Harrison Brakes are on the agenda this W/end

H

heinz wittenbecher

New member
Mar 1, 1998
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I'm finally getting around to working on the buggy this weekend.

Will be upgrading the TSM's on the front rears to Leigh's brakes.
Will also be installing his Master Cyl, Booster, Brake Lock and Front
Calipers.

Anyone done any/all of it lately? Any words to the wise?

TIA - Heinz
www.bytedesigns.com/gmc
 
I did the whole job last summer. Don't see how I survived without it.
Now I feel in control again. The brake lock REALLY works -- I can hold
my coach with toad on my driveway and you know my driveway!! You'll like
it.
Gary
North Bend, Oregon Coast

> I'm finally getting around to working on the buggy this weekend.
>
> Will be upgrading the TSM's on the front rears to Leigh's brakes.
> Will also be installing his Master Cyl, Booster, Brake Lock and Front
> Calipers.
>
> Anyone done any/all of it lately? Any words to the wise?
>
> TIA - Heinz
> www.bytedesigns.com/gmc
 
Heinz--
More on installing the Harrison system----
1. The booster can be a real trick to get out since the nuts holding it
in place are buried under the dash. Gene Fisher's pages have a very good
description and pix to help you. Wish I had found it before rather than
after!!!
2. After installation and brake bleeding you will be under the
impression that you still have air in the lines (you might, but
first....) but if the bleeding has been done properly the "problem" which
is a very soft pedal is simply that the pads have not seated. You need
to go (carefully) out on the road and make about 20 dead stops from 20-25
mph. With each stop the brakes firm up and after 25 you are about 90%
there. Amazing!!! Again I wish I had know this before re-bleeding the
brakes a bunch of times.
3. Anderson Automotive in Bandon, OR (close to us in North Bend) did my
work and has my recommendation.
Gary
North Bend, Oregon Coast

> I'm finally getting around to working on the buggy this weekend.
>
> Will be upgrading the TSM's on the front rears to Leigh's brakes.
> Will also be installing his Master Cyl, Booster, Brake Lock and Front
> Calipers.
>
> Anyone done any/all of it lately? Any words to the wise?
>
> TIA - Heinz
> www.bytedesigns.com/gmc
 
Heinz:

Have you given any thought as to where you'll locate the Mico lock?? I'm
assuming you got it from Leigh??

Although I've yet to install mine, I've noticed pictures in car magazine's
of them located next to the master cylinder, in fact they're plumbed right
into it.

Paul Bartz

From: Gary Miller [mailto:grizzly]
Sent: Thursday, January 13, 2000 11:45 PM

I did the whole job last summer. Don't see how I survived without it.
Now I feel in control again. The brake lock REALLY works -- I can hold
my coach with toad on my driveway and you know my driveway!! You'll like
it.

> I'm finally getting around to working on the buggy this weekend.
>
> Will be upgrading the TSM's on the front rears to Leigh's brakes.
> Will also be installing his Master Cyl, Booster, Brake Lock and Front
> Calipers.
>
> Anyone done any/all of it lately? Any words to the wise?
 
I am interested in this also, do you have a picture of this mounting ??

gene

>Heinz:
>
>Have you given any thought as to where you'll locate the Mico lock?? I'm
>assuming you got it from Leigh??
>
>Although I've yet to install mine, I've noticed pictures in car magazine's
>of them located next to the master cylinder, in fact they're plumbed right
>into it.
>
> Paul Bartz
>
>From: Gary Miller [mailto:grizzly]
>Sent: Thursday, January 13, 2000 11:45 PM
>
>I did the whole job last summer. Don't see how I survived without it.
>Now I feel in control again. The brake lock REALLY works -- I can hold
>my coach with toad on my driveway and you know my driveway!! You'll like
>it.
>

>
>> I'm finally getting around to working on the buggy this weekend.
>>
>> Will be upgrading the TSM's on the front rears to Leigh's brakes.
>> Will also be installing his Master Cyl, Booster, Brake Lock and Front
>> Calipers.
>>
>> Anyone done any/all of it lately? Any words to the wise?
>
>
Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/
 
Yes, I did get it from Leigh.

