32 00 601 Adjusting toe-in on front axle

IMPORTANT: Changes in axle geometry caused by accidents must under no circumstances be rectified by camber adjustment!

NOTE: Camber and toe-in influence each other. Adjust the toe-in first in order to simplify the adjustment procedure.
The camber adjustment is performed only with the replacement of the swivel bearing. There are various swivel bearings (+/-30') for this purpose.
-> See also ADDITIONAL WORK FOR CAMBER CORRECTION and BMW Spare Parts Catalog!

Firstly align steering by means of markings on cap (1) and steering gear (2).

Then bring steering wheel into straight-ahead position and secure with steering wheel arrester.

Fig 1: Locating Cap And Steering Gear Markings

Courtesy of BMW OF NORTH AMERICA, INC.

Adjust toe-in:

Clean thread on track rod.

Loosen screw (2).

Turn tie rod (3) to adjust toe-in to setpoint value, if necessary counterhold track rod end (1).

Tighten screw (2).

Tightening torque 32 21 2AZ .

If necessary, correct installation position of gaiter.

Fig 2: Identifying Tie Rod End And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

After Installation note:

Check directional stability of car; if necessary, repeat toe-in adjustment

32 00 150 Carry out Kinematics Diagnosis System wheel alignment with vehicle load up to design position

Overview of Activities

Preprocesses

Preliminary work before wheel alignment
Moving vehicle into normal position
Moving vehicle into design position
Keyprocesses
Carry out wheel alignment
Postprocesses
Removing the wheel alignment system

Additional Information

Overview Technical Data

Use in Activity: 2

DIN normal position loading
Vehicle filled up with full range of equipment for normal driving with:	On the front seats (seats in center position): 2x68 kg
	On the rear seat (center) 1x68 kg
	In the luggage compartment (center) 1x21 kg

Use in Activity: 3

Tolerance for ride height at design level
	Tolerance for setpoint value
	max. 2 mm
	Difference between left and right
	max. 2 mm

Prerequisite

Only BMW approved wheel and tire combinations are installed on the vehicle.
Correct tread depth. The tread depth for each axle may differ from left to right by max. 1-2 mm.
Correct tire pressure (see label on vehicle).
All chassis and suspension components must be technically OK.
Condition of suspension and shock absorbers OK: Visually inspect for breakage, etc.
In vehicles with air suspension, pull fuse of air supply system so that there is no controlling down or up.

safety instructions

NOTE: Carry out wheel alignment with DIN vehicle load only:

If the technical prerequisites for measurement with ride height input are not fulfilled.
If the vehicle in question is a damaged vehicle.

Preprocesses

Preliminary work before wheel alignment
- On vehicles with rear axle slip angle control: Run the "Move HSR actuator to center position" service function.
- Drive the motor vehicle onto the axle alignment test stand so the front wheels and rear wheels are positioned in the center of the rotating/sliding plates.
  
  Fig 3: Identifying Rotary And Sliding Plates
  Courtesy of BMW OF NORTH AMERICA, INC.
  
  TECHNICAL INFORMATION
  
  Please observe the regulations of the various equipment manufacturers. Use only quick connectors with poly control pins (1). Due to excessive measuring inaccuracy, other quick-clamping units are not permitted!
- Position pickups/ride height markers on the vehicle.
  
  Fig 4: Identifying Poly Control Pins
  Courtesy of BMW OF NORTH AMERICA, INC.
- Enter customer and vehicle data.
- Identify chassis version and select vehicle.
- Enter tire pressure and tread depth.
- Remove locking pins from both rotating and sliding plates.
- Install brake tensioner.
  
  Fig 5: Locating Brake Tensioner
  Courtesy of BMW OF NORTH AMERICA, INC.

Moving vehicle into normal position

In vehicles with air suspension systems: run ride height adjustment with BMW diagnosis system.
Check vehicle interior and luggage compartment (including spare wheel well) for load status, if applicable, unload motor vehicle

Install the DIN vehicle load

TECHNICAL DATA SPECIFICATION

DIN normal position loading
Vehicle filled up with full range of equipment for normal driving with:	On the front seats (seats in center position): 2x68 kg
	On the rear seat (center) 1x68 kg
	In the luggage compartment (center) 1x21 kg

Moving vehicle into design position

Add/distribute weights around the spring struts until the vehicle ride height is within the tolerance (refer to Technical Data ).

TECHNICAL DATA SPECIFICATION

Tolerance for ride height at design level
	Tolerance for setpoint value
	max. 2 mm
	Difference between left and right
	max. 2 mm

Measuring the vehicle ride height (A): (1) Attach the tape measure to the bottom rim flange (2) and measure the distance to the lower wheel arch edge.

Fig 6: Identifying Vehicle Ride Height
Courtesy of BMW OF NORTH AMERICA, INC.

Keyprocesses

Carry out wheel alignment
- Perform input alignment in accordance with equipment manufacturer's instructions.
- If necessary, adjust front axle and rear axle.
- Perform output alignment in accordance with equipment manufacturer's instructions.
- Save and print out test record.
Postprocesses
Removing the wheel alignment system
- Insert locking pins into both rotary and sliding plates.
- Remove pickups/ride height markers.
- Remove weights from the motor vehicle.