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Home >> BMW >> 2018 >> M4 2D Convertible, Automatic DCT Trans >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Rear Axle - Repair -- M4 (F82 & F83) >> 33 32 Trailing Arms And Struts >> Replace upper front wishbone

Replace upper front wishbone

Special tools required: 

Necessary preliminary tasks: 

Removal: 

Slacken nut (4).

Slacken nut (2).

Remove screw (3).

Remove wishbone (1).

G13692197Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

NOTE: The wishbone screw connection on the rear axle support must be tightened in the normal position. For this purpose, the coil spring must be tensioned.

Position wishbone (1).

Part  : Replace screw (3) and nut (2).

Insert bolt (3).

Screw on the nut (2).

Part  : Replace nut (4).

Tighten nut (4).

Tightening torque 33 32 6AZ .

G13692197Courtesy of BMW OF NORTH AMERICA, INC.

Insert lower spring cup 2 412 505 centrally into coil spring and turn to lowest winding.

Guide spindle 33 5 013, 33 5 014, 33 5 015 from below through the camber link and the lower spring cup 2 412 505.

G13692186Courtesy of BMW OF NORTH AMERICA, INC.

Insert top spring cup 2 412 506 sideways into coil spring and turn to the uppermost winding.

Attention! 

Make sure spindle (hexagonal) is correctly seated in upper spring cup 2 412 506!

Pull spindle 33 5 013 down.

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WARNING: Danger of injury!
Make sure coil spring is correctly positioned in spring cups.
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Attention! 

Center special tools 2 412 505, 2 412 506, 33 5 013, 33 5 014, 33 5 015 to achieve the greatest possible contact surface with the coil spring.

Check installation position of special tools  2 412 505, 2 412 506, and 33 5 013, 33 5 014, 33 5 015 , correct if necessary.

G13692163Courtesy of BMW OF NORTH AMERICA, INC.

Tighten coil spring using special tools 33 5 016 and 33 5 020, gripping the spindle of the spring tensioner with special tool 33 5 017.

Tension the coil spring so that the normal position can be set by lifting the wheel carrier.

G13692166Courtesy of BMW OF NORTH AMERICA, INC.

Secure special tool 2 358 630 with wheel studs to drive flange.

Insert the workshop jack into the special tool 2 358 630.

G11145423Courtesy of BMW OF NORTH AMERICA, INC.

Adjusting normal position: 

NOTE: To raise the wheel carrier, the spring absolutely must be tensioned. Do not move the wheel carrier to normal position against the spring force. 
Push wheel carrier up to dimension A with workshop jack and special tool 2 358 630.
Dimension A = middle of wheel hub to upper edge of wheel arch
Dimension A - F80 = 343 mm Dimension A - F82, F83 = 363 mm
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Tighten nut (2).

Tightening torque 33 32 5AZ .

NOTE: If required, use torque wrench with ring wrench adjustment.
G13692197Courtesy of BMW OF NORTH AMERICA, INC.

Lower the universal jack and put it away.

Remove special tool 2 358 630.

G11145423Courtesy of BMW OF NORTH AMERICA, INC.

Check fitting of coil springs in spring pads (top and bottom), if necessary again align and relieve tension.

Remove special tools 2 412 505, 2 412 506, 33 5 013, 33 5 014, and 33 5 015.

G13692163Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: