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richierich
Samba Member
Joined: December 23, 2004
Posts: 889
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 Posted: Wed Nov 20, 2019 9:01 am Post subject: Replacing idler bearing on MST serpentine |
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Anyone done this? I have one of these system on a motor - not my choice, and the bearing is grumbling. Are they easy to change?
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grandpa red
Samba Member
Joined: November 23, 2018
Posts: 520
Location: Hollister,Ca.
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| Posted: Wed Nov 20, 2019 9:56 am Post subject: Re: Replacing idler bearing on MST serpentine |
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Just order one from mst?
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'72 Beetle |
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grandpa red
Samba Member
Joined: November 23, 2018
Posts: 520
Location: Hollister,Ca.
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| Posted: Wed Nov 20, 2019 10:01 am Post subject: Re: Replacing idler bearing on MST serpentine |
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The bearing assy. just bolts on.
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'72 Beetle |
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Ebel
Samba Member
Joined: June 07, 2015
Posts: 564
Location: New york
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| Posted: Wed Nov 20, 2019 5:51 pm Post subject: Re: Replacing idler bearing on MST serpentine |
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| If you can just take it apart and read the number on the bearings and order new ones. I’ve never touched one of those pulleys myself. But that’s how I’ve done pretty much everything that ever used a standard bearing. |
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richierich
Samba Member
Joined: December 23, 2004
Posts: 889
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| Posted: Thu Nov 21, 2019 5:18 pm Post subject: Re: Replacing idler bearing on MST serpentine |
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Done it now. Thanks for the replies.
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Cusser
Samba Member
Joined: October 02, 2006
Posts: 31361
Location: Hot Arizona
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| Posted: Thu Nov 21, 2019 6:01 pm Post subject: Re: Replacing idler bearing on MST serpentine |
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| richierich wrote: |
| Done it now. Thanks for the replies. |
Ya' gonna tell us what you did, so we can learn from it ???
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1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297 |
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richierich
Samba Member
Joined: December 23, 2004
Posts: 889
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| Posted: Thu Nov 21, 2019 7:02 pm Post subject: Re: Replacing idler bearing on MST serpentine |
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Well, when I had a look at it, the idler wheel is literally the bearing. The belt simply rides on the bearing edge. I sourced a 3303-ZZ Double Row Bearing (17mm x 47mm x 22.5mm) off of Ebay - £10.00 rather than £30.00 for a 'genuine' MST one. The old one unbolts quite easily with a 15mm spanner and new one fitted. Voila.
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Ebel
Samba Member
Joined: June 07, 2015
Posts: 564
Location: New york
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| Posted: Fri Nov 22, 2019 5:24 pm Post subject: Re: Replacing idler bearing on MST serpentine |
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| Told you. Easy right? |
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ach60 
Samba Member
Joined: May 14, 2001
Posts: 4139
Location: Santa Maria
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| Posted: Fri Nov 22, 2019 6:36 pm Post subject: Re: Replacing idler bearing on MST serpentine |
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eBay
The best China can supply
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Good Luck
Al |
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richierich
Samba Member
Joined: December 23, 2004
Posts: 889
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| Posted: Sat Nov 23, 2019 1:49 am Post subject: Re: Replacing idler bearing on MST serpentine |
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The bearing I ended up buying is made in Britain actually. The 'ones MST supply for 3 times the cost are Chinese.
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