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Drzdirtbag Samba Member
Joined: September 27, 2014 Posts: 80 Location: Kamloops bc
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Posted: Sat Feb 06, 2016 1:39 pm Post subject: Rear brake drum removal |
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Fellas
I'm having a hard time getting my rear brake drums off of my 76 westy.
All the adjusters are backed off till I can see space between the linings and the drums.
The bus has been sitting for many years, so I thought that the drums where seized onon, so I put a bit of heat around the centre.
Does the large nut hold the drum on too?? Any ideas.
Thanks, Randy
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sjbartnik Samba Member
Joined: September 01, 2011 Posts: 5998 Location: Brooklyn
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Posted: Sat Feb 06, 2016 1:52 pm Post subject: Re: Rear brake drum removal |
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No, on the '76 you do not need to remove the large nut to remove the drum. You undo the two small bolts which you did already and then the drum should come off. Usually though either the shoes are not backed off enough or there may be a wear ridge on the edge of the drum, try backing the shoes off as far as they will go.
It also may be rusted/corroded to the hub - may require some heat and some hammer time. _________________ 1965 Volkswagen 1500 Variant S
2000 Kawasaki W650 |
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Drzdirtbag Samba Member
Joined: September 27, 2014 Posts: 80 Location: Kamloops bc
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Posted: Sat Feb 06, 2016 2:24 pm Post subject: Re: Rear brake drum removal |
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Thanks, I'll try and back them off some more.. Good to to know about the nut.. I thought so just wanted to double check.
Cheers, Randy |
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kreemoweet Samba Member
Joined: March 13, 2008 Posts: 3899 Location: Seattle, WA
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Posted: Sat Feb 06, 2016 2:54 pm Post subject: Re: Rear brake drum removal |
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A thin application of anti-seize on the surfaces where the drum and hub meet will prevent them rusting together as they likely have. _________________ '67 bug: seized by the authorities
'68 bug: seized by the authorities
'71 kombi: not yet seized by the authorities
Stop dead photo links! Post your photos to The Samba Gallery! |
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Tcash Samba Member
Joined: July 20, 2011 Posts: 12844 Location: San Jose, California, USA
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Posted: Sat Feb 06, 2016 6:28 pm Post subject: Re: Rear brake drum removal |
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Give it a few whacks with a 2x4 or block of wood. |
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Amskeptic Samba Member
Joined: October 18, 2002 Posts: 8568 Location: All Across The Country
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Posted: Sat Feb 06, 2016 8:05 pm Post subject: Re: Rear brake drum removal |
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Drzdirtbag wrote: |
Fellas
I'm having a hard time getting my rear brake drums off of my 76 westy.
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Try this . . .
http://www.itinerant-air-cooled.com/viewtopic.php?f=44&t=9102#p163804
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To remove the drums, scribe a scratch between the inside drum hole and the axle coming out the middle, then give it only a little wet of PB Blaster. If it rotates easily but won't come off, look between the lug studs and drum holes for a tiny little bit of space opening up as you pry the outer perimeter of the drum. If you see this little wiggle, the drum is NOT locked to the hub flange, but rather the inner hole of the drum and the axle. A sharp rap to the perimeter of the drum as you pry, will usually spring it free. |
_________________ www.itinerant-air-cooled.com |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50352
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Posted: Sat Feb 06, 2016 8:58 pm Post subject: Re: Rear brake drum removal |
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If you have the ability to remove the axle nut then you don't have to break the drum free from the hub. With the right tools I find removing the nut and hub the easiest way to deal with the brakes. It is also the only way to access the outer wheel seal which I believe should be replaced whenever you rebuild the rear brakes.
This is about the cheapest setup for removing the nut.
http://www2.cip1.com/ProductDetails.asp?ProductCode=ACC-C10-7045 |
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SixStringMadMan Samba Member
Joined: December 02, 2011 Posts: 263 Location: Roseville, CA
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Posted: Sun Feb 07, 2016 7:38 am Post subject: Re: Rear brake drum removal |
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See where the part number is on the outer rim of the drum? take a hammer and a 2x4 and give that spot a liberal whack. Then do the same on the opposite side of the drum. I had the same problem on my 78 and the hammer\wood trick worked like a champ, although it took a few whacks on each side. _________________ 1978 Kombi
http://www.vw-mplate.com/mplate-10020.htm |
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Tcash Samba Member
Joined: July 20, 2011 Posts: 12844 Location: San Jose, California, USA
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Posted: Sun Feb 07, 2016 7:55 am Post subject: Re: Rear brake drum removal |
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Joey Samba Member
Joined: August 12, 2005 Posts: 5366 Location: Nova Scotia - Canada
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Posted: Sun Feb 07, 2016 8:09 am Post subject: Re: Rear brake drum removal |
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The last time I used one of those tools on a stubborn axle nut I was left with a noisy bearing that needed replacing... _________________ Joey
‘60 Kombi - '74 Bus - '79 Panel - '65 Beetle |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50352
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Posted: Sun Feb 07, 2016 9:20 am Post subject: Re: Rear brake drum removal |
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Joey wrote: |
The last time I used one of those tools on a stubborn axle nut I was left with a noisy bearing that needed replacing... |
Whacking on the drum isn't that good on the bearing either. |
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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 Feb 07, 2016 10:13 am Post subject: Re: Rear brake drum removal |
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Drzdirtbag wrote: |
Thanks, I'll try and back them off some more.. Good to to know about the nut.. I thought so just wanted to double check.
