Author |
Message |
vwnc Samba Member
Joined: March 07, 2002 Posts: 173
|
Posted: Mon Mar 13, 2017 11:46 am Post subject: brake pulling |
|
|
My '69 Panel Bus is beginning to pull right when brakes are applied. My hunch is that the left front wheel cylinder is not engaging or the shoes are grossly out of adjustment. Or, perhaps the left rear wheel cylinder is doing the same. Any thoughts? |
|
Back to top |
|
|
sjbartnik Samba Member
Joined: September 01, 2011 Posts: 5994 Location: Brooklyn
|
Posted: Mon Mar 13, 2017 11:48 am Post subject: Re: brake pulling |
|
|
Well have you adjusted the brakes?
Could also be that the left side brake shoes have become fouled with brake fluid, perhaps from a leaking wheel cylinder, and thus do not provide the same coefficient of friction as the shoes on the right side, causing a pull.
I would verify adjustment first, especially if you're having no other signs of leaking brake fluid, but if the issue is still there then you're gonna have to pull the drums and have a look.
Also verify tire pressures are identical side-to-side _________________ 1965 Volkswagen 1500 Variant S
2000 Kawasaki W650 |
|
Back to top |
|
|
Spike0180 Samba Member
Joined: June 06, 2015 Posts: 2269 Location: Detroit, Michigan
|
Posted: Mon Mar 13, 2017 11:49 am Post subject: Re: brake pulling |
|
|
vwnc wrote: |
My '69 Panel Bus is beginning to pull right when brakes are applied. My hunch is that the left front wheel cylinder is not engaging or the shoes are grossly out of adjustment. Or, perhaps the left rear wheel cylinder is doing the same. Any thoughts? |
So inspect and adjust your brakes? Your theory could definitely be correct. Could be front or back. There is also a equalizer that could be to blame I think (haven't gone through the whole brake system yet because mine was done when I got mine) _________________ Brutis Patches Izabich: 1970 VW Transporter - 1776cc DP
Current State: Projects never truly end...
Location: Grosse Pointe, Michigan
Other cars: 2003 F150, 2003 Jetta GLI vr6-6sp
Sambastic: adj; the quality of being nit picky, elitist, expecting everyone to do things the way they believe is best with no regard to situation, "sambastic" |
|
Back to top |
|
|
vwnc Samba Member
Joined: March 07, 2002 Posts: 173
|
Posted: Mon Mar 13, 2017 11:52 am Post subject: Re: brake pulling |
|
|
Good advice.... thanks. |
|
Back to top |
|
|
sodbuster Samba Member
Joined: August 08, 2004 Posts: 1084 Location: wherever my baywindow takes me.
|
Posted: Mon Mar 13, 2017 1:14 pm Post subject: Re: brake pulling |
|
|
Another thing to look at is the brake flex line at each wheel. When these hoses go bad they can cause all kinds of breaking issues. A brake pull like you describe is high on that list.
These hoses can go bad and collapse internally, restricting flow of fluid and sometimes even trapping brake pressure. |
|
Back to top |
|
|
Danwvw Samba Member
Joined: July 31, 2012 Posts: 8892 Location: Oregon Coast
|
Posted: Mon Mar 13, 2017 1:55 pm Post subject: Re: brake pulling |
|
|
Brakes on a bus need an annual clean and adjust especially if the bus lives out side. The 69 just has drum brakes and are pretty marginal at best. If it's had disk brakes installed then I would say it's a stuck caliper but drum brakes it's probably a stuck wheel cylinder. _________________ 1960 Beetle And 1679cc DP W-100 & Dual Zeniths! |
|
Back to top |
|
|
Eric&Barb Samba Member
Joined: September 19, 2004 Posts: 24732 Location: Olympia Wash Rinse & Repeat
|
Posted: Mon Mar 13, 2017 2:45 pm Post subject: Re: brake pulling |
|
|
Could be a seeping wheel cylinder that is ever so slightly wetting up the shoes on the right. That will make that shoe grab more. Inspection is your only way to find a leak problem.
