Remove/Install Automatic Transmission Fluid Cooler - AR27.55-P-1000LF

Transmission 722.9 in model 217 with engine 157 

Transmission 722.9 in model 217 with engine 276.8 

Transmission 722.9 in model 217 with engine 278 

Transmission 722.9 in model 217 with engine 279 

Transmission 722.9 in model 222 with engine 157 

Transmission 722.9 in model 222 with engine 276.8 

Transmission 722.9 in model 222 with engine 277, 279 

Transmission 722.9 in model 222 with engine 278 

Transmission 722.9 in model 222 with engine 642 

Transmission 724.2 in model 222 with engine 276 

Transmission 725.0 in model 217, 222 with engine 278 

Transmission 725.0 in model 222 with engine 276 

Shown on engine 278 

Courtesy of MERCEDES-BENZ USA

Shown: radiator package on engine 278 

Shown: right front engine compartment on engine 278 

Courtesy of MERCEDES-BENZ USA

	Risk of injury.  Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	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 overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
	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
	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
	Notes on automatic transmission		AH27.19-P-0001-01NKB
	Remove/install
1	Remove left or right engine air intake duct (3a or 3b)
2	Drain coolant	Install front and lower center engine compartment lining only after leak test.	AR20.00-P-1142LF
3	Detach oil lines (9, 10) from oil cooler (1)		AR27.10-P-0501-03LF
		Record plug	Fig 3
4	Seal openings in oil cooler (1) using suitable stop plugs	Record plug	Fig 3
5	Remove coolant hoses (11, 12) from oil cooler (1)		AR20.20-P-7441-01RQ
6	Close off connections of coolant hoses at oil cooler (1) with protective covers	Set of protective covers	Fig 2
7	Seal coolant hoses (11, 12) using protective covers	Set of protective covers	Fig 2
8	Push retaining clip (8) in upward direction and remove oil cooler (1)	Carefully push the retaining clip (8) upwards. Otherwise the retaining clip (8) will be damaged. If retaining clip (8) is damaged ↓ secure oil cooler (1) at position marked by arrow using repair bolt (6) and washer (7).
9	Install in the reverse order
10	Pour in coolant and bleed cooling system		AR20.00-P-1142LF
	Check
11	Check fluid level in automatic transmission and adjust to correct level	Transmission 725.017 in model 222 with engine 276	AR27.00-P-0270EWH
		Transmission 725.0 (except 725.017) in mode 222 with engine 276 Transmission 725.0 in model 217, 222 with engine 278	AR27.00-P-0270EWN
		Transmission 722.96 in model 217, 222 with engine 276.8 Transmission 722.96 in model 217, 222 with engine 278	AR27.00-P-0270SYZ
		Transmission 722.9 (except 722.96) in model 217, 222 with engine 276.8 Transmission 722.9 (except 722.96) in model 217, 222 with engine 278 Transmission 722.9 (except 722.96) in model 222 with engine 642 Transmission 722.9 (except 722.97) in model 217, 222 with engine 157 Transmission 722.9 in model 217 with engine 279 Transmission 722.9 in model 222 with engine 277, 279	AR27.00-P-0270W
		Transmission 724.2 in model 222 with engine 276.9	AR27.00-P-0270EH
	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
12	Perform engine test run and check oil lines (9, 10) and oil cooler (1) for leak tightness
13	Install front and center engine compartment paneling		AR61.20-P-1105LF