Remove/install automatic transmission auxiliary oil pump

AR27.57-S-0652EA

Remove/install automatic transmission auxiliary oil pump

20.07.2020

Transmission

725.0 in model 447, 448

1

Automatic transmission auxiliary oil pump

2

Electrohydraulic controller unit

3

Bolts

1

Automatic transmission auxiliary oil pump

2

Electrohydraulic controller unit

4

Bolts

5

Guide pins

 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

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

AH00.00-P-0020-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

General information on repair work on transmission

AH27.00-S-1000-01PS



Remove

1

Remove electrohydraulic controller unit (2).

AR27.19-S-0200EA

2

Unscrew bolts (3).

3

Unscrew screw/bolts (4).

4

Remove auxiliary oil pump of automatic transmission (1) from electrohydraulic controller unit (2).



Install

5

Align auxiliary oil pump of automatic transmission (1) using the guide pin (5) at the electrohydraulic controller unit (2).

6

Tighten new screws (4).

 Screw/bolt, auxiliary oil pump to shift valve body cover

*BA27.19-N-1002-01EA

7

Tighten new screws (3).

 Screw/bolt, electrical connection for auxiliary oil pump to control unit

*BA27.19-N-1004-01EA

8

Install electrohydraulic controller unit (2).

AR27.19-S-0200EA

 Electrohydraulic controller unit

Number

Designation

Transmission 725.0 in model 447, 448

BA27.19-N-1002-01EA

Screw/bolt, auxiliary oil pump to shift valve body cover

Stage 1

Nm

4

Stage 2

°

90

 Electrohydraulic controller unit

Number

Designation

Transmission 725.0 in model 447, 448

BA27.19-N-1004-01EA

Screw/bolt, electrical connection for auxiliary oil pump to control unit

Nm

5