Remove/install electrohydraulic controller unit (transmission installed) - AR27.19-P-0200A: Notes

TRANSMISSION 722.6 in MODEL 129, 140, 163, 170, 202, 208, 210, 211, 215, 220, 230 (except, 220.874/876) 

TRANSMISSION 722.6 in MODEL 461, 463 (except 461.331, 463.270 /271) 

Fig 1: Identifying Electrohydraulic Controller Unit Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Before starting work, the area around the transmission separation points must be thoroughly cleaned. Even the smallest dirt particles, introduced into the hydraulic components, can lead to malfunctions and a total failure of the transmission
1	Switch ignition off, remove ignition key (transmitter key).	Vehicles with Keyless Go code 889: Press the Keyless-Go start and stop button repeatedly until the ignition is switched off. Remove the Keyless Go transmitter card or transmitter key from the vehicle and store beyond the reach of the transmitter (min. 2 m).
2.1	Raise vehicle with lifting platform	Models 461, 463	AR00.60-P-1000G
2.2	Remove rear part section of engine compartment paneling	Model 140 with gasoline engine: Detach rear section of the lower engine compartment paneling on the vehicle underbody and remove downwards.
		Model 170	AR61.20-P-1105A
		Model 163.172/174/175	AR61.20-P-1105GH
		Model 211 with gasoline engine	AR61.20-P-1105T
		Model 215, 220 with gasoline engine	AR61.20-P-1105M
		Model 129, 202, 208, 210 with gasoline engine	AR61.20-P-1105AB
		Model 230 with gasoline engine	AR61.20-P-1105R
2.3	Remove rear part of bottom sections of soundproofing	Model 140, 163 with diesel engine: Detach rear section of noise bottom section of soundproofing on vehicle underbody and remove downwards.
		Model 202 with diesel engine	AR94.30-P-5300A
		Model 210 with diesel engine	AR94.30-P-5300AB
		Model 211 with diesel engine	AR94.30-P-5300T
		Model 220 with diesel engine	AR94.30-P-5300M
3	Detach front retaining bracket of rear engine compartment paneling	Model 230
4.1	Disconnect plug connector (26)	Model 163, 463
4.2	Detach heat shield (62) and unplug connector (26)	Except model 163, 463	AR27.10-P-0500-01A
			*BA27.40-P-1014-01A
5	Loosen pilot bushing (21), remove from transmission housing (2) and replace if necessary		AR27.19-P-0230A
			*BA27.19-P-1003-01A
	Pilot bushing modified		BT27.19-P-0004-01A
6	Drain transmission oil; to do this, unscrew oil drain screw (4)	Installation:  Replace sealing ring.
			*BA27.10-P-1001-03A
		If the transmission oil is burnt or contains particles, the oil cooling lines and oil cooler must be flushed:
		Except model 461, 463	AR27.55-P-0001A
		Models 461, 463	AR27.55-P-0001GA
7	Remove transmission oil pan (3)	Installation:  Install new gasket
			*BA27.10-P-1002-03A
8	Remove magnet (69) from transmission oil pan (3)	Vehicles as of approx. 04/2001
		Clean magnet (69).
	Magnet (69) in transmission oil pan (3), added for the first time	Passenger cars only	BT27.40-P-0003-01A
9	Remove oil filter (5)
10	Remove bolt (19a) and detach electric controller unit (Y3/6)	Pay attention to the positions of the punched windows in the pulse rings through the rpm sensor n3 hole (a) and the rpm sensor n2 hole(b).
		If plastic part of selector valve does not engage in driver of detent plate: ↓
		Insert selector valve in driver of detent plate.	AR27.19-P-0200-01A
		Disassemble/assemble electric controller unit (Y3/6).	AR27.19-P-0220A
			*BA27.19-P-1001-01A
11	Install in the reverse order
12	Add oil to transmission and check oil level		AR27.00-P-0101A
13	Read out fault memory with STAR DIAGNOSIS and erase if necessary
14	Perform transmission adaptation	After replacing or repairing transmission, perform transmission adaptation.
	Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
15	Perform engine test run and check transmission for leaks and that it is functioning correctly