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Red Ryder
Samba Member
Joined: June 26, 2021
Posts: 951
Location: Northern California
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 Posted: Sun Oct 24, 2021 1:32 pm Post subject: Noise from rear drum brakes |
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I recently noticed when braking at almost a stop there is a slight scraping or whooshing sound from Scarlett’s rear brakes just before letting off the pedal. Not a metal-to-metal contact noise, and all braking operation seems normal. Happens in reverse as well. Any ideas, Sambanistas?
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“Most everyone’s mad here. You may have noticed I am not quite all there myself.” — Cheshire Cat, Adventures of Alice in Wonderland
“Scarlett” — 1990 Vanagon Carat Wolfsburg Edition
Tornado Red |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32594
Location: Reading Pennsylvania
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Red Ryder
Samba Member
Joined: June 26, 2021
Posts: 951
Location: Northern California
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| Posted: Sun Oct 24, 2021 4:14 pm Post subject: Re: Noise from rear drum brakes |
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Yes, it is definitely a friction-type sound. Maybe “whooshing” is misleading.
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“Most everyone’s mad here. You may have noticed I am not quite all there myself.” — Cheshire Cat, Adventures of Alice in Wonderland
“Scarlett” — 1990 Vanagon Carat Wolfsburg Edition
Tornado Red |
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the joker
Samba Member
Joined: October 12, 2006
Posts: 1287
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| Posted: Mon Oct 25, 2021 8:39 am Post subject: Re: Noise from rear drum brakes |
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how's your hand brake acting? there's a few inspection holes on the back plate
check out your pads |
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Red Ryder
Samba Member
Joined: June 26, 2021
Posts: 951
Location: Northern California
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| Posted: Mon Oct 25, 2021 10:07 am Post subject: Re: Noise from rear drum brakes |
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Yes, the parking brake is fine. Taking it into the shop tomorrow for a brake inspection on all four corners. Winter arrived here in Nor Cal with a bang this weekend…
_________________
“Most everyone’s mad here. You may have noticed I am not quite all there myself.” — Cheshire Cat, Adventures of Alice in Wonderland
“Scarlett” — 1990 Vanagon Carat Wolfsburg Edition
Tornado Red |
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9.5isCanadian
Samba Member
Joined: September 16, 2017
Posts: 465
Location: In your blind spot.
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| Posted: Mon Oct 25, 2021 12:32 pm Post subject: Re: Noise from rear drum brakes |
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When I had similar sounds from my rear brakes it turned out that my brake adjuster rod had fallen away from the shoes and was laying in the bottom of my drum.
The fork portion was grinding away as I drove.
This here piece -->
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9 1/2 - missing a few pieces.
1987 Getaway Hightop
1980 Sunroof Vanagon
2018 BMW R Nine T
2012 Golf tdi |
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DanHoug
Samba Member
Joined: December 05, 2016
Posts: 4777
Location: Bemidji, MN
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| Posted: Mon Oct 25, 2021 6:23 pm Post subject: Re: Noise from rear drum brakes |
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has the van been parked a while? the drums rust (even discs) and are noisey for a while. it cleans up with just driving.
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-dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
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Red Ryder
Samba Member
Joined: June 26, 2021
Posts: 951
Location: Northern California
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| Posted: Mon Oct 25, 2021 7:26 pm Post subject: Re: Noise from rear drum brakes |
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Thanks for the helpful tips. I will report back after a visit with our mechanic.
_________________
“Most everyone’s mad here. You may have noticed I am not quite all there myself.” — Cheshire Cat, Adventures of Alice in Wonderland
“Scarlett” — 1990 Vanagon Carat Wolfsburg Edition
Tornado Red |
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DuncanS
Samba Member
Joined: October 17, 2013
Posts: 4583
Location: New Hampshire
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| Posted: Mon Oct 25, 2021 7:49 pm Post subject: Re: Noise from rear drum brakes |
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| First thing with wheel noise is to feel for heat. Is anything getting hot? |
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CanStan
Samba Member
Joined: October 16, 2005
Posts: 1037
Location: Calgary, AB
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| Posted: Tue Oct 26, 2021 8:38 am Post subject: Re: Noise from rear drum brakes |
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I can't remember 1000% if the Vanagon and Bay brakes are the same set-up, but on the Bus there's a big 'C' clip and pin that holds the parking brake lever to the brake shoe. I recently had a clip fall off the pin on my Bus, and it was making a light grinding sound from time to time, but it would often go away. Not an aggressive 'metal on metal' sound, just a light rubbing or scraping sound. Everything worked properly, so at first I was thinking it was a small rock or something inside the drum.
