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1984 MCC Regency differential
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Supporting Member of Barthmobile.com 3/11
Picture of Tom  and Julie
posted
Currently broken down in the Upper Peninsula of MI with broken pinion. Looking for leads on a Rockwell/Meritor pinion or differential. Tried Motor Coach Restoration but no answer since yesterday.Not my coach - brothers' so we are his internet connection. Any leads appreciated. Pinion is Rockwell 37711 part number.


1993 32' Regency Wide Body, 4 speed Allison Trans, Front Entry door, Diamond Plate aluminum roof &
1981 Euro 22' w Chevy 350 engine and TH 400 tranny
 
Posts: 1368 | Location: Houston Texas | Member Since: 12-19-2006Reply With QuoteReport This Post
Picture of Doug Smiley
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quote:
Originally posted by Doug Smiley:
[QUOTE]Rockwell/Meritor pinion or differential


try:

http://store.hoosiercrane.com/...ft-pinion-637-7.html

http://www.eprogear.com/rockwell-differentials.html

http://truckdifferentialoutlet...kwell-differentials/

http://www.ringpinion.com/b2c/...&BrandID=21&CatID=35

http://www.bigtruckdifferentials.com/


_________________________

The 82 MCC {by Barth}
is not an rv--
it is a Motor Coach!!

 
Posts: 2060 | Location: Nova Scotia | Member Since: 12-08-2006Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 3/11
Picture of Tom  and Julie
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Thanks Doug: Same problem, NLA. BUT: I learned this 1984 MCC REgency coach was built or modified using the differential from a Government designed large four wheel vehicle. My source thinks it was a Deuce and a Half Army truck. The old, old books from Rockwell say it was a "Project Differential" and not one of the 120, 140 etc series assemblies. The Differential numbers and position of the pinion in the top of the case make it the front differential of a four wheel vehicle. The Pinion has the number 37711 on it. That crosses to a Rockwell pinion for a 23,000 pound class chassis. The differential numbers, of which we found two, cross to a 15,000 pound class axle set and a 17,000 pound axle set. The numbers can't be from the same case, so maybe this was worked on in the past. Replacements are not available so my source has spec'd a new ring and pinion with the same dimensions that are available in the 4.33 ratio we have, or a 4.11 ratio that will give better mileage and lower rpms with a 25,000 pound class rating. We don't know if this is what Barth did or some previous owner but we do know this - the lighter class differential set is too light for a 20,000 pound coach and the pinion cannot be welded no matter what you do. It is too light as a set to take the torque of the DD and any hard strain on the rear wheels (trying to unstuck the coach, driving off road on open fields, race tracks etc), will eventually cause it to break. We have an estimate of $2,000 for a complete rebuild including bearings, shims and seals. This is the plan at present and the winter project for my Yankee brother.


1993 32' Regency Wide Body, 4 speed Allison Trans, Front Entry door, Diamond Plate aluminum roof &
1981 Euro 22' w Chevy 350 engine and TH 400 tranny
 
Posts: 1368 | Location: Houston Texas | Member Since: 12-19-2006Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 2/16
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Tom, seems that the Turd Fairy was present this Holiday.


Mary

Don't mess with us old folks, we don't get old by being stupid!
1968 Barth trailer, 1975 Barth Motorhome and 1985 Barth Motorhome

 
Posts: 1622 | Location: Obion, TN/Memphis, TN | Member Since: 11-23-2004Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 3/11
Picture of Tom  and Julie
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And hopefully it won't land on other MCC coaches in the time span of '82-85.


1993 32' Regency Wide Body, 4 speed Allison Trans, Front Entry door, Diamond Plate aluminum roof &
1981 Euro 22' w Chevy 350 engine and TH 400 tranny
 
Posts: 1368 | Location: Houston Texas | Member Since: 12-19-2006Reply With QuoteReport This Post
Picture of Doug Smiley
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have you checked about parts with this guy??

http://www.army6x6.com/p/blog-page.html

http://www.army6x6parts.com/


_________________________

The 82 MCC {by Barth}
is not an rv--
it is a Motor Coach!!

 
Posts: 2060 | Location: Nova Scotia | Member Since: 12-08-2006Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 3/11
Picture of Tom  and Julie
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No, because we need to get this up to a 23,000 pound class rear end. If this was a PO activity we need to undo it. If it was a Barth "design" we don't want 80's technology when we can get new, better design and better materials. The point of posting was to see if other MCC owners can tell us what they have.


1993 32' Regency Wide Body, 4 speed Allison Trans, Front Entry door, Diamond Plate aluminum roof &
1981 Euro 22' w Chevy 350 engine and TH 400 tranny
 
Posts: 1368 | Location: Houston Texas | Member Since: 12-19-2006Reply With QuoteReport This Post
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Quote: when we can get new, better design and better materials


What has Chris at MCR commented about it?


_________________________

The 82 MCC {by Barth}
is not an rv--
it is a Motor Coach!!

 
Posts: 2060 | Location: Nova Scotia | Member Since: 12-08-2006Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 3/11
Picture of Tom  and Julie
posted Hide Post
Their replacement (not sure what it really is -ring & pinion or differential) runs about 4k, according to my brother who says he spoke to them. The new one will be an off the shelf unit from a class 8 chassis like Freightliner, Western Star, Sterling and Peterbilt.


1993 32' Regency Wide Body, 4 speed Allison Trans, Front Entry door, Diamond Plate aluminum roof &
1981 Euro 22' w Chevy 350 engine and TH 400 tranny
 
Posts: 1368 | Location: Houston Texas | Member Since: 12-19-2006Reply With QuoteReport This Post
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