Hydraulic Pump Replacement for My 2002 Suncruiser 32V

[Deben]

I have a 2002 Suncruiser 32v. I am rebuilding the Hydraulics and have completed rebuilding all of the cylinders. The pump ran for 6 or seven cycles over a period of 3 days. Things looked great but, on day three nothing would work. I checked all fuses and solenoids and they seem fine. I am now thinking of just replacing the existing hydraulic pump with an aftermarket pump without all of the wiring. I have looked at some of the simple pendant systems used on other equipment. They produce 3200 PSI. with an output of .9 GPM. This pump would only be used for the slide rooms. Has anyone else attempted this change? Any information or ideas would be greatly appreciated. Thanks for your help have a Blessed Day

 

[Morich]

I'm not following the idea?
If the current problem is the pump not working and you build a second system to move the slides, what will do the leveling?

 

[Deben]

I'm not following the idea?
If the current problem is the pump not working and you build a second system to move the slides, what will do the leveling?

If this works I would add a second system for the leveling legs. Two of these systems would cost half the price of one HWH replacement. They also eliminate all of the problems with wires switches and expensive replacement parts. Simple systems just hook up positive and negative leads and hoses and you are good to go. Just not sure if pressure output is enough at 3200 PSI and .9 GPM. Thank you for any input. Have a blessed day.

 

[Morich]

I always like to take into account the value of the RV when I sell it. This plan seems to cut that value way too much for me to consider doing it!
Just the thought of not having any alarms to tell me a jack has failed and is now hanging down underneath is enough to stop me.

 

[klook]

Its a 2002 and its resale value is not a factor. But working is to the owner. Its not worth what an HWH rebuild would cost likely. I believe he stated he was going to just use it on the slides. My concern would be over stroking it out or in.

 

[Morich]

It's always going to get down to personal choice but when I look at the idea of any single person being able to build a better system than any group like HWH has been building for the past decades and millions of RV, it just seems wrong to try it. Doing without the wires means we have to do without the safety items which are built in. Where do we put the new equipment like the pump and controls? There's not a lot of extra space on most RV!
I see that year/model RV selling in the 15 to 30, 000 dollar range, so I am pretty sure I could get it repaired for far less than $7000 !

When folks ask for advise on ideas, I assume they want an honest answer, not just somebody to tell them to go for it!

 

[klook]

I leave those questions up to the owner and his ability to pull it off. I have been asked to do similar things and I wont as a tech. I don't want the liability or the "ownership" of the system. Does not mean a talented individual cant do it. I changed my 30 amp TT to twin 30 amp breakers and it boogles the mind of even licensed electricians. You'll die in a ball of fire! Unreal. Of course, I have had multiple cases of "licensed electricians" hooking up 30 amp rv plugs to 240v and burning up the whole thing...but what do I know.

 

[RayIN]

What is the model# of your HWH system? At least one model# has a fuse under the pad.
This might be helpful: Winnebago-specific slide room service manual for HWH.

 

[Deben]

It's always going to get down to personal choice but when I look at the idea of any single person being able to build a better system than any group like HWH has been building for the past decades and millions of RV, it just seems wrong to try it. Doing without the wires means we have to do without the safety items which are built in. Where do we put the new equipment like the pump and controls? There's not a lot of extra space on most RV!
I see that year/model RV selling in the 15 to 30, 000 dollar range, so I am pretty sure I could get it repaired for far less than $7000 !

When folks ask for advise on ideas, I assume they want an honest answer, not just somebody to tell them to go for it!

This system is not meant to be better than the HWH system, but it will work as well, be much easier to work on and much less expensive at $600 for both systems. The only safety item that will not work is the light that tells you the legs are retracted. My legs are spring return, so this is not a problem. They cannot deploy on their own. I also always do a walk around and check the legs before leaving a site. The two systems that I plan on putting in will fit under the hood in the space where I removed the HWH system. This will also give me the advantage of identical parts on both systems. If one fails, I can swap parts out to get out of a jam. The replacement parts are far less expensive than the HWH parts. Example solenoids From HWH run around $80 plus shipping. I can purchase solenoids for the new system for $12 on Amazon with free overnight shipping. I am a mechanical design engineer, so I am not going into this with no experience. Remember things do not have to be complex and complicated to work. Sometimes simple is better. Thanks, and have a blessed day

 

[Deben]

I always like to take into account the value of the RV when I sell it. This plan seems to cut that value way too much for me to consider doing it!
Just the thought of not having any alarms to tell me a jack has failed and is now hanging down underneath is enough to stop me.

This cannot happen on my system. It is spring return and cannot deploy on its own. I believe a new simpler easy to use system will not decrease the value, but may increase the value of my RV. Thank you and have a blessed day.

 

[Morich]

What you may be overlooking is what happens if there is a wiring or equipment failure in something like a solenoid and hydraulic pressure is applied to the jack in the wrong way?
If the hydraulic pressure is used to lower the jack as we lift the RV, it certainly has no problem putting the jack down while we are driving. Without an alarm to tell us it is going down, our first warning will be when it is torn off the bottom of the RV!

Or possibly there is no alarm to let us know the jacks are down and we forget to pull them up before we drive off?
The obvious reason for them to put so many wires on the system is the number of things they DO want to happen but also how many things they DON"T want to happen!
Most of us have to admit that we make lots of mistakes!

 

[Deben]

What you may be overlooking is what happens if there is a wiring or equipment failure in something like a solenoid and hydraulic pressure is applied to the jack in the wrong way?
If the hydraulic pressure is used to lower the jack as we lift the RV, it certainly has no problem putting the jack down while we are driving. Without an alarm to tell us it is going down, our first warning will be when it is torn off the bottom of the RV!

Or possibly there is no alarm to let us know the jacks are down and we forget to pull them up before we drive off?
The obvious reason for them to put so many wires on the system is the number of things they DO want to happen but also how many things they DON"T want to happen!
Most of us have to admit that we make lots of mistakes!

This system would release all legs at the same time. The spring returns would force fluid back to the reservoir. Just as designed by HWH. The only way the legs could deploy would be if the pump were started and the and the control switch for a leg was pushed. It would be virtually impossible to do this while driving. Thank you and have a blessed day.

 

[Deben]

Its a 2002 and its resale value is not a factor. But working is to the owner. Its not worth what an HWH rebuild would cost likely. I believe he stated he was going to just use it on the slides. My concern would be over stroking it out or in.

Overstroking is not an issue. The pump has a 3200 psi max. when it reaches that pressure it dumps back into the reservoir just like the HWH system.

 

[klook]

I meant that on the slide outs not the legs. But I however believe you have it firmly figured out. Pics and I write up about it would be nice.

 

[RayIN]

Overstroking is not an issue. The pump has a 3200 psi max. when it reaches that pressure it dumps back into the reservoir just like the HWH system.

Commercially designed and built leveling systems must have many safety features, mainly to prevent lawsuits. I too would like to read about your finished system.