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Sleek-JetMale Offline
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Post Icon Posted: Mar. 17 2009,3:56 pm Post # 1 see this member send this member a private message  quote this post in reply
Anyone on here work in the above fields?

I gotta tail shaft mounted park brake on the motor home that needs new brake shoes.  Oshkosh/John Deer chassis Ford C6 transmission.  

I'm wondering 1.) how I get the brake to release as it's always actuated when the motorhome is in Park via hydraulic pressure. 2.) Are the brake shoes a Ford part of a chassis part??

Edited by Sleek-Jet on Mar. 17 2009,4:02 pm

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Post Icon Posted: Mar. 17 2009,8:54 pm Post # 2 see this member send this member a private message  quote this post in reply
Quote (Sleek-Jet @ Mar. 17 2009,3:56 pm)
how I get the brake to release as it's always actuated when the motorhome is in Park via hydraulic pressure.

If it were me, I'd take a sharp knife to that Hydraulic Line and make it leak really good....That should release it :D

Sorry, I've worked in the field before....but not that field (I was sorting tomatos in a field :laugh )



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Post Icon Posted: Mar. 18 2009,6:15 am Post # 3 see this member send this member a private message  quote this post in reply
Built a lot of C6's but never worked on those brakes before, how is it actuated, by a solonoid or something?? :stupid might follow that hydraulic line and see where it goes?. :stupid Of course you could just chock the wheels and take it out park to release it and change the linings. Big truck supply house should have the linings I would think!.. :stupid
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Post Icon Posted: Mar. 18 2009,8:52 am Post # 4 see this member send this member a private message  quote this post in reply
Or maybe They Can Be Relined.....

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Post Icon Posted: Mar. 18 2009,9:00 am Post # 5 see this member send this member a private message  quote this post in reply
Maybe AZKC can get some new ones.

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Post Icon Posted: Mar. 18 2009,9:07 am Post # 6 see this member send this member a private message  quote this post in reply
After doing some research, it appears that the brake is a ford part, not a Oshkosh (chassis) part.  I found a chassis repair/service manual on eBay... we'll soon get to the bottom of this. :D

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Carrera EliteMale Offline
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Post Icon Posted: Mar. 18 2009,9:10 am Post # 7 see this member send this member a private message  quote this post in reply
It's A Ford Part?? Now You'll Need To Know The V.I.N. Number, Date Of Manufacture, The Assemly Plant Number, The Assembly Line Number, The Employee Number Of The Worker, ....Then Maybe They Can Get Close To The Right Part..... :laugh  :laugh

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Post Icon Posted: Mar. 18 2009,9:13 am Post # 8 see this member send this member a private message  quote this post in reply
Quote (Carrera Elite @ Mar. 18 2009,9:10 am)
It's A Ford Part?? Now You'll Need To Know The V.I.N. Number, Date Of Manufacture, The Assemly Plant Number, The Assembly Line Number, The Employee Number Of The Worker, ....Then Maybe They Can Get Close To The Right Part..... :laugh  :laugh

I've actually found a couple places that sell shoes, drums, and complete brake assemblies.

Quite a few C6 "industrial" transmissions are found in baggage tugs and the like at many airports.

BTW, the brake is hydraulically actuated.

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Post Icon Posted: Mar. 18 2009,9:15 am Post # 9 see this member send this member a private message  quote this post in reply
A Little Odd Having A Parking Brake That's Hydrolic... :confused  :stupid

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Post Icon Posted: Mar. 18 2009,9:21 am Post # 10 see this member send this member a private message  quote this post in reply
Quote (Carrera Elite @ Mar. 18 2009,9:15 am)
A Little Odd Having A Parking Brake That's Hydrolic... :confused  :stupid

From what I can tell, the hydraulics hold the brake "off".  When in park, the lever is actuated and it relieves the pressure and thus the brake is "on".  

The brakes themselves are hydraulic boosted, there is a second power stearing pump just for the chassis brakes.  So the park brake is a fail safe, if a leak develops and all the fluid to the pump is lost, the park brake will come "on".

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Post Icon Posted: Mar. 18 2009,9:23 am Post # 11 see this member send this member a private message  quote this post in reply
It Would Be My Luck That The Line Would Lose Pressure Out In The Middle Of Nowhere!!  :laugh So It Works Like Air Brakes....

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Post Icon Posted: Mar. 18 2009,9:29 am Post # 12 see this member send this member a private message  quote this post in reply
Does it look like this?

