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Remove/Install Automatic Transmission Oil Cooler - AR27.55-P-1000MSC

Transmission 725.0 in model 167 with engine 176, 256.9 

MODIFICATION NOTES

17.07.2019 Bleeding routine added. AS 9  

Shown on model 167 with engine 256.9 

Fig 1: Automatic Transmission Oil Cooler Components Location - Transmission 725.0 In Model 167 With Engine 176, 256.9 (Shown With Engine 256.9)
G14790520Courtesy of MERCEDES-BENZ USA
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
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
  Notes on automatic transmission   AH27.19-P-0001-01NKB 
REMOVINGINSTALLING Remove/install     
1 Remove upper engine cover.    
REFER TO MAINTENANCE   Transmission 725.0 in model 167 with engine 176 AP01.10-P-2405-01M
    Transmission 725.0 in model 167 with engine 256.9 AR01.10-P-2405MSC
    INSTALLATION IMPORTANT Only install upper engine cover after the leak test.  
2 Remove engine air intake duct upstream of air filter.    
3 Remove oil lines (3) from oil cooler (1) and seal with suitable stop plugs.   AR27.10-P-0501-03LF 
    SPECIAL TOOL Record plug Fig 3
4 Clamp off coolant hoses (2). SPECIAL TOOL Clamp Fig 4
5 Remove coolant hoses (2) from oil cooler (1) and seal openings with protective covers.   AR20.20-P-7441-01RQ
    SPECIAL TOOL Set of protective caps Fig 2
6 Push retaining clamp (4) upwards and remove oil cooler (1). NOTES Push the retaining clip (4) up carefully.
Otherwise, the retaining clamp (4) will be damaged.
If the retaining clamp (4) is damaged,

fasten oil cooler (1) at position marked by arrow using repair bolt and washer.
 
7 Install in the reverse order.    
INSPECT Check     
8 Check and correct oil level in automatic transmission.   AR27.00-P-0270EWN 
9 Connect diagnostic unit device perform bleeding routine.    
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-06ME
10 Check engine cooling system for leak tightness. Transmission 725.0 in model 167 with engine 176 AR20.00-P-1011MNO
    Transmission 725.0 in model 167 with engine 256.9 AR20.00-P-1010MSC
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
11 Carry out engine test run and check engine for proper leak tightness and leak tightness.    
12 Install upper engine cover. Transmission 725.0 in model 167 with engine 256.9 AR01.10-P-2405MSC
REFER TO MAINTENANCE   Transmission 725.0 in model 167 with engine 176 AP01.10-P-2405-01M
Fig 2: Identifying Set Of Protective Caps (001 589 00 91 00)
G12079434Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Record Plug (129 589 00 91 00)
G11971934Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Clamp (000 589 40 37 00)
G11065548Courtesy of MERCEDES-BENZ USA