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Topic: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ** (Read 17027 times) previous topic - next topic

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #375 –
Allan is correct, you'll need that nut to lock on the pulley adapter and also 6 bolts to put the pulley onto the adapter.

For those that are decimal challenged like me,  the pulley adapter nut is 5/8 and pulley bolts 7/16.
Mark & Bev
2001 U295 36' Slide
Cummins ISC 8.3 350HP
Build #5802
Jeep Wrangler Toad

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #376 –
Quote from: propman –
Those who install the new pump, how are you getting the old one rebuild?
You can get a new seal kit from QCC. Once its out it is a very easy rebuild. If even needed at all. For me, its just the fact I want to get my share of use out of the new pump for the $ I spent. After all that happened to me, I totally rebuilt mine with the new shaft ( only available for a short time) and new seal kit.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #377 –
I am the OP of this thread as well as the guy that did ALL the research on this matter as well as the one who got QCC to bring them back into production.

To my knowledge there is no such thing as a "Known bad batch"...the overall design, design, design of the pump in this configuration is the issue. I am not going to rehash all that has been posted here in the near last year, you can read it for yourself if you care to. I also provided FULL details as well as contact information for an individual that engineered a way to overcome this design flaw. I did have him build me one, but to date no one else has contacted him on the matter. If you really want to know all the facts about this potential problem as it relates to any coach that runs this type of pump, read this thread in its entirety.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #378 –
Quote from: Alan & Gerri Ortiz –
In gathering my "rescue kit" after receiving the pump from Simone, I got the pulley online and Simone advises this for the NUT I have seen mentioned.

The pump does not come with the nut.

The drawing calls for

.625-18 UNF-2A thread

 Thought th info might be useful to others doing the same.
Now to get "the adapter".

Kindest regards,


Good info.

I might add the OE shaft comes with a hole in its end, and the OE nut is a Castle nut , If you would take the time to install a small piece of safety wire at the end, should similar ever happen to you then entire failed section will all stay together as one. With a tapered shaft its not going anywhere anyway. Add a catch net out of hardware cloth between the engine mount and rear main bumper, that is the only place it could get out if it ever failed. I was very lucky that day,mine was sitting on top of my large rear mudflap in that area. Personally, on thenut,  I used a dab of  blue thread locker, tqd to 45psi and the safety wire.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #379 –
Received my 41078 hydraulic pump from Simone to add to the spare parts box.  I was a little hesitant to spend the $$ since there does not seem to be a history of failures, but decided to go ahead and bite the bullet. 

Should I order anything else to go with this if I need to replace the original pump in the future?

Thanks for all the organizing mkc1962.
Kevin & Nancy
Okawville, IL
1999 U320 WTFE 40'
Build #5498
Motorcade #19092
2020 Jeep Gladiator

"The harder I work, the luckier I get."

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #380 –
 Kevin has a 320 and his coach has an M-11. Those engines are internal direct drive so it is a complete different set up than what the 8.3 engine has. Mabe this should have been brought up before now.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #381 –
Yep, the M11 has a different drive system (direct gear drive) than an ISC belt driven. The difference has been discussed in depth.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #382 –
Quote from: kstine98 –
Received my 41078 hydraulic pump from Simone to add to the spare parts box.  I was a little hesitant to spend the $$ since there does not seem to be a history of failures, but decided to go ahead and bite the bullet. 

Should I order anything else to go with this if I need to replace the original pump in the future?

Thanks for all the organizing mkc1962.

More than Welcome....I dont know, but as it mounts inside a part of the engine block, is there maybe an Oring around its perimeter?

True no talked about failures that we know of. BUT, was also one of the ones that was discontinued, and for this moment in time being reproduced for how long? and heavily used in FT's. Anything can fail and if you were to lose a pump that is no longer being made, then you will own a very nice mobile home vs a RV.

I personally have had 2 internal driven Hydraulic pumps fail on farm tractors in my past 45 years of owning such.  Both had several thousand hours on them though.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #383 –
Quote from: MarkC –
Rick, correct. Pulley from Cummins and adaptor from FOT.

Mark,

Do you by chance have the part numbers?  I'm in Nacogdoches this week and can pick up the adaptor at the factory.

Thanks!
Joe Phebus and Jaime Trujillo
2002 U270 3410  Build: 5953 Motorcader # 18595
2100 W Solar, 600 AH Battleborn Batteries,  Victron Multi-Plus II 3000 Inverter, Cerbo GX, & MPPT Chargers
1992 Geo Tracker

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #384 –
Been a terrible year on the home front, not much of anything Coach done this year, with very little usage.  BUT, I did finally get my Hydraulic pump, pulley support mod installed. The same item I mentioned in reply #309 of this thread. Very high quality workmanship, meticulously designed, and no doubt will eliminate any of the concerns on my coach of any future possible lateral stress failures. Larry, the engineer that designed it, has now run over 4k miles with his with zero issues. Mine so far has only been run here at the house.

As stated in #309, if interested in such you can get with him at the number I provided, he does still have his prototype on hand. He might offer to build more if asked.

Here is a short video of  mine in operation.

The selected media item is not currently available.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #385 –
That is a nice piece of engineering! and should do the trick to help prevent future failure. Is that bolted to the pump mounting bracket or welded? Has anyone installed their new pump Yet?
My seal is leaking on my pump and 1 cooling fan so I'm going change out the pump, hoses and seal's on both fans this winter.
Mike & Donna Mariana + Angel & Rusty
2003 U295 3620
Build# 6118
2021 Jeep Wrangler 392

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #386 –
Quote from: zmpm01 –
That is a nice piece of engineering! and should do the trick to help prevent future failure. Is that bolted to the pump mounting bracket or welded? Has anyone installed their new pump Yet?
My seal is leaking on my pump and 1 cooling fan so I'm going change out the pump, hoses and seal's on both fans this winter.

Its mounted to the top left bolt that also runs through one mounting ear of the pump. An additional 1/2 hole is drilled through the pump mounting bracket on the far right, just above the other pump mounting bolt. The entire unit is bolted together, and in turn bolted to the main pump bracket.

I plan to install my new pump, when I get around to pulling my leaking radiator, and at the same time replace the weeping seals of my fans.  I just wanted to get this done this fall before we take a short trip.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #387 –
Mike that looks good. Double shearing is a huge improvement. Wonder is the increased mass will effect anything. How often should that bearing be Lubed? At least it will be effortless to access.

Re: Hydraulic pump Failed **ALL FORETRAVEL OWNERS SHOULD READ**

Reply #388 –
Quote from: dsd –
Mike that looks good. Double shearing is a huge improvement. Wonder is the increased mass will effect anything. How often should that bearing be Lubed? At least it will be effortless to access.

As for the increased mass, its all being supported by the main bracket the bearing was floating until it self centered after engine running then it was tightened in place, so zero added weight at the end of the hub coupler. Larry has run his over 4k miles so far with zero  issues.  As for greasing the bearing, I myself will probably grease it every oil change, which is probably way too often. Those industrial bearing hubs tend to run hundreds of hours with no need for regular lubing. The bearing does have seals on both sides of it, but if packed hard enough will ooze out around the seal. I run similar bearings on farm equipment and lube them every few years.

the extra support I think will eliminate the concern of lateral loading as well as give that added support, if the idler were to ever get weak and not noticed in time.
Mike in AL
2001 U295
8.3 ISC 350
Build 5918