Harrison Brakes
- Thread starter Ken H.
- Start date
Ken,
I think Dave Lenzi knows a lot about them. He gave me helpful advice and had parts numbers for banjo fittings, etc. I was running for the longest
time with only the mid brakes on my Harrison setup and was happy with their performance, as the fronts needed bleeding. When the mid brake line broke
near the caliper from not having a hose attached, I had zero brakes. I ran into Montgomery, Texas, with only a slight vestige of brakes, and such a
slight vestige, that it wouldn't hold the coach on the level at a stop unless the transmission was in neutral. Paul from Nova Scotia was my helper
then and we got back home with good brakes. I don't know of another guru around. Like many running those Harrison setups, I like them. I know Jim
Bounds does not like them. Stock for Jim or nothing. Can't blame him because of liability concerns, but I think the warranty is expired on the
originals and if they fail, there's a green light for 'improvements'.
Carey
--
Carey from Ennis, Texas
78 Royale, 500 Cadillac, Rance Baxter EFI.
I think Dave Lenzi knows a lot about them. He gave me helpful advice and had parts numbers for banjo fittings, etc. I was running for the longest
time with only the mid brakes on my Harrison setup and was happy with their performance, as the fronts needed bleeding. When the mid brake line broke
near the caliper from not having a hose attached, I had zero brakes. I ran into Montgomery, Texas, with only a slight vestige of brakes, and such a
slight vestige, that it wouldn't hold the coach on the level at a stop unless the transmission was in neutral. Paul from Nova Scotia was my helper
then and we got back home with good brakes. I don't know of another guru around. Like many running those Harrison setups, I like them. I know Jim
Bounds does not like them. Stock for Jim or nothing. Can't blame him because of liability concerns, but I think the warranty is expired on the
originals and if they fail, there's a green light for 'improvements'.
Carey
--
Carey from Ennis, Texas
78 Royale, 500 Cadillac, Rance Baxter EFI.
What does he need Ken? Have him call me. I am on the Black List.
--
Tom McManus
1977 Royale
Chesapeake VA
--
Tom McManus
1977 Royale
Chesapeake VA
Carey & Tom,
Thanks, I've forwarded your info to him.
Ken H.
> What does he need Ken? Have him call me. I am on the Black List.
>
> --
> Tom McManus
> 1977 Royale
>
> Chesapeake VA
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
Thanks, I've forwarded your info to him.
Ken H.
> What does he need Ken? Have him call me. I am on the Black List.
>
> --
> Tom McManus
> 1977 Royale
>
> Chesapeake VA
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
Albert Branscombe was able to help us with our Harrison brakes.
Kimberlea Weeks | GMC Motorhomes International
1402 So. Cage Blvd., Unit 273 | Pharr, TX 78577-6288
612.501.4600 | f.866.519.0047 | www.gmcmi.com
On Wed, Feb 21, 2018 at 5:46 PM, Ken Henderson
wrote:
> Carey & Tom,
>
> Thanks, I've forwarded your info to him.
>
> Ken H.
>
>
>
> > What does he need Ken? Have him call me. I am on the Black List.
> >
> > --
> > Tom McManus
> > 1977 Royale
> >
> > Chesapeake VA
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
Kimberlea Weeks | GMC Motorhomes International
1402 So. Cage Blvd., Unit 273 | Pharr, TX 78577-6288
612.501.4600 | f.866.519.0047 | www.gmcmi.com
On Wed, Feb 21, 2018 at 5:46 PM, Ken Henderson
wrote:
> Carey & Tom,
>
> Thanks, I've forwarded your info to him.
>
> Ken H.
>
>
>
> > What does he need Ken? Have him call me. I am on the Black List.
> >
> > --
> > Tom McManus
> > 1977 Royale
> >
> > Chesapeake VA
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
Ken, the only ones I ever saw were the set qwe took off Stick's coach on your pit a couple years back. Other than needing an 'outlaw' hub, I was
impressed.
--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
impressed.
--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
My setup is Leigh Harrison upgrade to disk brakes on the forward rear axle with OEM drums & parking brake on the rear axle. List compiled during my
own rebuild effort this past November:
1. Rotors: Duralast 5445 (Autozone) or NAPA Premium NB 4885731/NB4885978
Fitment from 1993 (and other years) Ford F250 front rotor
2. Calipers: Cardone 18P4122 (Right) and 18P4123 (Left)
Fitment from 1984 Chevrolet C20 Pickup
3. Pads: Performance Friction 0052.20 Carbon Metallic
4. Wheel Bearings Inner: = Timken Set45 (Timken LM501310 Race & LM501349 Bearing)
Wheel Bearings Outer: = Timken 15243 Race & 15103S Bearing
Bearing Seal: Timken 8974S
Photos here: http://www.gmcmhphotos.com/photos/g7122-leigh-harrison-rear-brake-maintenance.html
--
Wackster - 1976 23' Crestmont
Baltimore, Maryland
own rebuild effort this past November:
1. Rotors: Duralast 5445 (Autozone) or NAPA Premium NB 4885731/NB4885978
Fitment from 1993 (and other years) Ford F250 front rotor
2. Calipers: Cardone 18P4122 (Right) and 18P4123 (Left)
Fitment from 1984 Chevrolet C20 Pickup
3. Pads: Performance Friction 0052.20 Carbon Metallic
4. Wheel Bearings Inner: = Timken Set45 (Timken LM501310 Race & LM501349 Bearing)
Wheel Bearings Outer: = Timken 15243 Race & 15103S Bearing
Bearing Seal: Timken 8974S
Photos here: http://www.gmcmhphotos.com/photos/g7122-leigh-harrison-rear-brake-maintenance.html
--
Wackster - 1976 23' Crestmont
Baltimore, Maryland
Isn't there a set of calipers one could use from a heavy duty truck that
would provide parking brake capability? I do know the Ford super duty has
four wheel disc brakes.