I'm thinking just behind the proportioning valve but have not decided.

Gary: where is your lockvalve located?

Have checked out Gene's site for info but as I've just barely been able to
"lurk" during the last little while I may have missed someone mentioning a
site where additional information and/or pics might be posted I'd appreciate
a nudge/reminder of the url if such site(s) might've been mentioned.

TIA - Heinz

> Heinz:
>
> Have you given any thought as to where you'll locate the Mico lock?? I'm
> assuming you got it from Leigh??
>
> Although I've yet to install mine, I've noticed pictures in car magazine's
> of them located next to the master cylinder, in fact they're plumbed right
> into it.
>
> Paul Bartz
>
> From: Gary Miller [mailto:grizzly]
> Sent: Thursday, January 13, 2000 11:45 PM
>
> I did the whole job last summer. Don't see how I survived without it.
> Now I feel in control again. The brake lock REALLY works -- I can hold
> my coach with toad on my driveway and you know my driveway!! You'll like
> it.
>

>
> > I'm finally getting around to working on the buggy this weekend.
> >
> > Will be upgrading the TSM's on the front rears to Leigh's brakes.
> > Will also be installing his Master Cyl, Booster, Brake Lock and Front
> > Calipers.
> >
> > Anyone done any/all of it lately? Any words to the wise?
>
>
 
Gary,
Help!. I've never heard of the "Harrison System". Can you fill me in? Is
there a dealer? Is there a Web Page? Thanks.
Bob M

- -----Original Message-----
From: owner-gmcmotorhome
[mailto:owner-gmcmotorhome]On Behalf Of Gary Miller
Sent: Friday, January 14, 2000 10:10 AM
To: gmcmotorhome
Subject: Re: GMC: Harrison Brakes are on the agenda this W/end

Heinz--
More on installing the Harrison system----
1. The booster can be a real trick to get out since the nuts holding it
in place are buried under the dash. Gene Fisher's pages have a very good
description and pix to help you. Wish I had found it before rather than
after!!!
2. After installation and brake bleeding you will be under the
impression that you still have air in the lines (you might, but
first....) but if the bleeding has been done properly the "problem" which
is a very soft pedal is simply that the pads have not seated. You need
to go (carefully) out on the road and make about 20 dead stops from 20-25
mph. With each stop the brakes firm up and after 25 you are about 90%
there. Amazing!!! Again I wish I had know this before re-bleeding the
brakes a bunch of times.
3. Anderson Automotive in Bandon, OR (close to us in North Bend) did my
work and has my recommendation.
Gary
North Bend, Oregon Coast

> I'm finally getting around to working on the buggy this weekend.
>
> Will be upgrading the TSM's on the front rears to Leigh's brakes.
> Will also be installing his Master Cyl, Booster, Brake Lock and Front
> Calipers.
>
> Anyone done any/all of it lately? Any words to the wise?
>
> TIA - Heinz
> www.bytedesigns.com/gmc
 
>
> Yes, I did get it from Leigh.
>
> I'm thinking just behind the proportioning valve but have not decided.

Heinz,

I would think if you mounted it on the master cylinder before the
combination(aka proportioning) valve that it would result in the piston of
the combi valve moving to the far end of its travel. Since these have been
known to "stick" in that position(I had a brand new one do that when I
installed it), this might not be the best place for the lock valve.

IIRC, Paul removed his combi valve when he installed Leigh's brake kit, so
this wouldn't be a concern for him. Like you, I kept the combi valve when I
went with the TSM brakes.

