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BMC (Bluebird Motor Coach Unique Issues) If you have a unique issue with your BMC coach and it can't be answered in one of the other forums here, then this is where you can list it.....List your BMC Parts here too.

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Old 03-28-2014
aesdnal aesdnal is offline
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Default Hydraulic Fan Motor

OK..I need information about the hydraulic fan motor and hydraulic diverter valve. First of all, I had a hydraulic leak on my 1996 40' BMC hydraulic fan motor. I pulled it out and took it to a local hydraulic repair shop to rebuild. Come to find out, there is a "Overhung Load Adapter" attached to the front end of the hydraulic motor that has a zerk grease fitting on the top. I called Spartan and they had no idea what I was talking about. I assume this must have been added by Bluebird. The repair shop is researching a repair kit for the OHLA as we believe that is where the seal leak is. If anyone has this same setup, be aware that the OHLA must be greased at least once a year with Lithium grease according to the repair shop.
It is a large hunk of metal almost as large as the hydaulic motor. The fan attaches to the shaft coming from the OHLA. See attached internet photo. Does anyone know the manufacturer of the OHLA? The hydraulic motor is a Cassapra, if that helps.
Spartan suggested that I also replace the Hydraulic diverter valve. Their part number is 0597-MM5 which is a Spartan number, but they could not give me an OEM cross reference. Spartan didn't have any on hand, but is checking with the Manufacturing plant to see if they have any. If anyone has a OEM part number, I would appreciate it.
FYI, don't forget to service the hydraulic tank filter. My filter is a Fleetguard 87610A and Spartan suggest AW 32 hydraulic oil unless you're running Dexron ATF.
Thanks in advance for any help.
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Norbert Tasler
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40' BMC
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Old 03-28-2014
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Well I have been down this road before so maybe I can help
My fan would not turn fast enough to keep the motor cool under extreme conditions. Ie. hot Texas summers or mountain climbing in Colorado Cummins helped diagnose the problems and Spartan told me there was a retrofit diverter available
See my posts about replacing the diverter valve if you have the same issues

These are pictures of my old parts. Call me if you want more info.

Max Hendrix. Cell. 817-312-2208
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Max Hendrix
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96 BMC 40' Sold
2008 HaulMark Super C S&S
Freightliner Chassis w/ 515hp S60 & 12sp Ultrashift
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Old 03-28-2014
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Fan motor adapter
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96 BMC 40' Sold
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Freightliner Chassis w/ 515hp S60 & 12sp Ultrashift
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Old 03-28-2014
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Fan motor
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96 BMC 40' Sold
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Freightliner Chassis w/ 515hp S60 & 12sp Ultrashift
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Old 03-28-2014
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Fan motor. This is the tag from the new motor
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96 BMC 40' Sold
2008 HaulMark Super C S&S
Freightliner Chassis w/ 515hp S60 & 12sp Ultrashift
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Old 03-28-2014
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Zero Max is the name of the co that made the OHLA. I just googled that up and they have a lot of info available on the website.

Max
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96 BMC 40' Sold
2008 HaulMark Super C S&S
Freightliner Chassis w/ 515hp S60 & 12sp Ultrashift
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Old 03-28-2014
aesdnal aesdnal is offline
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Default Hydraulic fan motor

Max:
I had something come up so I could not call you back this evening. Thanks for the information you gave me. I reviewed your previous post you referred too.
All your pics look exactly like my parts. Spartan said they had a rebuild kit for the diverter valve, but it was the same price as a complete new valve. If I can't get the new valve, I'll go for the rebuild kit. The OHLA is the same also. So I'm sure that the repair shop can get one from Zero Max if the seal can't be replace. Thanks again.
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40' BMC
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Old 03-29-2014
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Guy's
Do you know if this is the same setup in the 37' BMC???
TIA


Quote:
Originally Posted by max hendrix View Post
Zero Max is the name of the co that made the OHLA. I just googled that up and they have a lot of info available on the website.

Max
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Larry Dill & Barbara Ribar
Yuma, AZ. 85367
'95 37' BMC 'Pura Vida'
'84 35' FCSB SOLD
2006 Jeep Wrangler Rubicon
sailor7cs@gmail.com
http://www.bbirdmaps.com/user1.cfm?user=26

"Barbara does all the driving, I just hold the wheel"
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Old 03-29-2014
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I don't know anything about the 37' BMC hydraulic system. Sorry
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40' BMC
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Old 03-30-2014
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Quote:
Originally Posted by sailor7cs View Post
Guy's
Do you know if this is the same setup in the 37' BMC???
TIA
Hey Larry, I was gonna get out and check mine out today just to make sure. I'll let you know what I find out, but your's could still be different.
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1994 BMC 37'
2010 Jeep Wrangler Mountain
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