• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

NEEDED: Rexroth Hydraulic Pump

Moosewalker

Member
Joined
May 4, 2022
Messages
12
Location
Indiana
I have a 2008 rear engine Thomas Built School Bus with a 6.7 Cummins engine. I recently had the hydraulic pump go out. I have tried to have it rebuilt, they told me it was too far gone, I have called over 50 places looking for a new one. Apparently in 2010 Rexroth was bought out by Bosch, moved to Germany and discontinued my specific pump. I sent it to Florida to a company who said they could make one up for me... they sent it back and said they couldn't. Parker apparently makes a retrofit kit, but it is around $7,000! Somewhere someone has one sitting on a shelf or in a decommissioned bus and I could really use it!
The MNR is 9510 490 198
If anyone has any source or input, Ii would greatly appreciate it
 

John C.

Senior Member
Joined
Jun 11, 2007
Messages
12,872
Location
Northwest
Occupation
Machinery & Equipment Appraiser
What does this hydraulic pump supply that it would cost so much? I wouldn't think that power steering would be that big of deal.
 

Moosewalker

Member
Joined
May 4, 2022
Messages
12
Location
Indiana
The expense mentioned is if I can't find a replacement pump, then I would need a retrofit KIT, which is a lot of parts not just the pump, and the computer needs to be reprogrammed. Also, it doesn't just run the power steering, it also runs the hydraulic radiator fan. The pump needs to push 27 GPM.
 

John C.

Senior Member
Joined
Jun 11, 2007
Messages
12,872
Location
Northwest
Occupation
Machinery & Equipment Appraiser
What kind of drive does it use, belt or gear?
 

John C.

Senior Member
Joined
Jun 11, 2007
Messages
12,872
Location
Northwest
Occupation
Machinery & Equipment Appraiser
So it mounts to the engine on a flange?
 

Moosewalker

Member
Joined
May 4, 2022
Messages
12
Location
Indiana
It actually mounts to the air compressor on what is called an "A" pilot flange. are you familiar?
I need a pump that mounts by an "A" Pilot flange, produces 27 GPM, and has both 2" and 1 3/4" inlet and outlet holes.
 

Moosewalker

Member
Joined
May 4, 2022
Messages
12
Location
Indiana
Thanks for your response. No, I haven't tried them, but I have tried 27 other companies and they all tell me the same thing: "It is no longer available" I will try Flint, because I am always willing to chase down a lead. But I put it out to this group in hopes someone might have a used pump, or know of an alternative pump. I'll give Flint a try and let you know what I find out. Thanks again.
 

Moosewalker

Member
Joined
May 4, 2022
Messages
12
Location
Indiana
So far Panagon Systems has been the most helpful. There at least they gave me over to an engineer who has been helping me look for an alternative pump with the same capacities. But again, I look at both places you recommend. Thanks.
 

partsandservice

Senior Member
Joined
Feb 14, 2011
Messages
847
Location
Georgia
That is just a basic gear pump. Rather than trying to find that pump by part number all you need to do is spec it out. I use Nova Hydraulics in Indianapolis. Flint should be able to spec a gear pump as well. The mount flange will be an SAE standard.. Then all you need is gear housing and port sizes and type. Also net to spec the input shaft spline typically that is SAE as well
 
Last edited:

Moosewalker

Member
Joined
May 4, 2022
Messages
12
Location
Indiana
Partsandservice.... yep, that is the conclusion the guys at Panagon helped me come to.
I will try Nova... that is only an hour from me.
Thanks for the input.
 

Moosewalker

Member
Joined
May 4, 2022
Messages
12
Location
Indiana
Here are the specs for my pump in case anyone has one or knows where I can get one:
2 Bolt "A" pilot
11 spline shaft
3.6 displacement
27GPM
2" and 1 3/4" inlet/outlet ports
 

Moosewalker

Member
Joined
May 4, 2022
Messages
12
Location
Indiana
djordge1, thanks a million for that.. it is awful close. Just a couple numbers off. But I did send an email through their "contact us" button and made inquiry if they can help me or if it is comparable. You must have done a little digging to help find that, thanks for your kindness and time. It would be great if I hear some good news from them... I will keep you posted... thanks again!
 
Top