Specifications & Procedures BMW Z4 E85/E86

IDENTIFICATION

CHASSIS & ENGINE IDENTIFICATION

BMW KINEMATIC DIAGNOSIS SYSTEM

Manufacturer recommends the BMW Kinematic Diagnosis System (KDS) hardware for wheel alignment, which is an integrated part of automotive system concepts. It ensures that work is carried out in a particularly rational manner which is appropriate for BMW requirements. (Scheme 1) System includes the following

1. Kinematic Diagnosis System 1.
2. Computer.
3. Graphical Tablet.
4. Equipment Tablet.
5. Remote Display.
6. Measuring Sensors With CCD Camera.
7. Quick-Acting Clamp.
8. Rotating/Sliding Plates.
9. Sensor Pins.
10. Spoiler Adapter.
11. Quick-Clamping Units.
12. Retainers.

Scheme 1

RIDING HEIGHT ADJUSTMENT

Note. On vehicles with electronic chassis controls, all systems should be functional before attempting riding height or wheel alignment adjustment.

Before adjusting alignment, check riding height. Riding height must be checked with vehicle on level floor and tires properly inflated. Load front seats with 150 Lbs. (68 kg) each. Load 31 Lbs. (14 kg) in center of trunk and fill fuel tank.

Measure actual ride-level height from wheel housing lower edge to rim flange at height of wheel center. Determine average value of each wheel after lifting and lowering vehicle body and then average value of axle from these values. Ride height measurement must be within .04" (10 mm) of each side. For specifications, see RIDE HEIGHT SPECIFICATIONS .

RIDE HEIGHT SPECIFICATIONS

Note. For ride height specifications, see RIDE HEIGHT SPECIFICATIONS (FRONT) or RIDE HEIGHT SPECIFICATIONS (REAR) table.

RIDE HEIGHT SPECIFICATIONS (FRONT)

RIDE HEIGHT SPECIFICATIONS (REAR)

FRAME & UNDERBODY

Note. (Scheme 2) is not intended to represent the exact structure of each vehicle's frame, underbody or body outline. It is presented only to provide reference points.

The following illustration indicate areas (parts) of the underbody and frame which may be used to raise and support the vehicle, using either floor jack or hoist. These points are indicated by shaded areas on the frame. (Scheme 2)

Scheme 2

OUTERBODY

Those points designated on the outline of the body were specifically designed to facilitate the use of the vehicle's own jack. These jacking points are indicated by circular dots on the outline of the body. (Scheme 2) If using floor jack or hoist, exercise extreme care to avoid damaging outer body shell.

WHEEL ALIGNMENT PROCEDURES

Note. Prior to performing wheel alignment, perform preliminary visual and mechanical inspection of wheels, tires, riding height and suspension components.

Front

Note. A camber change always involves a toe-in change. Therefore, camber must be adjusted first.

Scheme 3

Scheme 4

Scheme 5

1. Remove centering pin (1). This pin is no longer needed. Remove dirt in area of support bearing in wheel arch from below with compressed air. Slacken nuts (2) approximately 1 1/2 turns. Remove nut (3). (Scheme 3)
2. Insert special tool (32 3 144/145) into opening of wheel arch and over stay bolt/nut (3). Adjust camber by turning nut. See «WHEEL ALIGNMENT SPECIFICATIONS»(/bmw/z4/e85e86-2002-2005/remont/wheel-alignment/#specifications-procedures__wheel-alignment-specifications). Replace nuts (2) and tighten. (Scheme 4) See «TORQUE SPECIFICATIONS»(/bmw/z4/e85e86-2002-2005/remont/wheel-alignment/#specifications-procedures__torque-specifications).
3. Remove special tool. Replace nut (3) and tighten down. (Scheme 5) Tighten to specification. See «TORQUE SPECIFICATIONS»(/bmw/z4/e85e86-2002-2005/remont/wheel-alignment/#specifications-procedures__torque-specifications).
4. Adjust toe-in. See «TOE-IN ADJUSTMENT»(/bmw/z4/e85e86-2002-2005/remont/wheel-alignment/#specifications-procedures).

Rear

1. Replace hexagon collar nut (1). Ensure eccentric washer is correctly located (2). (Scheme 6) Tighten hexagon collar nut (1) to specification. See «TORQUE SPECIFICATIONS»(/bmw/z4/e85e86-2002-2005/remont/wheel-alignment/#specifications-procedures__torque-specifications).
2. Loosen hexagon collar nut (1) by 1/2 turn. CAUTION: If the nut (1) is tightened down more than 10 times during adjustment, it must be replaced again. The self-locking effect becomes too slight.
3. Adjust camber with eccentric screw. Adjust to specification. See «WHEEL ALIGNMENT SPECIFICATIONS»(/bmw/z4/e85e86-2002-2005/remont/wheel-alignment/#specifications-procedures__wheel-alignment-specifications).
4. Ensure eccentric washer is correctly located between the stops (1). (Scheme 7) Tighten hexagon collar nut to specification. See «TORQUE SPECIFICATIONS»(/bmw/z4/e85e86-2002-2005/remont/wheel-alignment/#specifications-procedures__torque-specifications).
5. Adjust toe-in. See «TOE-IN ADJUSTMENT»(/bmw/z4/e85e86-2002-2005/remont/wheel-alignment/#specifications-procedures).

Scheme 6

Scheme 7

CASTER ADJUSTMENT

Note. Information is not available as caster is possibly not adjustable.

Note. The camber must be adjusted first. See CAMBER ADJUSTMENT .

Scheme 8

Scheme 9

1. Move steering gear and wheels to straight ahead position. Markings on cap (1) and on housing (2) must match up on steering gear. (Scheme 8)
2. Loosen clamping nut (1) on tie rod. Adjust wheel toe-in by turning tie rod axial joint at hexagon head (2). (Scheme 9) Adjust to specification. See «WHEEL ALIGNMENT SPECIFICATIONS»(/bmw/z4/e85e86-2002-2005/remont/wheel-alignment/#specifications-procedures__wheel-alignment-specifications).
3. Make sure steering sleeve is not twisted. Grip tie rod and tighten down lock nut (1) to specification. See «TORQUE SPECIFICATIONS»(/bmw/z4/e85e86-2002-2005/remont/wheel-alignment/#specifications-procedures__torque-specifications).

Note. A change of camber always involves a change of toe. Adjust camber first. See CAMBER ADJUSTMENT .

1. Loosen screws approximately 1 1/2 turns on bearing block. Attach Special Tool (32 3 030) to screw head and to journal (1). (Scheme 10) Turn special tool and adjust toe-in to specification. See «WHEEL ALIGNMENT SPECIFICATIONS»(/bmw/z4/e85e86-2002-2005/remont/wheel-alignment/#specifications-procedures__wheel-alignment-specifications).

Scheme 10

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

WHEEL ALIGNMENT SPECIFICATIONS

Car loaded down to normal position. Vehicle with complete equipment for normal operation with: 2 x 68 kg on front seats (seats in central position); 1 x 14 kg in luggage compartment (centre) and full fuel tank. For wheel alignment specifications (Scheme 11)and (Scheme 12).

Scheme 11

Scheme 12

Scheme 13

Scheme 14

Scheme 15

Scheme 16

Scheme 17

See also:
• RIDE HEIGHT SPECIFICATIONS
• RIDE HEIGHT SPECIFICATIONS (FRONT)
• WHEEL ALIGNMENT SPECIFICATIONS
• TORQUE SPECIFICATIONS