Or could be one or more wheel cylinders are so rusted up the piston inside has froze up on the left
Looking at brake flex lines is pretty much worthless. Each line has a hose inside a hose, the inner one fails and acts as a one way valve. Pressure goes to that wheel, but will not allow that pressure to make its way back to the MC. If hoses are over eight years, or unknown, time to replace them. _________________ In Stereo, Where Available! |
|
Back to top |
|
|
eddie.would.go Samba Member
Joined: September 02, 2005 Posts: 87 Location: in the garage
|
Posted: Sat Jun 19, 2021 6:34 am Post subject: Re: brake pulling |
|
|
After my bus sat all winter/spring I'm having the same issue, but my camper is pulling left fairly hard when applying the brakes. I did find a leaky wheel cylinder on the right side and replaced it. Put new shoes on and still doing the same thing. It seems to pull harder the harder I depress the pedal. All 4 corners have had the brakes adjusted.
This has been frustrating, I redid all of the brakes (new shoes, soft lines, wheel cylinders and master cylinder) last year when I put the bus on the road and so far my NOS master cylinder has gone caput (it's now been changed), leaky new front wheel cylinder and now a brake pull.
After reading different threads, could this be a bad soft hose? Although they are new? All of the parts aside from the master were from CIP1.com and I'm really starting to doubt the quality of their parts!
Thanks for any input |
|
Back to top |
|
|
Eric&Barb Samba Member
Joined: September 19, 2004 Posts: 24732 Location: Olympia Wash Rinse & Repeat
|
Posted: Sat Jun 19, 2021 8:25 am Post subject: Re: brake pulling |
|
|
Even if a hose is soft, the hydraulic pressure is not going to vastly change from side to side. _________________ In Stereo, Where Available! |
|
Back to top |
|
|
Wildthings Samba Member
Joined: March 13, 2005 Posts: 50332
|
Posted: Sat Jun 19, 2021 1:05 pm Post subject: Re: brake pulling |
|
|
eddie.would.go wrote: |
All of the parts aside from the master were from CIP1.com and I'm really starting to doubt the quality of their parts! |
You may well have identified your problem. |
|
Back to top |
|
|
Starbucket Samba Member
Joined: April 30, 2007 Posts: 4023 Location: WA
|
Posted: Sat Jun 19, 2021 2:26 pm Post subject: Re: brake pulling |
|
|
Jack the front up and have a helper push on brakes and you try to rotate the wheels, if one turns you found the wheel to inspect, leak, frozen cyl., out of adjustment, air in system, or bad hose. Look at backing plates of all four wheels for brake fluid and also the side of tire sidewalls for fluid. |
|
Back to top |
|
|
SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
|
Posted: Sat Jun 19, 2021 5:06 pm Post subject: Re: brake pulling |
|
|
when a steering pulls to one side when the brakes are applied, look to the other side for weakness. The side that works pulls the car in that direction. You can also hold onto the steering wheel on a deserted street with no one behind you while doing about 25 and look at the skid marks to confirm which wheel is not working. Hang onto the steering if you do that because it may really pull to one side. _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
|
Back to top |
|
|
HarryFD Samba Member
Joined: February 24, 2012 Posts: 751 Location: Portland, OR
|
Posted: Sat Jun 19, 2021 11:26 pm Post subject: Re: brake pulling |
|
|
I had a pulling issue not matter how much I adjusted the brakes (I had already replaced the cylinders, shoes and lines with new). I had a shop mic my drums. They were out of spec. Got a set that were in spec and all is well. _________________ 1970 Deluxe Sunroof Bay Brilliant Blue/Cloud White
1973.5 911 Targa
2009 MB C300 |
|
Back to top |
|
|
eddie.would.go Samba Member
Joined: September 02, 2005 Posts: 87 Location: in the garage
|
Posted: Wed Jul 07, 2021 7:41 am Post subject: Re: brake pulling |
|
|
The problem was resolved by replacing the 1 year old rubber brake line. I put a new one in and the stops strait as an arrow again. Thanks for all of the replies and help |
|
Back to top |
|
|
|