34 11 220 Removing/installing front brake discs

  R 1200 GS Adventure (0380)
   
   
   
   
   
   
 

Note

Increased lateral runout of the brake disc causes disc-thickness variation ("brake judder").


  Preparatory work
 

Releasing front brake calipers

 

Removing front wheel

  Core activity
 
(-) Removing front brake discs
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Remove screws (1).

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Remove brake disc (2).

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Remove screws (1).

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Remove brake disc (2) and sensor ring (3).

 
(-) Installing front brake discs
 
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Clean the threads.

 
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Note

When installing the brake disc, make sure that there is no dirt or residues of thread-locking compound between the wheel and the brake disc. The mating faces must be smooth and clean.


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Lay brake disc (2) on the wheel rim with the beading (arrow) of the rivets to the outside.

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Install screws (1).

D:\BMW\RepROM_K2x_GS\Datas\RepRom\BMW-Motorrad\SYMB\KG\MODELLE\00\Anziehdrehmoment.gif Tightening torques

Brake disc to front wheel

Pan-head screw, M8 x 22 - 10.9, Replace screw

Micro-encapsulated

tighten by stages in diagonally opposite sequence

 

19 Nm

 
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Clean the threads.

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Lay sensor ring (3) on the wheel rim.

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Lay brake disc (2) on the wheel rim with the beading (arrow) of the rivets to the outside.

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Install screws (1).

D:\BMW\RepROM_K2x_GS\Datas\RepRom\BMW-Motorrad\SYMB\KG\MODELLE\00\Anziehdrehmoment.gif Tightening torques

Brake disc to front wheel

Pan-head screw, M8 x 22 - 10.9, Replace screw

Micro-encapsulated

tighten by stages in diagonally opposite sequence

 

19 Nm

 
 
(-) Install the front wheel
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Seat spacing bushing (3) on the wheel hub at the left.

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Carefully roll the front wheel into position between the fork legs.

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Clean and lubricate quick-release axle (2).

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Optimoly TA

High-temperature assembly grease

18 21 9 062 599

 
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Hand-tighten quick-release axle (2) with hexagon (No. 36 3 691).

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Remove the straps holding down the motorcycle at the rear.

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Firmly compress the front forks several times.

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Firmly tighten stub axle (2).

D:\BMW\RepROM_K2x_GS\Datas\RepRom\BMW-Motorrad\SYMB\KG\MODELLE\00\Anziehdrehmoment.gif Tightening torques

Quick-release axle in axle holder

M24 x 1.5

50 Nm

 
 
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Tighten axle clamping screw (1).

D:\BMW\RepROM_K2x_GS\Datas\RepRom\BMW-Motorrad\SYMB\KG\MODELLE\00\Anziehdrehmoment.gif Tightening torques

Clamping screw (quick-release axle) in slider tube

M8 x 35

19 Nm

 
 
 
(-) Measuring brake-disc runout
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Install dial gauge (No. 00 2 510) in dial-gauge holder (No. 34 2 524) and install measuring adapter (No. 34 2 510).

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Mount dial gauge holder on the brake caliper mount.

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Align dial gauge in such a way that the measuring adapter is in contact with the brake disc close to the outer circumference and the dial gauge is slightly preloaded.

 
Test
 
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Set the dial gauge to "0".

 
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Slowly turn the wheel through at least one complete revolution and observe the dial gauge reading.

 
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The sum of the positive and negative dial-gauge readings is the total runout.

 
D:\BMW\RepROM_K2x_GS\Datas\RepRom\BMW-Motorrad\SYMB\KG\MODELLE\00\techdat.gif Technical data

Brake disc lateral runout, front

At circumference

max 0.15 mm

 

 
 

Result: Lateral runout is excessive.

  Measure:
 
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Check positioning of the brake disc/wheel rim.

 
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Check the wheel rim for damage.

 
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If necessary, check the brake disc.

  Finishing work
 

Securing front brake calipers

 

Bedding in brake pads

 

Final check of work performed