Instructions
Chassis / Steering / Steering Pump / DA-RM-04D001-02-001 - Remove/Install pump - Electric Hydraulic Power Assisted Steering (EHPAS)
Preparation work
1.     
2.     
3.     
Care Point: Remove both sides.
4.     
5.     
6.     
7.     
Care Point: If vehicle is left hand drive, do not remove the washer bottle.
8.     

WARNING!
 
Risk of injury and poisoning working with hydraulic fluid!
Risk of injury to skin or eyes from hydraulic fluid spraying out under pressure. When disengaging hydraulic lines without depressurising the system, dangerous skin or eye injuries can occur due to the very high pressures (in excess of 200 bar). If hydraulic fluid, particularly central hydraulic fluid (especially harmful), comes into contact with unprotected skin, this can cause damage to the skin.
If hydraulic fluid is swallowed, this can lead to poisoning symptoms such as headache, dizziness, nausea, vomiting, diarrhoea, cramps and unconsciousness.
Wear protective gloves, protective clothing and eye protection.
Depressurise and drain the system if necessary when commencing work on hydraulic systems.
Never put hydraulic fluid into beverage containers.
Ensure sufficient ventilation, especially in the case of central hydraulic fluid.
Ensure that only authorised persons have access to hydraulic fluid.
Immediately seal disconnected leads and hoses and the connections to the assembly with blind plugs.
 

WARNING!
 
Risk of injury and poisoning working with hydraulic fluid!
Risk of injury to skin or eyes from hydraulic fluid spraying out under pressure. When disengaging hydraulic lines without depressurising the system, dangerous skin or eye injuries can occur due to the very high pressures (in excess of 200 bar). If hydraulic fluid, particularly central hydraulic fluid (especially harmful), comes into contact with unprotected skin, this can cause damage to the skin.
If hydraulic fluid is swallowed, this can lead to poisoning symptoms such as headache, dizziness, nausea, vomiting, diarrhoea, cramps and unconsciousness.
Wear protective gloves, protective clothing and eye protection.
Depressurise and drain the system if necessary when commencing work on hydraulic systems.
Never put hydraulic fluid into beverage containers.
Ensure sufficient ventilation, especially in the case of central hydraulic fluid.
Ensure that only authorised persons have access to hydraulic fluid.
Immediately seal disconnected leads and hoses and the connections to the assembly with blind plugs.
 

WARNING!
 
Risk of injury and poisoning working with hydraulic fluid under pressure!
Risk of injury to skin or eyes from hydraulic fluid spraying out under pressure. If any part of the hydraulic circuit has failed, a possibility of the system not depressurising can occur. Extra precaution is required in this event. If hydraulic fluid is swallowed, this can lead to poisoning symptoms such as headache, dizziness, nausea, vomiting, diarrhoea, cramps and unconsciousness.
Always wear skin protection cream, protective gloves and safety glasses when working on a potentially pressurised system.
 

WARNING!
 
Possible fluid spills from vehicle systems during repairs or maintenance.
Risk of thermal incidents, slip hazards, corrosion of electrical components, failure of electrical or mechanical components or unwanted odours.
Always limit fluid spills and fully clean the spilled fluid after repairs or maintenance.
 

Remove pump - EHPAS
1.   
Detach harness clips (1).
 

2.   
Disconnect electrical connectors (2).
 
3.   
Remove bolts (3).(M6x16) 8 Nm
 
4.   
Lay aside TPMS ECU/Antenna and bracket assembly (4).
 

5.   
Remove bolt (5) and detach pipe (6).(M8x20) 25 Nm
 
6.   
Remove clip (7) and detach hose (8).
 

7.   
Remove nuts (9).(M6) 9 Nm
 
 
Care Point:
Pump is secured to the rear with a ball stud.

 
8.   
Remove pump (10) from vehicle.
 

 
Care Point:
Proceed if replacing pump only.

 
9.   
Remove bolts (11).(M6x10) 9 Nm
 
10.  
Separate pump (10) from bracket (12).
 
11.  
Remove NVH cover (13).
 


Install pump - EHPAS
1.   
Clean pump before re-installing NVH cover.
 
 
Care Point:
Inspect AV mounts. Replace if damaged/worn.

 
2.   
Install EHPAS pump in reverse order.
 
3.    
 
Care Point:
Carry out steps 4 to 8 if a new pump is fitted.

 
4.   
Connect McLaren Diagnostic System (MDS).
 
5.   
Proceed to Diagnostic Toolbox.
 
6.   
Select Electro Hydraulic Power Steering (EHPS).
 
7.   
Access Reprogramming.
 
 
Care Point:
If update is not available, proceed to step 9.

 
8.   
Check if a software update is available, update as required.
 
 
Care Point:
The procedure below must be claimed separately if you make a warranty claim.

 
9.   
Carry out steering system fill/bleed procedure.DA-RM-04D001-00-001 - Fill/Bleed fluid - Steering
 
10.  
Install remaining components in reverse order.
 
11.  
Read out and clear error memory.
 

   
   
   Note