Cheers, Randy |
Randy - did you get the drum off/ If not try hitting it with a hard rubber mallet at 10:00 and 2:00 until it comes loose a little then grab it and pull. Hitting it with a steel hammer may break or deform it. An alternative would be a small sledge with a piece of oak in between. Pine is too soft and will absorb the energy needed to break it loose.
One caveat - if it will not turn then a brake shoe(s) is holding it. In that case loosen the adjusters until it turns freely. _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
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Drzdirtbag Samba Member
Joined: September 27, 2014 Posts: 80 Location: Kamloops bc
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Posted: Tue Feb 09, 2016 3:39 pm Post subject: Re: Rear brake drum removal |
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Fellas.. Well I finally got at least one of the drums off!!
I had to use heat several times, beat the heck out of it, finally I had to use a hammer and punch from the backside inspection hole to work it off..
Yes the drums where backed all the way off and turned freely. They where just super rusted onto the axle.. Oh yeah, did I mention that the van has been sitting for over 20 years!!
Well, on to the other side!! And yes, I will be replacing these drums after having to beat on them..
Thanks again fellas for everyone's help and input..
Randy..
I think that this is the last thing I need to do before I bring the van in for inspection to get her back on the road.. So stoked!! |
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lil-jinx Samba Member
Joined: August 14, 2013 Posts: 1109 Location: New Brunswick,Canada
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KailuaVeeDub Samba Member
Joined: November 03, 2012 Posts: 35 Location: Kailua Hawaii
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Posted: Fri Jan 12, 2018 2:23 pm Post subject: Re: Rear brake drum removal |
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what are the specs/max you can turn your rear drums before they are no good? I Have a 76 Bay window and there is a small lip in the inner surface of one of my drums. hoping its salvageable, just can't find the specs been searching without any luck. |
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Westfalia73 Samba Member
Joined: June 07, 2016 Posts: 121 Location: New Zealand
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Posted: Fri Jan 12, 2018 2:48 pm Post subject: Re: Rear brake drum removal |
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IIRC the maximum machining allowance is 0.020 inches (0.50mm) from the original diameter. _________________ 1973 tintop westfalia weekender.
1973 beetle.
1981 Brazilian baywindow kombi. |
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kreemoweet Samba Member
Joined: March 13, 2008 Posts: 3899 Location: Seattle, WA
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Posted: Fri Jan 12, 2018 3:24 pm Post subject: Re: Rear brake drum removal |
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Wear limit is 253.5 mm (9.980 in) diam, turned max diam is 253.2 mm. The numbers should be cast right into the brake drum itself. _________________ '67 bug: seized by the authorities
'68 bug: seized by the authorities
'71 kombi: not yet seized by the authorities
Stop dead photo links! Post your photos to The Samba Gallery! |
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timvw7476 Samba Member
Joined: June 03, 2013 Posts: 2206 Location: seattle
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Posted: Fri Jan 12, 2018 3:35 pm Post subject: Re: Rear brake drum removal |
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don't be too quick to scrap every iron part, drums can shatter, they don't deform
all that much, & your vintage drums are likely >50% better than what you
could have shipped to your door in 48 hours, as long as the inner diameter
is within limits. Old VW pieces tend to be the best stuff to retain on your bus. |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50352
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Posted: Fri Jan 12, 2018 9:03 pm Post subject: Re: Rear brake drum removal |
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KailuaVeeDub wrote: |
what are the specs/max you can turn your rear drums before they are no good? I Have a 76 Bay window and there is a small lip in the inner surface of one of my drums. hoping its salvageable, just can't find the specs been searching without any luck. |
If your brakes haven't been pulsating and your drums are still in spec and not badly scored, you can remove the lip with a 4 -4 1/2" disc grinder or a die grinder with the right stone. |
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skylarkman2 Samba Member
Joined: December 10, 2017 Posts: 24 Location: TX
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Posted: Thu Feb 22, 2018 6:50 pm Post subject: Re: Rear brake drum removal |
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Following all the suggestions trying to remove a rear drum on a 78 bus that I just got to restore.
None of the suggestions worked.
The adjusters were completely frozen. The brake pads look new.
Since I had gotten the drum to move a little off the hub, I knew that it was the brake shoes holding it on.
I released all brake fluid pressure, since I am going to rebuild the cylinders anyway. I also removed the line and bolt holding the cylinder. This gave me just enough space to finally work the drum off.
I have done brake jobs for a lot of years and never had to work so hard to remove a drum.
Just add my suggestion to the rest. |
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