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Transmission Discussion of preventative/corrective maintenance and other technical issues regarding your coach's transmission. |
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#1
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What's the difference between an hd 4060 and a md 4060 Allison tranny?
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Brian Stephens '97 PT43 |
#2
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![]() Quote:
4060 HD 4060 HD 4060P HD 4060PR HD 4060R ![]()
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Michael & Tami Putz
78FC35SB & 83FC35SB Wanderlodge - "Putz'n Around" '90 GL1500 Goldwing | '67 VW Rail | '82 CJ5 Jeep eMail=Mike.Putz@cox.net | Web=http://mikeputz.com/ Solar = https://www.solarpenny.com/SearchResults.asp?Cat=257 FMCA #236459, Good Sam #17270530, Vintage Birds #1509 |
#3
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Well, looking at the factory literature for a 1997 BMC, they say in the 2 axle version has an md4060, while the 3 axle version has an hd4060.
That is all I know, just wondering what the difference was.
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Brian Stephens '97 PT43 |
#4
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you meant 3060,right?
I have no idea what the diff is between the MD and the HD. I suspect maybe cooling,or programing. some of the allisons have a retarder,which may be indicated by the R after the 3060. some have a PTO,which may be the P after the 3060. The 3060 is a very adaptable transmission. It can be a 4 sped,a 5 speed,a 6 speed,all with programing. It can have a transfer case to make it suitable for 4 wheel drive too. I suspect the MD is Medium Duty the HD is heavy duty.
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DO NOT SEND PM email me at randy@randydupree.com only. Randy Dupree 2000 LXI 43 Bainbridge,Ga. Port St Joe Fl. www.buybyebluebird.com randy@randydupree.com |
#5
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I think the difference is max HP and Torq ratings. As I recall, the HD goes up to around 500hp.
In the old series, the 700 was the HD and the 600 was MD.
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Mallie & Karen Lennon Eufaula, Oklahoma 95 42' Wanderlodge Please use e mail instead of Private Message Mallie@EuLake.com |
#6
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FYI in the BMCs the 37 footer has the MD3060 with the Cummins C8.3 engine.
The 40 footer has the HD4060 with the Cummins M11 engine. The C8.3 has an exhaust brake and the M11 has a Jake brake.
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Brad Winter Madera, California 1997, 37' BMC 1999, Jeep Cherokee, Toad 1970, VW Baja Bug, Alternate Toad |
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