Jim,
Because we let our planes sit so long and so much dirt builds up on our
wheels and brakes, obviously clean the slide pins and caliper bushes. I
am sure your disk is installed correct and runs true. Roll the plane
slowly and look at the disc track and caliper and check that all runs
true. See the Matco website for tips in installation and caliper
alignment. I have always just slid the caliper where it fit, but there
is actually a procedure. See :
http://static.veracart.com/matco/item_pdfs/2665/document1.pdf<http://stat
ic.veracart.com/matco/item_pdfs/2665/document1.pdf> I have never
needed to lube the caliper slide pins, just a good cleaning and
alignment is all that is normally needed.
Next be sure to clean the disk well. Yours truly squirted Dot 5
silicone fluid on the disk during my bleed and sure enough, less than
smooth performance and a required change of the pad due to poor braking
quality. A good cleaning was all that was needed.
Lastly, the Jamar doesn't normally transmit the vibration of the caliper
if the adjustment forks that attach to your handles are screwed out a
bit. If they are screwed down (toward the cylinder) until the pucks
move in a bit holding slight pressure then your direct hydraulic
transmission of the caliper movement will be quite noticeable.
Congrats on your good looking plane and here's hoping the fly off and
engine break in goes well.
Regards,
Bud
----- Original Message -----
From: jimpuglise@comcast.net<mailto:jimpuglise@comcast.net>
To: Europa List<mailto:europa-list@matronics.com>
Sent: Wednesday, November 30, 2011 12:58 PM
Subject: Europa-List: Chattering brakes
I used the kit-furnished Jamar brake cylinders and Matco calipers.
The brakes work fine, but there is about 1/8 play if you wiggle the
calipers, and they chatter like crazy while in motion. If I exert just
enough pressure to move the pucks a little, the chatter disappears. It
appears to me that there is too much play in the calipers, but we
checked the drawings, and everything is installed properly.
Any ideas?
Jim Puglise
N283JL, now at 10.2 hours
www.aeroelectric.com<http://www.aeroelectric.com/>
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