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Instructions
Chassis / Suspension - Wheels and Tyres Front / Wheels and Tyres - Service Procedures / DC-RM-04B004-00-001 - 765 LT Spider - Check suspension geometry
Prepare the vehicle
1.  
Check the tyre pressures when they are at ambient temperature. The correct tyre pressures are shown in the table below.
Front
Rear
2.0 bar
2.0 bar
 
2.  
Start the engine.
 
3.  
Set the handling mode to Normal for a minimum of 30 seconds.
 
4.  
Set the handling mode to Track for a minimum of 30 seconds.
 
5.  
Set the handling mode to Normal for a minimum of 30 seconds.
 
6.  
Stop the engine.
 
 
Care Point:
The fuel tank must be half full. This weighs approximately 26.5kg. If the fuel tank is not half full, you must adjust the quantity of ballast that you add.

Care Point:
Before you add ballast, drive the vehicle in the workshop. Make sure that the suspension has become stable.

 
7.  
Put the vehicle on the wheel alignment ramp.
 
8.  
Add ballast to the areas shown in the table below:
Driver seat
Driver side floor
Passenger seat
Passenger side floor
25kg
12.5kg
25kg
12.5kg
 

Measure the ride heights
1.  
The illustration shows the correct method (1) for measuring the ride heights.
 

2.  
The front ride height measurement points are shown (2).
 

3.  
The rear ride height measurement points are shown (3).
 
4.  
Measure and record the ride heights. The correct values are shown in the table below.
Front
Rear
109mm ± 3mm
126mm ± 3mm
 


Wheel alignment check
 
Care Point:
The caster angle is not adjustable.

 
1.  
Do the wheel alignment check.
 
2.  
The correct toe and camber values are shown in the tables below.
Front

Total toe

Toe
- 0°4’ OUT (-0.60mm)
- 0°8’ OUT (-1.2mm)
Tolerance ± 1’ (+/- 0.15mm)
Camber
- 1.7° (-1°42’)
 
Tolerance ± 6’ (1 position of camber adjustment = 12’)
Rear

Total toe

Toe
+ 0°8’ IN (+1.2mm)
+ 0°16’ IN (+2.4mm).
Tolerance ± 1’ (+/- 0.15mm)
Camber
- 1.25° (-1°15’)
 
Tolerance ± 6’ (1 position of camber adjustment = 12’)
 
3.  
Connect the McLaren Diagnostic System (MDS).
 
4.  
Go to Sequences in the Steering Angle Sensor (SAS).
 
5.  
Do the Fine Tune Zero Position sequence.
 
6.  
Do a Diagnostic Trouble Code (DTC) read and clear.
 

   
   
   Note