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Topic: parking brake chamber on my 1990 foretravel grand villa  (Read 1411 times) previous topic - next topic

parking brake chamber on my 1990 foretravel grand villa

hello all, I have a leak on my parking brake chamber , which I think is causing it not to work its been off the vehicle for a long time , I have had to replace most of the hydraulic hoses, I have contacted a company called mill supply , they can supply me with a new one but going to  cost me 700 usd plus postage to uk,.  does anyone know of any other suppliers or even a good second hand breakers where I may be able to get hold of one, is it possible to get a repair kit for it?  and also failing that would it be possible to convert to the old fashioned handbrake mechanism with cable or will that not be strong enough to engage the brake nice and tight so nothing moves , would appreciate any help on this thank you Kev,  ps my Grand villa is built on an Oshkosh chassis 
1990 foretravel grandvilla, Oshkosh chassis
8.2ltr Detroit turbo

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #1 –
So you have hydraulic brakes and the park brake is on the rear of the transmission applied with spring and released by hydraulic pressure from the power steering pump.
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #2 –
Post a pic .  Most of the hydro park brakes default to locked up drive shaft/Parked.

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #3 –
Quote from: red tractor –
So you have hydraulic brakes and the park brake is on the rear of the transmission applied with spring and released by hydraulic pressure from the power steering pump.
Yes that is correct ,  I would post a picture of this part from my workshop manual but I can't see a way of uploading pics , don't know how thanks
1990 foretravel grandvilla, Oshkosh chassis
8.2ltr Detroit turbo

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #4 –
Quote from: red tractor –
So you have hydraulic brakes and the park brake is on the rear of the transmission applied with spring and released by hydraulic pressure from the power steering pump.
Yes that is correct ,  I would post a picture of this part from my workshop manual but I can't see a way of uploading pics , don't know how thanks
Quote from: Protech Racing –
Post a pic .  Most of the hydro park brakes default to locked up drive shaft/Parked.

How can I post a pic of this part , I can't seem to find an option on this site to do that , I have took a photo of it from my Oshkosh manual thanks kev
1990 foretravel grandvilla, Oshkosh chassis
8.2ltr Detroit turbo

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #5 –
Posting a picture: Uploading pictures
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #7 –
Mike,

Wonder what the Chevrolet auto park has in common with the Oshkosh version?
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #8 –
 I have no idea.  The P 30  has a pump that builds pressure and pulls the  cable and releases the BA  spring. There are lots of failures  on the RV forums .

 https://www.millsupply.com/img/page/bk_emgfr.jpg      Might be Oshkosh

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #9 –
You need to send a pm to nitehawk here on the forum he has a coach like yours.
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #10 –
Quote from: Protech Racing –
Post a pic .  Most of the hydro park brakes default to locked up drive shaft/Parked.
Hopefully you will get these photos now thanks
1990 foretravel grandvilla, Oshkosh chassis
8.2ltr Detroit turbo

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #11 –
Quote from: Protech Racing –
I have no idea.  The P 30  has a pump that builds pressure and pulls the  cable and releases the BA  spring. There are lots of failures  on the RV forums .

 https://www.millsupply.com/img/page/bk_emgfr.jpg      Might be Oshkosh
Ki
1990 foretravel grandvilla, Oshkosh chassis
8.2ltr Detroit turbo

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #13 –
Quote from: Protech Racing –
I have no idea.  The P 30  has a pump that builds pressure and pulls the  cable and releases the BA  spring. There are lots of failures  on the RV forums .

 https://www.millsupply.com/img/page/bk_emgfr.jpg      Might be Oshkosh
1990 foretravel grandvilla, Oshkosh chassis
8.2ltr Detroit turbo

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #14 –
I sent the page ,with the original part no. , I'm wondering if it's possible to cross reference this part , you mentioned a Chevy that could be the same , be gratefull if you could find out and let us know ,  have you got any information on some  second hand dealers over there that possibly might have a chamber in stock ?
1990 foretravel grandvilla, Oshkosh chassis
8.2ltr Detroit turbo

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #15 –
 According to the sizes and stroke . It should be rebuildable . Any hydraulic shop should be able to solve the leak issue .  Replace the seals ,chrome the bore ,  make a new bore. etc.  The spring may  be under some preload  and force the case apart when unbolting the end cap.  Be careful .
Baring repairing it ,  replacing it with similar cylinder with external spring should not be that hard .  or expensive .
  If it not in place at the current time. take it to a hydraulic shop . IMHO.

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #16 –
Chevy is not the same . They function very similar but the pieces are very different. 

 There is a fair chance that trucks that are medium weight  with juice brakes ,may have a similar setup  as yours.  Look around for sub 18K trucks that the trans gear would be insufficient for a park brake. Thats is the reason for this setup , the truck is too heavy to park on the trans gear safely and the truck has hydraulic brakes with no air .  Europe has  lots of this size truck.

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #17 –
KSHR2PH01H00001 by HALDEX - PSB HR series
Edit;;
 The copy function used the wrong item . Look around here. This one may be yours.

Remanufactured maxibrake H-Serie Hidráulico Conjunto Primavera Freno de...

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #18 –
Quote from: Protech Racing –
KSHR2PH01H00001 by HALDEX - PSB HR series
Edit;;
 The copy function used the wrong item . Look around here. This one may be yours.

Remanufactured maxibrake H-Serie Hidráulico Conjunto Primavera Freno de...
1990 foretravel grandvilla, Oshkosh chassis
8.2ltr Detroit turbo

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #19 –
Ok , I will do that , when I get home again , I will take it off , and try and get the actual make and model of the chamber , I'm in Spain in lorry at moment and won't be home till 9th October thanks for all your help mutch appreciated ,
1990 foretravel grandvilla, Oshkosh chassis
8.2ltr Detroit turbo

Re: parking brake chamber on my 1990 foretravel grand villa

Reply #20 –
Quote from: kevo0000 –

Les Michaels at freightliner gave me this part no. As an updated no. To which is on the pic I sent which is HDXKSMR1PT40H50034 , if that helps, it's very difficult trying to find certain items for my coach as I live in UK , but i find this forum very useful and the people I've spoken to including yourself are very helpful , thanks to you and anyone that's tried to help me
1990 foretravel grandvilla, Oshkosh chassis
8.2ltr Detroit turbo