As soon as I pulled the drum off, there it was, laying on the wheel cylinder. The 'C' clip had done so many rotations between the drums and shoes, it was worn paper thin. I figured the sound was there when it was riding around the drum, but sometimes it would get thrown onto the wheel cylinder, and the sound would go away. Eventually it would rattle back down, and start the noise again.
Needless to say, pull off the drum, and hopefully the issue will be obvious. Luckily mine was a 5 minute fix with a spare clip I had laying around. |
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Red Ryder
Samba Member
Joined: June 26, 2021
Posts: 951
Location: Northern California
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| Posted: Thu Oct 28, 2021 10:16 am Post subject: Re: Noise from rear drum brakes — SOLVED! |
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Apparently leaking brake cylinders soaked the shoes and caused the noise. New brake cylinders, brake shoes and drums on order…
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“Most everyone’s mad here. You may have noticed I am not quite all there myself.” — Cheshire Cat, Adventures of Alice in Wonderland
“Scarlett” — 1990 Vanagon Carat Wolfsburg Edition
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valvecovergasket
Samba Member
Joined: October 10, 2018
Posts: 1491
Location: pnw
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| Posted: Thu Oct 28, 2021 11:13 am Post subject: Re: Noise from rear drum brakes — SOLVED! |
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| Red Ryder wrote: |
| Apparently leaking brake cylinders soaked the shoes and caused the noise. New brake cylinders, brake shoes and drums on order… |
youre most of the way to the cost of removing the rear drums entirely at that point 
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gone, but not forgotten: '83 tdi westy - swap thread |
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Red Ryder
Samba Member
Joined: June 26, 2021
Posts: 951
Location: Northern California
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| Posted: Thu Oct 28, 2021 5:14 pm Post subject: Re: Noise from rear drum brakes — SOLVED! |
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| valvecovergasket wrote: |
| Red Ryder wrote: |
| Apparently leaking brake cylinders soaked the shoes and caused the noise. New brake cylinders, brake shoes and drums on order… |
youre most of the way to the cost of removing the rear drums entirely at that point |
I assume you are suggesting switching to disk brakes in the rear. Perhaps, but we have one very nice Carat that we are keeping all original.
_________________
“Most everyone’s mad here. You may have noticed I am not quite all there myself.” — Cheshire Cat, Adventures of Alice in Wonderland
“Scarlett” — 1990 Vanagon Carat Wolfsburg Edition
Tornado Red |
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Abscate
Samba Member
Joined: October 05, 2014
Posts: 22648
Location: NYC/Upstate/ROW
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| Posted: Fri Oct 29, 2021 3:50 am Post subject: Re: Noise from rear drum brakes |
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Leave that disc brake for the Blingers.
The drum brakes will lock the wheels and are cheaper and easier to run and maintain , amd give you a much better parking brake
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32594
Location: Reading Pennsylvania
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Red Ryder
Samba Member
Joined: June 26, 2021
Posts: 951
Location: Northern California
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| Posted: Fri Oct 29, 2021 7:52 am Post subject: Re: Noise from rear drum brakes |
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| Abscate wrote: |
Leave that disc brake for the Blingers.
The drum brakes will lock the wheels and are cheaper and easier to run and maintain , amd give you a much better parking brake |
I can see the need for disks on all four corners if you load your van with bigger wheel/tires, steel bumpers, swing out spare, full length roof rack, and three Yakima boxes on top! 
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“Most everyone’s mad here. You may have noticed I am not quite all there myself.” — Cheshire Cat, Adventures of Alice in Wonderland
“Scarlett” — 1990 Vanagon Carat Wolfsburg Edition
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