Remove/install oil lines of oil cooling for automatic transmission

AR27.55-S-0600EA

Remove/install oil lines of oil cooling for automatic transmission

02.09.2020

Transmission

725.0 in model 447 with engine 654.9

1r

Return flow pipe

2

Automatic transmission oil pan

4

Torque converter housing

1v

Feed line

3

Automatic transmission fluid cooler

 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

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

 Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

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

Shift automatic transmission into neutral position.

2

Remove lower engine compartment paneling.

AR61.20-S-1105E

 Ensure that vehicle is level in longitudinal and transverse direction on vehicle lift.

3

Thoroughly clean automatic transmission oil cooler (3) and the area surrounding it.

Assembly cleaner

*BR00.45-Z-1028-04A

4

Remove return line (1r) and feed line (1v) from automatic transmission oil cooler (3) and collect escaping automatic transmission fluid for determining the quantity of automatic transmission fluid.

AR27.10-S-0501-03EA

Assembly cleaner

*BR00.45-Z-1028-04A

 Record plug

*129589009100

5

Seal openings in automatic transmission oil cooler (3) using stop plugs.

 Record plug

*129589009100

6

Remove return line (1r) and feed line (1v) from torque converter housing (4) collect escaping automatic transmission fluid for determining the quantity of automatic transmission fluid.

AR27.10-S-0501-03EA

Assembly cleaner

*BR00.45-Z-1028-04A

 Record plug

*129589009100

7

Remove return line (1r) and feed line (1v) downwards.

8

Seal openings in torque converter housing (4) with stop plugs.

 Record plug

*129589009100



Install

9

Remove stop plugs from openings in torque converter housing (4).

10

Mount return line (1r) and feed line (1v) onto torque converter housing (4).

AR27.10-S-0501-03EA

11

Remove stop plugs from openings in automatic transmission oil cooler (3).

12

Mount return line (1r) and feed line (1v) onto automatic transmission oil cooler (3).

AR27.10-S-0501-03EA

13

Fill automatic transmission with automatic transmission fluid.

AR27.00-S-0270EA

 Install bottom engine compartment lining only after the leak test.



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

14

Perform engine test run and check automatic transmission in area of return line (1r) and feed line (1v) for leak tightness.

15

Install lower engine compartment paneling.

AR61.20-S-1105E

Repair materials

Number

Designation

Order number

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01