Remove/install intelligent servo module - AR27.19-P-0550SZ

TRANSMISSION 722.6 in MODEL 221.1, 216.3 

Fig 1: Identifying Intelligent Servo Module Remove/Install Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Intelligent Servo Module Remove/Install Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

MODIFICATION NOTES

29.6.10

Value modified: Self-locking nut of flex disk to transmission or front propeller shaft, M12

*BA41.10-P-1001-01H

	Remove/install
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
1	Release parking brake
2	Disconnect ground lines from batteries	Insulate terminals of ground lines to prevent accidental contact with the ground points of the batteries.	AR54.10-P-0003SX
	Notes on battery		AH54.10-P-0001-01A
3	Remove bottom engine compartment paneling	Vehicles without top protection	AR61.20-P-1105SX
		Vehicles with code (Z07) Top protection	AR61.20-P-1105SXS
4	Remove catalytic converters (9) See: Remove components of exhaust system.		AR49.10-P-7100SX
5	Support transmission (1)	Secure the transmission (1) with a tensioning strap to prevent it from tilting or slipping off.
6	Remove rear engine crossmember (2) and rear engine mount		AR22.10-P-1180SX
7	Mark position of front flexible coupling (20V) relative to output flange of transmission (1) and to propeller shaft (20)	This is to ensure reinstallation at the ex-factory installation position, otherwise drive line vibrations can be produced.
8	Detach flexible coupling (20V) from output flange of transmission (1) and from the propeller shaft (20) and remove	If the fitted sleeves are jammed: ↓	AR41.10-P-0050-02SX
		Loosen fitting sleeves of flexible coupling (20V).	AR41.10-P-0050-09SX
	Drift for loosening fitting sleeves in flex disks.		WF58.50-P-4110-01A
		Attach the propeller shaft (20).	AR41.10-P-0050-07SX
			*BA41.10-P-1001-01H
9	Detach front exhaust bracket (6) from transmission (1)		*BA49.10-P-1008-01Z
10	Disconnect electrical connector from intelligent servo module (A80)
11	Lower transmission (1) slightly	When the engine is being lowered, it must not rest against the bulkhead, otherwise the coolant hoses and engine wiring harness will be damaged.
12	Remove the bolts (10) on the intelligent servo module (A80)	Replace bolts (10).
13	Remove intelligent servo module (A80) with bleed hose	When reusing  the intelligent servo module (A80) do not  detach bleed hose. Leaky separation points result in water entry.
14	Twist the range selector shaft (3) of the transmission counterclockwise  up to the end stop on position "D"  (arrow)	When replacing the intelligent servo module (A80). the new  intelligent servo module (A80) is on position "D"  (arrow). (condition as supplied) When replacing  intelligent servo module (A80) replace bleed hose. The positions of the range selection shaft (3) and intelligent servo module (A80) must match up, rotate range selection shaft (3) if necessary
			Fig 3
15	Install in the reverse order
16	Connect STAR DIAGNOSIS, read out fault memory and erase if necessary
17	Using STAR DIAGNOSIS, perform initial startup of intelligent servo module (A80)	After replacing  intelligent servo module (A80)

PROPELLER SHAFT

Number	Designation			Model 216	Model 221
BA41.10-P-1001-01H	Self-locking nut of flex disk to transmission or front propeller shaft	M12	Nm	68	68

EXHAUST SYSTEM

Number	Designation		Engine 275 in model 216	Engine 275 in model 221
BA49.10-P-1008-01Z	Bolt, catalytic converter bracket to transmission	Nm	20	20

Fig 3: Identifying Assembly Tool (722 589 03 09 00)

Courtesy of MERCEDES-BENZ USA