ADJUSTING RETRO BRAKES - Ural
THIS ARTICLE WAS WRITTEN BY VANCE BLOSSER AND PUBLISHED HERE WITH HIS PERMISSION.
Adjusting the Retro Hydraulic Brakes
As this is being written (September 2004), the rear and sidecar brakes
on the Retro Sidecar model are hydraulic drum brakes and the front
brake is hydraulic disk. With time, changes may be made to the braking
system that may incorporate improvements or design changes.
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The rear brakes on the Retro cannot be adjusted at the master cylinder
without inviting lockups - just like a car. For some reason, the brake
shoe wear adjusters were omitted on this model.
I have worked around this with the following procedure. This is NOT an
official factory process so use it with caution.
The first step was to accurately determine the point at which the
pressure release hole was uncovered in the master cylinder. I did this with
the following procedure:
1. Had the wrench that adjusts the master cylinder play ready.
2. Deliberately adjusted the master cylinder up (by degrees),
3. Drove a short bit with stop/go usage and checking the brake until it
did start to drag when hot.
(I made sure it did NOT get way hot, just enough for it to start
dragging.)
4. At the point where it was dragging, I pulled into a lot and shut it
down, in neutral. I could feel the bike drag when I pushed it back and
forth. I loosened the master cylinder adjustment until the bike's wheel
suddenly broke free - the hole was uncovered! Then I turned it about
1/8 turn more just to be sure.
I never had a recurrence of rear brake drag since then, it's been 5000
km including Blue Ridge Parkway use.
Now, as to the pedal height - Since the wear adjusters are missing, the
only method left is to tighten the emergency brake cable. It ultimately
pulls on the same mechanism the shoe adjusters would use, and as the
shoes have seated in I have tightened the cable at the central nut on the
emergency brake handle. So far, brake shoe wear between sidecar and
bike is balanced enough that this can be done without either wheel
dragging with the emergency brake off. If the wear on one side should start to
gain, I will either look at a way of tightening one side more, or, more
likely, just trade the shoes from bike to hack.
With the above methods I have a somewhat better and firmer pedal on the
Retro with its hydraulic brakes than I do on the Tourist, which has
cable drum brakes on all three wheels.
This Page was last updated: Monday, April 21, 2008 at 1:07:29 AM
This page was originally posted: 9/13/04; 7:19:43 AM.
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