Remove/install automatic transmission oil pan

AR27.10-S-7031PS

Remove/install automatic transmission oil pan

06.03.2020

Transmission

722.9 in model 470, 471 with engine 642

01

Drift

3

Overflow pipe

5

Seal

1

Transmission housing

4

Oil pan

6

Sprag

2

Bolts

3

Overflow pipe

5

Seal

8

Solenoids

 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 with aluminum screws/bolts

AH00.00-P-0006-01RM

Topical note

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

AH00.00-P-0020-01A

Topical note

General information on repair work on transmission

AH27.00-S-1000-01PS



Remove

1

Remove front section of rear engine carrier.

AR22.10-S-4360PD

2

Thoroughly clean oil pan (4) and surrounding area.

Assembly cleaner

*BR00.45-Z-1028-04A

3

Drain fluid from transmission.

AR27.00-S-0200-01PS

 Remove drain screw and pry off overflow pipe (3) from base (arrow) with  drift (01). The remaining transmission oil drains out immediately after prying off.
Drain transmission oil from oil pan (4) only.
Collect escaping transmission oil to determine quantity of transmission oil.

 Drift

*722589031500

4

Remove screws (2) and remove sprag (6) as well as oil pan (4).

5

Remove seal (5).

6

Remove magnets (8) from oil pan (4).

7

Remove overflow pipe (3) from oil pan (4).



Clean

8

Clean sealing surfaces on the transmission housing (1).

Assembly cleaner

*BR00.45-Z-1028-04A

9

Clean oil pan (4).

Assembly cleaner

*BR00.45-Z-1028-04A

10

Clean overflow pipe (3).

Assembly cleaner

*BR00.45-Z-1028-04A

11

Clean magnets (8).

Assembly cleaner

*BR00.45-Z-1028-04A



Check

12

Check overflow pipe (3) for damage.

If damage is visible.



Replace overflow pipe (3).



Install

13

Insert magnets (8) into oil pan (4).

14

Mount overflow pipe (3) flush to flange (arrow) on oil pan (4).

15

Attach new seal (5) to oil pan (4).

16

Mount oil pan (4) using sprags (6) and bolts (2) onto transmission housing (1).

 Bolt, oil pan to transmission housing

*BA27.10-N-1006-04B

17

Install front section of rear engine carrier.

AR22.10-S-4360PD

18

Fill automatic transmission with oil.

AR27.00-S-0270PS

 Complete automatic transmission

Number

Designation

Transmission 722.9

BA27.10-N-1006-04B

Bolt, oil pan to transmission housing

Stage 1

Nm

4

Stage 2

°

180

Repair materials

Number

Designation

Order number

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01