Sammy Williams
Thinking out loud
A water jet could cut out the mounts for them id imagine.
My setup is Leigh Harrison upgrade to disk brakes on the forward rear axle
with OEM drums & parking brake on the rear axle. List compiled during my
own rebuild effort this past November:
1. Rotors: Duralast 5445 (Autozone) or NAPA Premium NB 4885731/NB4885978
Fitment from 1993 (and other years) Ford F250 front rotor
2. Calipers: Cardone 18P4122 (Right) and 18P4123 (Left)
Fitment from 1984 Chevrolet C20 Pickup
3. Pads: Performance Friction 0052.20 Carbon Metallic
4. Wheel Bearings Inner: = Timken Set45 (Timken LM501310 Race & LM501349
Bearing)
Wheel Bearings Outer: = Timken 15243 Race & 15103S Bearing
Bearing Seal: Timken 8974S
Photos here: http://www.gmcmhphotos.com/photos/g7122-leigh-harrison-
rear-brake-maintenance.html
--
Wackster - 1976 23' Crestmont
Baltimore, Maryland
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
would provide parking brake capability? I do know the Ford super duty has
four wheel disc brakes.
Sammy Williams
Thinking out loud
A water jet could cut out the mounts for them id imagine.
My setup is Leigh Harrison upgrade to disk brakes on the forward rear axle
with OEM drums & parking brake on the rear axle. List compiled during my
own rebuild effort this past November:
1. Rotors: Duralast 5445 (Autozone) or NAPA Premium NB 4885731/NB4885978
Fitment from 1993 (and other years) Ford F250 front rotor
2. Calipers: Cardone 18P4122 (Right) and 18P4123 (Left)
Fitment from 1984 Chevrolet C20 Pickup
3. Pads: Performance Friction 0052.20 Carbon Metallic
4. Wheel Bearings Inner: = Timken Set45 (Timken LM501310 Race & LM501349
Bearing)
Wheel Bearings Outer: = Timken 15243 Race & 15103S Bearing
Bearing Seal: Timken 8974S
Photos here: http://www.gmcmhphotos.com/photos/g7122-leigh-harrison-
rear-brake-maintenance.html
--
Wackster - 1976 23' Crestmont
Baltimore, Maryland
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
James,
From your photos and the part numbers supplies I believe the calipers you used are what is referred to as 80mm. According to TSM the
pistons are actually 3 1/32in or 76.9938mm.
http://www.tsmmfg.com/More.../3020.html
I have them on the front and middle wheels of Double Trouble; however, I have the Caddy caliper mounting plates and smaller rotors
on the middle wheels as per:
http://www.gmcmhphotos.com/photos/g3119-cadilac-disk-brakes.html
Sammy,
Yes, there are calipers with built in parking brakes:
1) 2 1/32in piston = 51.5938mm http://www.tsmmfg.com/More.../3110.html
2) 2 13/32in piston = 61.1188mm http://www.tsmmfg.com/More.../3120.html
3) 2 1/32in piston = 61.1188mm http://www.tsmmfg.com/More.../3121.html
However, GMC "folklore" notes these calipers can cause problems if they are not maintained properly as the parking brake function
will not release.
BTW you can find all these calipers on RockAuto for a hell of a lot less than the major auto parts chains or TSM.
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces] On Behalf Of James Wack
Sent: Friday, February 23, 2018 9:55 AM
To: gmclist
Subject: Re: [GMCnet] Harrison Brakes
My setup is Leigh Harrison upgrade to disk brakes on the forward rear axle with OEM drums & parking brake on the rear axle. List
compiled during my own rebuild effort this past November:
1. Rotors: Duralast 5445 (Autozone) or NAPA Premium NB 4885731/NB4885978
Fitment from 1993 (and other years) Ford F250 front rotor
2. Calipers: Cardone 18P4122 (Right) and 18P4123 (Left)
Fitment from 1984 Chevrolet C20 Pickup
3. Pads: Performance Friction 0052.20 Carbon Metallic
4. Wheel Bearings Inner: = Timken Set45 (Timken LM501310 Race & LM501349 Bearing)
Wheel Bearings Outer: = Timken 15243 Race & 15103S Bearing
Bearing Seal: Timken 8974S
Photos here: http://www.gmcmhphotos.com/photos/g7122-leigh-harrison-rear-brake-maintenance.html
--
Wackster - 1976 23' Crestmont
Baltimore, Maryland
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces] On Behalf Of Sammy Williams
Sent: Friday, February 23, 2018 10:04 AM
To: gmclist
Subject: Re: [GMCnet] Harrison Brakes
Isn't there a set of calipers one could use from a heavy duty truck that
would provide parking brake capability? I do know the Ford super duty has
four wheel disc brakes.
