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Topic: Truck/RV/Transmission repair..

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Sleek-Jet

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Posted: Mar. 17 2009,3:56 pm

Post # 1

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. Ã‚Â

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

A dog doesn't care if you're rich or poor, educated or illiterate, clever or dull. Give him your heart and he will give you his.

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BigBoyToys Male

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Posted: Mar. 17 2009,8:54 pm

Post # 2

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

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

)

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GoFastRacer Male

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Posted: Mar. 18 2009,6:15 am

Post # 3

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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Carrera Elite Male

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Posted: Mar. 18 2009,8:52 am

Post # 4

Or maybe They Can Be Relined.....

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WATERDOG

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Posted: Mar. 18 2009,9:00 am

Post # 5

Maybe AZKC can get some new ones.

"Damn you sure know how to fock things up."-GFR

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Sleek-Jet

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Posted: Mar. 18 2009,9:07 am

Post # 6

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.

A dog doesn't care if you're rich or poor, educated or illiterate, clever or dull. Give him your heart and he will give you his.

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Carrera Elite Male

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Posted: Mar. 18 2009,9:10 am

Post # 7

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

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Sleek-Jet

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Posted: Mar. 18 2009,9:13 am

Post # 8

Quote (Carrera Elite @ Mar. 18 2009,9:10 am)

Ã‚Â

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.

A dog doesn't care if you're rich or poor, educated or illiterate, clever or dull. Give him your heart and he will give you his.

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Carrera Elite Male

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Posted: Mar. 18 2009,9:15 am

Post # 9

A Little Odd Having A Parking Brake That's Hydrolic... :confused

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Sleek-Jet

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Posted: Mar. 18 2009,9:21 am

Post # 10

Quote (Carrera Elite @ Mar. 18 2009,9:15 am)

A Little Odd Having A Parking Brake That's Hydrolic... :confused

Ã‚Â

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".

A dog doesn't care if you're rich or poor, educated or illiterate, clever or dull. Give him your heart and he will give you his.

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Carrera Elite Male

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Posted: Mar. 18 2009,9:23 am

Post # 11

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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GlassMan

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Posted: Mar. 18 2009,9:29 am

Post # 12

Does it look like this?

Attached Image

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WATERDOG

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Posted: Mar. 18 2009,9:44 am

Post # 13

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

Ã‚Â

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

The brakes themselves are hydraulic boosted, there is a second power stearing pump just for the chassis brakes. Ã‚Â 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.

"Damn you sure know how to fock things up."-GFR

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Sleek-Jet

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Posted: Mar. 18 2009,9:52 am

Post # 14

Quote (GlassMan @ Mar. 18 2009,9:29 am)

Does it look like this?

Yep...

A dog doesn't care if you're rich or poor, educated or illiterate, clever or dull. Give him your heart and he will give you his.

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GlassMan

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Posted: Mar. 18 2009,10:14 am

Post # 15

Then this will help:

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

:cool

It's a fact of Life:

After Monday and Tuesday, even the Calendar says : WTF .......

| Member # 617 | Joined: 4-29-2004 |

Sleek-Jet

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Posted: Mar. 18 2009,10:18 am

Post # 16

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

A dog doesn't care if you're rich or poor, educated or illiterate, clever or dull. Give him your heart and he will give you his.

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GlassMan

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Posted: Mar. 18 2009,10:24 am

Post # 17

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 .......

| Member # 617 | Joined: 4-29-2004 |

weldwade

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Posted: Mar. 18 2009,10:27 am

Post # 18

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.

Keep your GUNS!

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Sleek-Jet

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Posted: Mar. 18 2009,12:36 pm

Post # 19

Quote (GlassMan @ Mar. 18 2009,10:24 am)

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?

A dog doesn't care if you're rich or poor, educated or illiterate, clever or dull. Give him your heart and he will give you his.

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weldwade

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Posted: Mar. 18 2009,1:30 pm

Post # 20

Quote (Sleek-Jet @ Mar. 18 2009,12:36 pm)

Quote (GlassMan @ Mar. 18 2009,10:24 am)

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

Wade, I might take you up on that. Ã‚Â If I get it pulled out this weekend I'll give you a call. Ã‚Â 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