Number_Cruncher
Senior Member
- Joined
- Oct 10, 2007
- Messages
- 1,806
- Reaction score
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- Your Mercedes
- 1995 W124 E300D TE
>>the car still rocks (sometimes forward, sometimes backwards) before settling down.
Unlike many drum brakes, the ends of the shoes opposite to the expanding actuator are free to float - in the piccie on Malcolm's post above, you'll notice there's no fixed abutment near the adjuster wheel.
The end of the shoes by the exapnding actuator (the links which pivot and expand as you push the parking brake pedal down) does have a fixed abutment - but, as the shoes expand away from this fixed abutment, there is some clearance.
This clearance is manifested in a bit of free motion even with the brake fully on. Yes, there is more of this uncontrolled motion when the abrake is out of djustment.
The free motion is quite normal for this design of brake.
Unlike many drum brakes, the ends of the shoes opposite to the expanding actuator are free to float - in the piccie on Malcolm's post above, you'll notice there's no fixed abutment near the adjuster wheel.
The end of the shoes by the exapnding actuator (the links which pivot and expand as you push the parking brake pedal down) does have a fixed abutment - but, as the shoes expand away from this fixed abutment, there is some clearance.
This clearance is manifested in a bit of free motion even with the brake fully on. Yes, there is more of this uncontrolled motion when the abrake is out of djustment.
The free motion is quite normal for this design of brake.