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86 10 ... Adjusting brake system

Proper adjustment of the brake system is only possible if the brake Bowden cables and all brake system moving parts move freely and are ready for operation.

The wheels must be completely fitted and able to rotate freely. Always adjust both brake sides. The left and right sides are adjusted in the same way.

Pull out overrunning equipment (1) fully in direction of arrow.

Fig 1: Pulling Out Overrunning Equipment
G03207574Courtesy of BMW OF NORTH AMERICA, INC.

Reversing lever (1) must rest directly on inner-lying tow tube of overrunning brake.

Fig 2: Identifying Reversing Lever
G03207575Courtesy of BMW OF NORTH AMERICA, INC.

Screw brake linkage (1) into nut (2) until distance (3) (nut (2) - end of brake linkage (1)), is 10 - 15mm. Lock brake linkage (1) in position with nut (4).

Fig 3: Screwing Brake Linkage Into Nut
G03207576Courtesy of BMW OF NORTH AMERICA, INC.

Check distance (3) and nuts (2, 4) with brake linkage installed.

Insert pull rod (1) in brake compensator (2) and screw nut (3) onto pull rod (2).

Fig 4: Inserting Pull Rod In Brake Compensator
G03207577Courtesy of BMW OF NORTH AMERICA, INC.

Tighten nut (3) until pull rod (1) is free of play.

Check pull rod (1) already fitted for zero play.

Hook tension spring (1) to tension spring mount (2).

Fig 5: Hooking Tension Spring To Tension Spring Mount
G03207578Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

The brake shoes are adjusted in two work steps. In the first step, the distance between the lower half of the brake shoes and the brake drum is adjusted. In the second step, the distance between the upper half of the brake shoes and the brake drum is adjusted.

Rotate road wheel (1) in direction of travel and simultaneously turn adjusting screw (2) in direction of arrow.

Fig 6: Turning Adjusting Screw
G03207579Courtesy of BMW OF NORTH AMERICA, INC.

Tighten adjusting screw (2) until road wheel (1) can no longer be turned.

Turn adjusting screw (1) in direction of arrow and release slowly until road wheel (2) can rotate.

Fig 7: Releasing Adjusting Screw
G03207580Courtesy of BMW OF NORTH AMERICA, INC.

Finish adjustment procedure when slight grinding noises can be heard in lower brake shoe halves.

Firmly tighten handbrake lever three to five times.

Depending on road wheel side, tighten nut (1) or (2) until slight grinding noises can be heard in upper brake shoe halves.

Fig 8: Tightening Nuts
G03207581Courtesy of BMW OF NORTH AMERICA, INC.