Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > Vintage RV's
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-04-2012, 03:28 PM   #1
Senior Member
 
Jim_HiTek's Avatar
 
Join Date: Nov 2011
Location: Full time RV'er
Posts: 1,654
'94 Bounder with Parking Brake problem.

My rig isn't exactly a 'Vintage RV' yet, just two years to go, but I thought I'd post this here just in case someone with experience with a '94 Fleetwood Bounder, DP, might know something about my problem.

I am hoping someone might have run into this before and have an explanation of how the Parking Brake (PB) system operates.

This is a diesel pusher, and has a Bendix Spring Actuated parking brake system. The brake drum surrounds the drive shaft. The spring is retracted to release the brake when the engine is running (no engine, no brake operation), and the shift lever is moved to 'P'. This operates a hydraulic system that applies the brake, then you shut off the engine.

My problem seems to have been with this RV for a very long time. When I bought the rig in '04, I found I didn't have PB function and on inspection, found that the mechanical adjustment was set about 1" too loose so that the brake pads didn't contact the brake drum. So I adjusted it correctly and had PB for a while. Over the next several years I would occasionally notice that the PB lamp would flicker a little now and then. Even on smooth roads. Then the PB would try to apply while I was backing up. Finally, it started to come on solid (and apply the PB) while I was driving. If I'd throw it down into 3rd, the brake would release and I could go for miles no problem.

Finally, it got to the point that it was coming on most of the time while in 'D', '3' & sometimes '2'. That ruined the brake pads and scored the drum. When I had it worked on, the guys weren't really familiar with the system and did their best to figure out why it was coming on in 'D'. They thought they had it and rebuilt a hydraulic valve assembly. Also turned the drum and replaced the brake pads. It seemed to be OK.

All was well for around 100 miles. Then the 'PB' lamp started flickering again in 'D'. Too far away and short of time, I didn't take it back to the other shop so I'd like to see if I can get some advice on this forum.

I have Fleetwood & Freightliner (was Oshkosh) schematics but they aren't much help as to the LOCATION of whatever switch is causing the problem.

Anyone here have experience with this Bendix PB system? Note that this system doesn't use the 'Rotten Green Switch' so famous for failing in gas rigs. I talked to Old Used Bear (the expert on the PB in gas rigs) and he assured me my system doesn't use that.

Anyone know where I could get an operational schematic of the PB system? The one provided by Freightliner is useless.
__________________

__________________
'02 Winnebago Journey DL, DSDP, 36' of fun.

Visit my RV Travel & Repair Blog at : http://chaos.goblinbox.com
Jim_HiTek is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 05-08-2012, 09:01 PM   #2
Senior Member
 
4Knights's Avatar
 
Oklahoma Boomers Club
Fleetwood Owners Club
Join Date: Jan 2011
Posts: 1,796
Have you called Brazels RV? They may know some info that will help.
__________________

__________________
Ron & Wendy-Kansas
94 Pace Arrow 34 ft
25 yr Army retired 2006
4Knights is offline   Reply With Quote
Old 05-09-2012, 03:46 PM   #3
Senior Member
 
Jim_HiTek's Avatar
 
Join Date: Nov 2011
Location: Full time RV'er
Posts: 1,654
Quote:
Originally Posted by 4Knights View Post
Have you called Brazels RV? They may know some info that will help.
I find Brazels RV on google but it doesn't seem to be a chassis repair outfit. I gave up this morning and drove down to a local shop here in Flagstaff. They diagnosed it as a bad valve (same one 'refurbished' in Mexico in March) within 1/2 hour and are trying to find the part now.
__________________
'02 Winnebago Journey DL, DSDP, 36' of fun.

Visit my RV Travel & Repair Blog at : http://chaos.goblinbox.com
Jim_HiTek is offline   Reply With Quote
Old 02-19-2015, 11:39 AM   #4
Senior Member
 
Jim_HiTek's Avatar
 
Join Date: Nov 2011
Location: Full time RV'er
Posts: 1,654
Update: Feb. 2015

I forgot to come back and post an update until now. Sorry.

The shop with my help found that the valve was bad. It's a TW-12 and apparently a common Bendix part. Cost for the valve (I ordered it myself online) plus a new pressure switch was $170. With labor, shipping, and tax, whole job came to $386 at Northern Arizona Diesel in Flagstaff, AZ. And yes, I highly recommend them. The work was performed in May of 2014.

One tricky aspect to this part was that the lever cam plate on the TW-12 as it comes from the factory isn't exactly right. The Oshkosh factory originally had a custom plate made. I'm very happy I had the shop keep the old valve while we waited on the new one to be delivered because if they'd thrown it away, we would have lost that custom plate. And no drawings.

BTW, Arizona Diesel told me that Freightliner was not very helpful at all, they just wanted my rig sent down to them (there's a FL shop in Flagstaff). Last time I got a quote from FL, they wanted an outrageous $2200 for just changing out my Master Brake Cylinder. No way. I did the job myself (I'm an amature mechanic) in 2.5 hours.

The tech installing the new valve climbed out from under and told me it didn't fit and that he'd have to order a new cable for $200-$300. Yikes. But the shop manager straightened him out after I objected. They removed the old actuator plate from the old valve, installed it on the new valve, and everything worked great.
__________________
'02 Winnebago Journey DL, DSDP, 36' of fun.

Visit my RV Travel & Repair Blog at : http://chaos.goblinbox.com
Jim_HiTek is offline   Reply With Quote
Reply

Tags
bounder, brake



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:04 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.