Attached Image
Attached Image

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Post Icon Posted: Mar. 18 2009,9:44 am Post # 13 see this member send this member a private message  quote this post in reply
Quote (Sleek-Jet @ Mar. 18 2009,9:21 am)
Quote (Carrera Elite @ Mar. 18 2009,9:15 am)
A Little Odd Having A Parking Brake That's Hydrolic... :confused  :stupid

From what I can tell, the hydraulics hold the brake "off".  When in park, the lever is actuated and it relieves the pressure and thus the brake is "on".  

The brakes themselves are hydraulic boosted, there is a second power stearing pump just for the chassis brakes.  So the park brake is a fail safe, if a leak develops and all the fluid to the pump is lost, the park brake will come "on".

Sounds like just something else to break. At the wrong time of course.

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Sleek-JetMale Offline
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Post Icon Posted: Mar. 18 2009,9:52 am Post # 14 see this member send this member a private message  quote this post in reply
Quote (GlassMan @ Mar. 18 2009,9:29 am)
Does it look like this?

Yep...  :good

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Post Icon Posted: Mar. 18 2009,10:14 am Post # 15 see this member send this member a private message  quote this post in reply
Then this will help:

http://www.zbag.com/PDF/parkingbrake.pdf

:cool

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Sleek-JetMale Offline
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Post Icon Posted: Mar. 18 2009,10:18 am Post # 16 see this member send this member a private message  quote this post in reply
Quote (GlassMan @ Mar. 18 2009,10:14 am)
Then this will help:

http://www.zbag.com/PDF/parkingbrake.pdf

:cool

Yes it does... thanks..  :beer  :good

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Post Icon Posted: Mar. 18 2009,10:24 am Post # 17 see this member send this member a private message  quote this post in reply
This might help as well:

http://www.rsgear.com/articles/2004_07.pdf

has part #'s, don't know if they are correct, you might try calling one of the shops listed.

Looks like most folks replace the entire unit. I've seen the whole enchilada selling for around a grand!  :eek

It's a fact of Life:

After Monday and Tuesday, even the Calendar says : WTF .......
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Post Icon Posted: Mar. 18 2009,10:27 am Post # 18 see this member send this member a private message  quote this post in reply
Aaron I have worked on a bunch of them over the years. I used to buy the reline kit at the Mack place in Farmington and I'm sure Truck Trailer, Inland Kenworth or Rush Peterbilt have them also. I Made my own counterbore drill bit for the lining and probably still have it. the kit comes with the rivets and I have rivet tools. I'd be glad to help you if you like, I will be in Tucson Sunday to Tuesday.

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Post Icon Posted: Mar. 18 2009,12:36 pm Post # 19 see this member send this member a private message  quote this post in reply
Quote (GlassMan @ Mar. 18 2009,10:24 am)
This might help as well:

http://www.rsgear.com/articles/2004_07.pdf

has part #'s, don't know if they are correct, you might try calling one of the shops listed.

Looks like most folks replace the entire unit. I've seen the whole enchilada selling for around a grand!  :eek

I've found one place that sells rebuilt units for ~250.00...

Wade, I might take you up on that.  If I get it pulled out this weekend I'll give you a call.  Otherwise sometime later in the month... are you back in Tucson every week?

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weldwadeMale Offline
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Post Icon Posted: Mar. 18 2009,1:30 pm Post # 20 see this member send this member a private message  quote this post in reply
Quote (Sleek-Jet @ Mar. 18 2009,12:36 pm)
Quote (GlassMan @ Mar. 18 2009,10:24 am)
This might help as well:

http://www.rsgear.com/articles/2004_07.pdf

has part #'s, don't know if they are correct, you might try calling one of the shops listed.

Looks like most folks replace the entire unit. I've seen the whole enchilada selling for around a grand!  :eek

I've found one place that sells rebuilt units for ~250.00...

Wade, I might take you up on that.  If I get it pulled out this weekend I'll give you a call.  Otherwise sometime later in the month... are you back in Tucson every week?

I'm in Tucson every Sunday through Tuesday evening. The Brake lining kit I am talking about was $25 in the early 90's, I'm sure it is more now but can't be too high. All it consists of is the lining and rivets, it's a somewhat universal kit. Merles might be able to get them also. Give me a call if you would like a hand :phone

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Post Icon Posted: Mar. 19 2009,6:02 am Post # 21 see this member send this member a private message  quote this post in reply
Another problem solved!... :good
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Post Icon Posted: Mar. 19 2009,7:51 am Post # 22 see this member send this member a private message  quote this post in reply
Quote (WATERDOG @ Mar. 18 2009,9:00 am)
Maybe AZKC can get some new ones.

If he ever had time to keep up.  :banghead

SJ maybe check with Utility Trailer they do a lot of relining on site.

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