I think its more like a servo motor that runs the piston in and out. No power = no movement.
On Fri, Nov 1, 2019 at 12:18 PM Craig via Mercedes <mercedes@okiebenz.com> wrote: > On Fri, 1 Nov 2019 11:58:58 -0400 Jaime Kopchinski via Mercedes > <mercedes@okiebenz.com> wrote: > > > On Fri, Nov 1, 2019 at 11:50 AM Randy Bennell via Mercedes > > <mercedes@okiebenz.com> wrote: > > > > > My mechanic son was telling me this morning, that the new F150's have > > > electric parking brakes that are built in to the rear calipers. He > > > thinks it is a recipe for trouble. He thinks if one plans to keep the > > > vehicle beyond the short term, one must diligently take the rear > > > calipers apart annually and make sure they are clean and well > > > lubricated. He expects these calipers to be very expensive to replace. > > > > I believe nearly all modern cars have this feature now. > > So how does this feature work? > > Are the parking brakes normally on with no electrical power (fail safe) > and then must be turned off by an electrical signal to a solenoid or some > such? > > What happens when the electrical signal or power to the electric parking > brakes fails? Are the parking brakes slammed on immediately? > > (Note: That is how the emergency/parking air brakes on heavy trucks > works. If the gladhand on the red air line comes off the trailer, the > trailer brakes are slammed on -- which is why you have seen a sudden > appearance of two pairs of black skid marks on the road and why it is > so important truckers make sure their gladhands do not come off.) > > Having trailer brakes slammed on is bad enough, what happens when the > rear brakes of a car or truck are slammed on? Would you Joe-average-driver > be able to handle the situation? > > > Craig > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > -- Jaime Kopchinski http://www.jaimekop.com/ _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
