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Tires, Wheels, Brakes, Steering and Suspensions Discussion of preventative/corrective maintenance and other technical issues regarding your coach's Tires, Wheels, Brakes, Steering and Suspensions and related components.

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  #21  
Old 4 Days Ago
1984Lodge's Avatar
1984Lodge 1984Lodge is offline
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I replaced and relocated mine with a modern spin on Wabco 1200.. it’s not as easy as replacement but is sure nice to not have to get under the bus to maintain it.

See my thread here:
https://www.wanderlodgeownersgroup.c...ad.php?t=30117
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Jeff LoGiudice
1984LodgeJeff@gmail.com
Temple Terrace, Florida
1984 Bluebird PT40
#F063411 6V92TA & MT654CR
& 1986 MCI 102A3
6V92TA & HT740 (Sold)
YouTube-Gino's Garage https://www.youtube.com/user/xjrjeff
http://www.bbirdmaps.com/index.cfm #460
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  #22  
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ChrisN ChrisN is offline
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Quote:
Originally Posted by Alfa View Post
I ended up just replacing mine with a new AD-9. The upgraded replacement was not much more than the maintenance parts.

Diego
Is it a direct fit? If it fits with no modifications, that is probably the way to go, at least for now.
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Chris Nicklow
Pittsburgh, PA
1986 PT38 8V92
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  #23  
Old 4 Days Ago
ChrisN ChrisN is offline
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Quote:
Originally Posted by 1984Lodge View Post
I replaced and relocated mine with a modern spin on Wabco 1200.. it’s not as easy as replacement but is sure nice to not have to get under the bus to maintain it.

See my thread here:
https://www.wanderlodgeownersgroup.c...ad.php?t=30117
That’s what I would like to do, but I want to use the bus this weekend and that sounds like a big project.
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Chris Nicklow
Pittsburgh, PA
1986 PT38 8V92
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  #24  
Old 4 Days Ago
Alfa Alfa is offline
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Quote:
Originally Posted by ChrisN View Post
Is it a direct fit? If it fits with no modifications, that is probably the way to go, at least for now.
The AD-9 was a direct fit for my AD-4 which replaced the original AD-2.
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Diego Alfarache
Austin, Texas
1988 WB40
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  #25  
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ChrisN ChrisN is offline
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Quote:
Originally Posted by Alfa View Post
The AD-9 was a direct fit for my AD-4 which replaced the original AD-2.
Diego, I’m glad you mentioned that AD2. A lot of talk about the AD4 and I was assuming that was what was on there. Caught the parts guy in time to get me the kit for the AD2 that I have. I should know better than to order parts before I know what I have. I’m just rebuilding the purge valve for now then later replacing unit with AD9.

Thanks,
Chris
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1986 PT38 8V92
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  #26  
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Alfa Alfa is offline
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Ha! I did the opposite. I thought that I had an AD-2, ordered the parts, then it turned out that one of the POs had upgraded to an AD-4. At that point, I just bought a new AD-9 that the parts place had in stock.

I spent a little more, well probably twice as much, and bought a new Bendix AD-9, rather than a copy. I also installed a new Bendix D-2 governor at the same time. I didn't feel like risking a fight with some unknown Chinese knock-off in a year, so I spent around $400 for the Bendix AD-9, and I think around $30 for the governor.

Diego
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1988 WB40
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  #27  
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kunzelj kunzelj is offline
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88 should be an AD-4 from factory. 87's typically have the AD-2. All are reliable, though the AD-2 is a beast.
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Jeff Kunzelman
Oakville, Manitoba, Canada
1988 FC-35SB 300HP/ZF (2016-current)
1978 GMC Royale 26' (2015-2016)
1982 FC-33SB 250HP (2007-2009)
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  #28  
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Alfa Alfa is offline
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Quote:
Originally Posted by kunzelj View Post
88 should be an AD-4 from factory. 87's typically have the AD-2. All are reliable, though the AD-2 is a beast.
Interesting. My BlueBird binder has the AD-2 manual in it, and inside the blue box was an AD-4 manual with one of the PO's handwriting on it, so I assumed it was installed later.

Diego
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  #29  
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There are no hard-fast rules with Blue Birds, but that has been my observation of when the switch was made. I just rebuild my AD-4 once every few years.
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Jeff Kunzelman
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1988 FC-35SB 300HP/ZF (2016-current)
1978 GMC Royale 26' (2015-2016)
1982 FC-33SB 250HP (2007-2009)
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