Remove/install automatic transmission fluid cooler

AR27.55-P-1000MRM

Remove/install automatic transmission fluid cooler

04.03.2020

Transmission

725.0 in model 167 with engine 274.9

1

Oil cooler

2

Oil line

3

Oil line

4

Coolant hose

5

Coolant hose

6

Retaining clamp

 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

 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

 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 avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Notes on automatic transmission

AH27.19-P-0001-01NKB

 

Remove/install

1

Slowly open cap of coolant expansion reservoir, reduce overpressure, and close cap again.

AR20.30-P-4949MRK

2

Remove front and center lower engine compartment paneling.

AR61.20-P-1105ME

 Installation: Install front and lower center engine compartment lining only after leak test.

3

Thoroughly clean connections of oil lines (2, 3) on oil cooler (1).

Assembly cleaner

*BR00.45-Z-1028-04A

4

Remove oil lines (2, 3) from oil cooler (1) and seal openings using suitable stop plugs.

AR27.10-P-0501-03LF

 Collect the oil in a suitable container.

Assembly cleaner

*BR00.45-Z-1028-04A

 Record plug

*129589009100

5

Clamp off coolant hoses (4, 5).

 Clamp

*000589403700

6

Remove coolant hoses (4, 5) from oil cooler (1) and seal openings using suitable stop plugs.

AR20.20-P-7441-01RQ

 Collect coolant in a suitable container.

 Record plug

*129589009100

7

Push retaining clamp (6) upward and remove oil cooler (1).


Carefully push retaining clamp (6) upward.
Otherwise, the retaining clamp (6) will be damaged.

If retaining clamp (6) is damaged:



Secure oil cooler (1) at marked area (arrow) with a repair screw and washer.

8

Install in the reverse order.

9

Check oil level in the automatic transmission with the ultrasound device; correct if necessary.

Transmission 725.0 in model 167 with engine 274.9

AR27.00-P-0270-02EWH



000 588 09 19 00 Oil level sensor

WS27.00-P-0188B



Connect/disconnect diagnostic unit

AD00.00-P-2000-06ME



000 588 06 82 00 Oil dispenser

WS18.00-P-0026B



Automatic transmission fluids (ATF) (specification 236.17)

BB00.40-P-0236-17A

MB Plastilube brake paste (brownish)

*BR00.45-Z-1084-06A

Assembly cleaner

*BR00.45-Z-1028-04A

 Socket wrench

*724589010900

 Adapter

*725589039000

10

Correct coolant level in expansion reservoir.

AR20.30-P-4949MRK

11

Connect diagnostic unit and perform venting routine for coolant.

If required.



AD00.00-P-2000-06ME



Check

12

Check engine cooling system for leak tightness.

AR20.00-P-1011MRK

13

Conduct engine test run and, while doing so, check automatic transmission for proper operation and oil cooler (1) and connections of oil lines (2, 3) for leak tightness.

14

Install the front and lower center engine compartment lining.

AR61.20-P-1105ME

Repair materials

Number

Designation

Order number

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01

BR00.45-Z-1084-06A

MB Plastilube brake paste (brownish)

A 002 989 37 51