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elpres
Samba Member
Joined: August 03, 2010
Posts: 321
Location: Denmark
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 Posted: Sun Jul 25, 2021 1:38 am Post subject: Early bay rear drums |
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I have a early bay from dec 69 (model year 70)
I’m sitting here in my vacation trying to solve a problem back home. Just before I took on vacation i dident pass the MOT (inspection test), due to rear brake imbalance.
Now I’m investigating all possible causes.
Could someone clarify the different drums for me? I did find a good thread https://www.thesamba.com/vw/forum/viewtopic.php?t=595632
I think maybe the snouts one my drums are to long as the axle nuts have been cut a bit to make the pin go in.
Is it true that there are 3 widths on the rear shoes?
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Jakob |
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SGKent 
Samba Member
Joined: October 30, 2007
Posts: 41031
Location: Citrus Heights CA (Near Sacramento)
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| Posted: Sun Jul 25, 2021 5:55 am Post subject: Re: Early bay rear drums |
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when you say imbalance you mean what? Unbalanced appearance in parts? Wobbles? One works better than the other so unbalanced braking?
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elpres
Samba Member
Joined: August 03, 2010
Posts: 321
Location: Denmark
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| Posted: Sun Jul 25, 2021 9:36 pm Post subject: Re: Early bay rear drums |
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| SGKent wrote: |
| when you say imbalance you mean what? Unbalanced appearance in parts? Wobbles? One works better than the other so unbalanced braking? |
Yes unbalanced Braking in the rear.
New shoes, lines, drums and brake cylinders.
I did find some fluid in the right side drum. But I couldn’t tell if it came from the cylinder itself or maybe the fluid ran in somehow during bleeding.
But I will look into that of course
I’m a bit confused about what shoes to buy.
When I’m using different websites guides I end up with either 30mm or 45mm wide shoes.
This is what my setup looked like before restauration
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Jakob |
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SGKent
Samba Member
Joined: October 30, 2007
Posts: 41031
Location: Citrus Heights CA (Near Sacramento)
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| Posted: Mon Jul 26, 2021 8:04 am Post subject: Re: Early bay rear drums |
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| I did find some fluid in the right side drum. |
usually fluid on the inside is a leak in the cylinder.
You can measure the drums or old shoes to get the width. I have not owned a 1970 so I do not know the nuances of that year. There could be variations on shoes based on some part numbers that Bus-OK.de has on their website, however the fiche shows the following:
REAR SHOES on 1970 which does not have the axle flange like 1971 on:
to chassis #210 2300 000 (1970) the part number on the fiche is 211-609-537C. listed as 45
https://www.heritagepartscentre.com/uk/211698537ci-brake-shoe-set-rear-45mm.html
https://www.busdepot.com/298
https://www.justkampers.com/us/vw-bus-parts-1968-1...-1970.html
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“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin
Last edited by SGKent on Mon Jul 26, 2021 8:33 am; edited 1 time in total |
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kreemoweet
Samba Member
Joined: March 13, 2008
Posts: 3899
Location: Seattle, WA
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| Posted: Mon Jul 26, 2021 8:31 am Post subject: Re: Early bay rear drums |
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Brake shoes on an early (68-70) bay bus are 45 mm wide, both front and rear.
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elpres
Samba Member
Joined: August 03, 2010
Posts: 321
Location: Denmark
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| Posted: Mon Jul 26, 2021 11:30 pm Post subject: Re: Early bay rear drums |
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Thank you guys for your input,
I might have found the culprit, but i will know for sure when Im back home from vacation. Im suspecting the aftermarket empi drum snouts to be a tad longer than they should be. I wouldent be surprised as I recently returned a set of front empi drums for a bus, because the bearing dust caps couldn’t be put on properly. I’ll get back with my findings.
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