Remove/install transmission cooling module - AR27.55-P-1500NKB

TRANSMISSION 724.0 in MODEL 117 

TRANSMISSION 724.0 in MODEL 156 

TRANSMISSION 724.0 in MODEL 176 

TRANSMISSION 724.0 in MODEL 242 

TRANSMISSION 724.0 in MODEL 246 

Fig 1: Transmission Cooling Module Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Notes on automatic transmission		AH27.19-P-0001-01NKB
	Remove/install
1	Unclip ME-SFI control unit or CDI control unit and place to one side with lines still attached	ENGINE 651 in MODEL 117, 156, 176, 246 with TRANSMISSION 724.0	AR07.08-P-7008OLB
		ENGINE 607 in MODEL 176, 246 with TRANSMISSION 724.0	AR07.08-P-7008ORA
		ENGINE 133 in MODEL 117, 156, 176 with TRANSMISSION 724.0 ENGINE 270 in MODEL 117, 156, 176, 242, 246.2 with TRANSMISSION 724.0	AR07.08-P-7008MT
2	Remove engine air intake duct and air filter housing	ENGINE 133 in MODEL 117, 156, 176 with TRANSMISSION 724.0	AR09.10-P-1150MTA
		ENGINE 270 in MODEL 117, 156, 176, 242, 246.2 with TRANSMISSION 724.0	AR09.10-P-1150MT
		ENGINE 607 in MODEL 176, 246 with TRANSMISSION 724.0	AR09.10-P-1150ORA
		ENGINE 651 in MODEL 117, 156, 176, 246 with TRANSMISSION 724.0	AR09.10-P-1150OLB
3	Drain coolant at radiator	TRANSMISSION 724.0 in MODEL 117, 156, 176 with ENGINE 133	AR20.00-P-1142MTA
		ENGINE 270 in MODEL 117, 156, 176, 242, 246 with TRANSMISSION 724.0 ENGINE 607 in MODEL 176, 246 with TRANSMISSION 724.0 ENGINE 651 in MODEL 117, 156, 176, 246 with TRANSMISSION 724.0	AR20.00-P-1142NKB
4	Detach coolant hoses from transmission cooling module (2)	Check condition of coolant hoses and clamps of coolant hoses; replace if necessary.
5	Unscrew bolts (1) and remove transmission cooling module (2) from transmission (27)	Replace the seal of the transmission cooling module (2).
		Bolt, cooler module to transmission housing	*BA27.10-P-1002-04F
6	Install in the reverse order
	Check
7	Check and correct oil level in transmission (27)		AR27.00-P-0100NKB
8	Check cooling system for leaktightness	TRANSMISSION 724.0 in MODEL 117, 156, 176 with ENGINE 133	AR20.00-P-1010MTA
		ENGINE 270 in MODEL 117, 156, 176, 242, 246 with TRANSMISSION 724.0 ENGINE 607 in MODEL 176, 246 with TRANSMISSION 724.0 ENGINE 651 in MODEL 117, 156, 176, 246 with TRANSMISSION 724.0	AR20.00-P-1010NKB
	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
9	Perform engine test run and check transmission (27) for function and leaks