Remove/install ETS/ASR/ESP hydraulic unit - AR42.40-P-0816GH

MODEL 163.113 /128 /136 /154 /157 /172 /174 /175 

Connections of traction systems hydraulic unit 

Fig 1: Identifying Connections Of Traction Systems Hydraulic Unit

	Remove/install
	Risk of poisoning  from swallowing brake fluid. Risk of injury  from skin and eye contact with brake fluid.	Pour brake fluid only into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.	AS42.50-Z-0001-01A
	Notes on brake fluid	All models	AH42.50-P-0001-01A
	Notes on repairs to brake system	All models	AH42.00-P-0003-01A
	Ignition OFF
1	Remove washer fluid reservoir
2	Unscrew hydraulic lines from traction systems hydraulic unit	Plug hydraulic lines and connections with blind plugs to prevent brake fluid running out. Label hydraulic line in relation to appropriate connection before unscrewing to prevent mixing up lines and hoses. Installation:  Pay attention to the markings when screwing on the hydraulic lines. Do not misconnect hydraulic lines. Trace line routing to the corresponding wheel if necessary.
			*BA42.40-P-1001-01A
		Set of plugs	Fig 4
		Box wrench bit	Figure
		Box wrench bit	Figure
3	Remove left fender liner		AR88.10-P-1300GH
4	Disconnect 15-pin connector from hydraulic unit	Release bayonet lock.
5	Remove the hydraulic unit.	Unscrew hydraulic unit from retaining plate and remove sideways through the wheelhouse after unclipping the transfer case vent line and unscrewing the retaining bolts for the hydraulic unit. Pull the retaining plate upwards out of the rubber mounts if necessary.
6	Install in the reverse order	Rinse off any escaped brake fluid with water.
7	Bleed brake system		AR42.10-P-0010GH
8	Fault memory	Read out and erase fault memory, see Diagnosis Manual, Chassis, Volume 3.

Acceleration Slip Regulation (ASR)

Fig 2: Identifying Box Wrench Bit (000 589 75 03 00)

Fig 3: Identifying Box Wrench Bit (140 589 00 03 00)

Fig 4: Identifying Set Of Plugs (129 589 00 91 00)