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Topic: Hydraulic system Flow diagram needed for 01 U295  (Read 1380 times) previous topic - next topic

Hydraulic system Flow diagram needed for 01 U295

Moderators, If you need to merge/link/etc this to my other topic please do so, but this of a different nature and I want to make sure the right people see it.
Hydraulic pump lost while out sourcing a pump

I am asking for any assistance into Foretravel Hydraulic system design for the steering/ fan cooling circuits. I would nicely ask that only those that know design facts of this system please reply. I need a flow diagram with all components and values for what I will explain below.

My coach is a 2001 U295, but Ive been told by many this identical system is on many other models.

I have contacted both FOT and MOT. They both have told me the same thing. The Hydraulic pump, that handles the power steering and cooling fans, under the part number 41188, last manufactured by QCC, before that Webster/Danfoss/ Sauer Sundstand.....IS DISCONTINUED and no longer being manufacutured. Neither MOT or FOT have any in stock, last one being sold almost a year ago nor do they know that they ever will have another....and in nice terms, "Good luck"
A Tristan at MOT parts dept, did state he had called Foretravel directly, their response was the same other than stating they had been working with the last known manufacturer of the pump to see could they come up with a repair kit, but that was near a year ago and nothing has much progressed. Details of what entails a "Repair kit is unknown"      ( I have been in calls all day with tech engineers at said last known manufacturer, they know nothing of any such plan)

According to many calls I have made to many places that have repaired these, on average several a year for over a decade suffer sheered drive shafts. The one in Albuquerque stated he averages 2+ a year. In all cases, all ordered new pumps.

This can affect a lot of coaches out there. At the moment me personally, and I have spent every waking hour since this past friday trying to source something that will get my stranded coach home. With very little luck.

I have been in touch with the last known Manufacturer of the 41188, a company called QCC. They have stated the pump is no longer manufactured, they have zero in stock, and there are no plans to bring it back into production. They do have other pumps that could fit the application, but that would take a Hydraulic system engineer to be sure it would be 100% correct. They however are assisting me with possible internal parts that may or may not get my old pump back running. However, their drawings are old and out of revision, a few specs are borderline questionable and we dont know if this approach is going to work or not. I will know by the end of the week when said parts arrive, and put it back together and it rotates freely with no issues.... If it does, and we are able to get it home, we are still faced with the fact if it ever fails again there are no pumps out there to obtain. Not this warm fuzzy feeling that has me wanting to take my coach anywhere without a backup that cant even be obtained any more.

based on all I have stated above, I feel strongly this needs an alternate pump sourced, and due to my present situation plan to do so for myself, yet others would eventually benefit. A pump that can be readily obtained and will be properly designed for that application.

Here is where I need some info From those that might know factory facts.

I need flow diagrams of the steering / cooling Hydraulic path. Hopefully showing any devices, Obstructions, T's, orifice plates, Diverters, pressure controllers etc....
I already have all the Factory specs from QCC on the old 41188, I need nothing on that.

As an alternate approach, I have my pump at a Hydraulic /Machine shop. Machining a new drive shaft does not seem to be something anyone is willing to attempt due to the precision that would be required and for it to carry any sort of guarantee. (and yes all guys there were my age or older, machinists for many decades) That shop has offered to assist me with sourcing a new pump approach, but we need all the specs for both the pump as well as the specs for the coaches Hydraulic system as it pertains to the steering/ Cooling fans.

My coach is coming home if it ends out having to be at the end of a tow truck. Have high hopes for the parts that are coming. But after that I want to move forward with finding an alternate pump that would be readily available. Put that new one in my system, have a spare even new, and share all I discover with the rest.

I appreciate any factual assistance in this endeavor.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Hydraulic system Flow diagram needed for 01 U295

Reply #1 –
[Agree that this will stay as its own topic.]
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Hydraulic system Flow diagram needed for 01 U295

Reply #2 –
I removed an off-topic post from this discussion.
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Hydraulic system Flow diagram needed for 01 U295

Reply #3 –
Quote from: Michelle –
I removed an off-topic post from this discussion.


Michelle,

As the OP of this thread, the entire thread has gotten.....actually never went.... in the direction of my original question. My searched for information was never provided.

User Jeff has valid views in the respect of the systems he might be talking about...and maybe he wishes to have this post renamed to continue his discussion....But 99.9% of the replies to this thread has anything to do, whatsoever, with my research toward the Hydraulic flow diagram specific to the 2001 U295. You have my permission to delete all of my posts as they relate to this thread.
 
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

SPLIT: Alternative hydraulic pump thoughts (split from Re: Hydraulic system Flow diagram needed for 01 U295)

Reply #4 –
One or more of the messages of this topic have been moved to Foretravel Tech Talk - https://www.foreforums.com/index.php?topic=47549.0 - discussion of alternatives to OEM hydraulic pump
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320