan.

 Collect escaping transmission oil to determine quantity of transmission oil.

 Commercially available devices/tools
Collection bowl

 Drift

*722589031500

6

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

AR27.10-D-0502-01TS

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
Collection bowl

 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

7

Disconnect electrical connector (3).

8

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

9

Remove rear engine mount from automatic transmission.

 Screw/bolt, rear engine mount to transmission

*BA22.10-N-1001-01TSR

10

Remove propeller shaft from flange at automatic transmission.

AR41.10-D-0050TS

 Hang propeller shaft to one side.

11

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.

12

Remove screws/bolts (4).

 Screw/bolt, auxiliary oil pump to transmission housing

*BA27.55-N-1009-01I

13

Remove auxiliary oil pump (1).

 Seal connections. Collect escaping transmission oil.

 Commercially available devices/tools
Collection bowl

 Installation: Replace plain couplers (5).

 Record plug

*129589009100

14

Install in the reverse order.

15

Fill automatic transmission with oil.

AR27.00-D-0270TSR

 The function and leak tightness of the automatic transmission are also checked here.



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

16

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 907

Engine 651 in model 907

BA22.10-N-1001-01TSR

Screw/bolt, rear engine mount to transmission

Nm

40

40

 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