Patrick

Paul Bartz wrote
> >
> > Have you given any thought as to where you'll locate the
> > Mico lock?? I'm assuming you got it from Leigh??
> >
> > Although I've yet to install mine, I've noticed pictures in
> > car magazine's of them located next to the master cylinder,
> > in fact they're plumbed right into it.
 
Bob,

Leigh Harrison builds and sells the system himself. Check in GMC Motorhome
Marketplace and GMC Motorhome News for ads. You can look at the Marion
pictures on my site for some photos of Leigh's stuff.

Nice guy and good products - a little pricey, but you pay for quality.

Patrick

> Gary,
> Help!. I've never heard of the "Harrison System". Can you
> fill me in? Is
> there a dealer? Is there a Web Page? Thanks.
> Bob M
 
Patrick,
Thanks for the quick reply. I love this net. I found an ad in GMCMM for 6
wheel disc brakes. Are those the right ad? What's your site's URL? Thanks
again.
Bob Mcl

- -----Original Message-----
From: owner-gmcmotorhome
[mailto:owner-gmcmotorhome]On Behalf Of
Patrick.Flowers
Sent: Friday, January 14, 2000 11:43 AM
To: gmcmotorhome
Subject: RE: GMC: Harrison Brakes are on the agenda this W/end

Bob,

Leigh Harrison builds and sells the system himself. Check in GMC Motorhome
Marketplace and GMC Motorhome News for ads. You can look at the Marion
pictures on my site for some photos of Leigh's stuff.

Nice guy and good products - a little pricey, but you pay for quality.

Patrick

> Gary,
> Help!. I've never heard of the "Harrison System". Can you
> fill me in? Is
> there a dealer? Is there a Web Page? Thanks.
> Bob M
 
> Patrick,
> Thanks for the quick reply.

You're welcome.

> I found an ad in GMCMM for 6 wheel disc brakes. Are those
> the right ad?

Yep - should be a Virginia area code.

> What's your site's URL?

http://www.gmcmotorhome.com

Patrick
 
I located my micro lock just behind the proportioning valve so that ONLY the
rear four wheels are locked. It has more than adequate holding power even on
VERY steep grades and allows me to lock the rear wheels while applying driving
power to the front wheels before releasing the brakes -- gives me a little
boost starting from dead still going up a steep and slippery grade--- not
having to deal with the rearward momentum.
Gary
North Bend, Oregon Coast (rain, still)

> Heinz:
>
> Have you given any thought as to where you'll locate the Mico lock?? I'm
> assuming you got it from Leigh??
>
> Although I've yet to install mine, I've noticed pictures in car magazine's
> of them located next to the master cylinder, in fact they're plumbed right
> into it.
>
> Paul Bartz
 
Thanks for the reminder Patrick.

I guess that's why we were going for 'after the valve' when we got close to
almost starting on the project in November.

This time for real though... gotta get the cores back to Leigh :-)

Heinz

BTW, did I miss some other 'picture' links or should I dust off the 'ol
Nikon?

> >
> > Yes, I did get it from Leigh.
> >
> > I'm thinking just behind the proportioning valve but have not decided.
>
> Heinz,
>
> I would think if you mounted it on the master cylinder before the
> combination(aka proportioning) valve that it would result in the piston of
> the combi valve moving to the far end of its travel. Since these have
been
> known to "stick" in that position(I had a brand new one do that when I
> installed it), this might not be the best place for the lock valve.
>
> IIRC, Paul removed his combi valve when he installed Leigh's brake kit, so
> this wouldn't be a concern for him. Like you, I kept the combi valve when
I
> went with the TSM brakes.
>
> Patrick
>
> Paul Bartz wrote
> > >
> > > Have you given any thought as to where you'll locate the
> > > Mico lock?? I'm assuming you got it from Leigh??
> > >
> > > Although I've yet to install mine, I've noticed pictures in
> > > car magazine's of them located next to the master cylinder,
> > > in fact they're plumbed right into it.
>
>
 
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