Sammy Williams
Thinking out loud
From your photos and the part numbers supplies I believe the calipers you used are what is referred to as 80mm. According to TSM the
pistons are actually 3 1/32in or 76.9938mm.
http://www.tsmmfg.com/More.../3020.html
I have them on the front and middle wheels of Double Trouble; however, I have the Caddy caliper mounting plates and smaller rotors
on the middle wheels as per:
http://www.gmcmhphotos.com/photos/g3119-cadilac-disk-brakes.html
Sammy,
Yes, there are calipers with built in parking brakes:
1) 2 1/32in piston = 51.5938mm http://www.tsmmfg.com/More.../3110.html
2) 2 13/32in piston = 61.1188mm http://www.tsmmfg.com/More.../3120.html
3) 2 1/32in piston = 61.1188mm http://www.tsmmfg.com/More.../3121.html
However, GMC "folklore" notes these calipers can cause problems if they are not maintained properly as the parking brake function
will not release.
BTW you can find all these calipers on RockAuto for a hell of a lot less than the major auto parts chains or TSM.
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces] On Behalf Of James Wack
Sent: Friday, February 23, 2018 9:55 AM
To: gmclist
Subject: Re: [GMCnet] Harrison Brakes
My setup is Leigh Harrison upgrade to disk brakes on the forward rear axle with OEM drums & parking brake on the rear axle. List
compiled during my own rebuild effort this past November:
1. Rotors: Duralast 5445 (Autozone) or NAPA Premium NB 4885731/NB4885978
Fitment from 1993 (and other years) Ford F250 front rotor
2. Calipers: Cardone 18P4122 (Right) and 18P4123 (Left)
Fitment from 1984 Chevrolet C20 Pickup
3. Pads: Performance Friction 0052.20 Carbon Metallic
4. Wheel Bearings Inner: = Timken Set45 (Timken LM501310 Race & LM501349 Bearing)
Wheel Bearings Outer: = Timken 15243 Race & 15103S Bearing
Bearing Seal: Timken 8974S
Photos here: http://www.gmcmhphotos.com/photos/g7122-leigh-harrison-rear-brake-maintenance.html
--
Wackster - 1976 23' Crestmont
Baltimore, Maryland
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces] On Behalf Of Sammy Williams
Sent: Friday, February 23, 2018 10:04 AM
To: gmclist
Subject: Re: [GMCnet] Harrison Brakes
Isn't there a set of calipers one could use from a heavy duty truck that
would provide parking brake capability? I do know the Ford super duty has
four wheel disc brakes.
Sammy Williams
Thinking out loud
Hello Rob,
I believe you correct about my Leigh Harrison brakes using "80mm" calipers. The various GMC references to 80mm calipers added to my confusion during
the rebuild effort due to the piston diameter measuring somewhat less. Did my best to match what I was replacing. Thanks for the links to your brake
photos. BTW, what is the function of the cable and spring return bracket assembly that I see on your rear bogey?
--
Wackster - 1976 23' Crestmont
Baltimore, Maryland
I believe you correct about my Leigh Harrison brakes using "80mm" calipers. The various GMC references to 80mm calipers added to my confusion during
the rebuild effort due to the piston diameter measuring somewhat less. Did my best to match what I was replacing. Thanks for the links to your brake
photos. BTW, what is the function of the cable and spring return bracket assembly that I see on your rear bogey?
--
Wackster - 1976 23' Crestmont
Baltimore, Maryland
James,
Those photos are not mine, they are John Wrights.
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces] On Behalf Of James Wack
Sent: Saturday, February 24, 2018 4:26 AM
To: gmclist
Subject: Re: [GMCnet] Harrison Brakes
Hello Rob,
I believe you correct about my Leigh Harrison brakes using "80mm" calipers. The various GMC references to 80mm calipers added to my
confusion during
the rebuild effort due to the piston diameter measuring somewhat less. Did my best to match what I was replacing. Thanks for the
links to your brake
photos. BTW, what is the function of the cable and spring return bracket assembly that I see on your rear bogey?
--
Wackster - 1976 23' Crestmont
Baltimore, Maryland
Those photos are not mine, they are John Wrights.
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces] On Behalf Of James Wack
Sent: Saturday, February 24, 2018 4:26 AM
To: gmclist
Subject: Re: [GMCnet] Harrison Brakes
Hello Rob,
I believe you correct about my Leigh Harrison brakes using "80mm" calipers. The various GMC references to 80mm calipers added to my
confusion during
the rebuild effort due to the piston diameter measuring somewhat less. Did my best to match what I was replacing. Thanks for the
links to your brake
photos. BTW, what is the function of the cable and spring return bracket assembly that I see on your rear bogey?
--
Wackster - 1976 23' Crestmont
Baltimore, Maryland
