Remove/install electrohydraulic controller unit (transmission installed)

AR27.19-P-0200EH

22.11.2019

Transmission

724.2

P27.19-2641-09

Shown on transmission 724.2 in model 212.054

1	Transmission housing	5	Pipe	8b	Seal
2	Electrical connection	6	Bolts	M42	Electric oil pump
3	Oil pan	7	Oil guide pipe	Y3/8	Fully integrated transmission control control unit
4	Oil filter	8a	Seal

 Danger	Risk of death caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
 Danger	Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)	Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.	AS00.00-Z-0035-01A
Topical note	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
Topical note	General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system		AH00.00-Z-0300-01A
Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
Topical note	Notes on battery		AH54.10-P-0001-01A
	Notes on automatic transmission		AH27.19-P-0001-01NKB
 	Remove/install
1.1	Remove lower engine compartment paneling and its bracket below transmission	Transmission 724.2 in model 166 with engine 276 Transmission 724.2 in model 205 with engine 274 Transmission 724.2 in model 205 with engine 651 Transmission 724.2 in model 212 with engine 276 Transmission 724.2 in model 222 with engine 276 Transmission 724.2 in model 222 with engine 651 Transmission 724.2 in model 253 with engine 274
		Transmission 724.2 in model 166 with engine 276	AR61.30-P-1001GQ
		Transmission 724.2 in model 205 with engine 274 Transmission 724.2 in model 205 with engine 651 Transmission 724.2 in model 253 with engine 274	AR61.20-P-1105LW
		Transmission 724.2 in model 212 with engine 276	AR61.20-P-1105EW
		Model 222 with engine 276 with transmission 724.2 Model 222 with engine 651 with transmission 724.2	AR61.20-P-1105LF
1.2	Remove bottom section of soundproofing	Transmission 724.2 in model 212 with engine 651
		Transmission 724.2 in model 212 with engine 651	AR94.30-P-5300EW
2	Remove heat shield from transmission	Transmission 724.2 in model 205, 222, 253	AR27.40-P-0700-01LF
		Transmission 724.2 in model 212	AR27.40-P-0700-01EW
		 Transmission 724.2 in model 212Bolt, heat shield to sprag	*BA27.10-P-1013-04G
	Clean
3	Clean oil pan (3) and surrounding area
4	Remove oil pan (3)		AR27.10-P-7030EH
5	Remove oil filter (4)	 Installation: Replace oil filter (4) and pipe (5).
		 Screw/bolt, oil filter to electrohydraulic controller unit	*BA27.10-P-1015-04G
6	Remove electric oil pump (M42)		AR27.30-P-0651EH
7	Connect transmission connector to electrical connection (2)	 Installation: Clean transmission connector and electrical connection (2).
8	Unscrew screws/bolts (6) and remove fully integrated transmission control controller unit (Y3/8) from transmission housing (1)	 When prying off a tightly fixed fully integrated transmission control controller unit (Y3/8), cover the sealing surfaces on transmission housing (1). The sealing surfaces on the transmission housing can be damaged otherwise.
		 Installation: Replace screws/bolts (6) and oil guide pipe (7). Check that the seals (8a, 8b) are in good condition and seated correctly; replace if necessary. Insert oil guide pipe (7) into the transmission housing (1)before installing the fully integrated transmission control controller unit (Y3/8).
		 Bolt, electrohydraulic controller unit to transmission housing	*BA27.19-P-1001-01C
		Where fully integrated transmission control controller unit (Y3/8) is jammed
		
		Carefully pry off the fully integrated transmission control controller unit (Y3/8) using a suitable tool
9	Install in the reverse order	 Shift through the gears of the transmission a few times before putting into service in order to flush any air pockets out of the fully integrated transmission control controller unit (Y3/8).
10	Connect diagnostic system, read out fault memory and clear
		Model 205, 222, 253 with transmission 724.2	AD00.00-P-2000-04B
		Model 166, 212 with transmission 724.2	AD00.00-P-2000-04A
11	Perform transmission adaptation	After replacing or repairing the transmission.
 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
12	Test run engine and check transmission for leak tightness and proper operation

 Automatic transmission complete

Number	Designation		Transmission 724.2
BA27.10-P-1013-04G	Bolt, heat shield to sprag	Nm	9

 Automatic transmission complete

Number	Designation		Transmission 724.2
BA27.10-P-1015-04G	Screw/bolt, oil filter to electrohydraulic controller unit	Nm	9

 Electrohydraulic controller unit

Number	Designation			Transmission 724.2
BA27.19-P-1001-01C	Bolt, electrohydraulic controller unit to transmission housing	Stage 1	Nm	4
		Stage 2	°	90

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