HELP please 3121RL slide hydraulic total failure

[scott802]

Hi all,
Can anyone please tell me how to manually crank my main slide in and out? I had a complete hydraulic failure and I literally cannot find where to insert the large crank to get this slide in (and out) until I can get the part from Keystone to fix it. It should be easy to spot but it's not.

Thank you!

Scott and Luanne

[scott802]

i actually found the adjustment on top of the motor that i need to insert a 1/4" hex into but there is another step to put the slide into manual mode that I cannot figure out how to do

[Wisconsin Retiree]

Scott, I have the same trailer and have a Lippert Manual on the hydraulic slide system I could send you but it is too large for this forum limits. Email me at muskyman475@gmail.com and I will send it to you. It may help you?

[BB_TX]

It is possible your auto reset circuit breaker has failed. If so, then you could jumper across that breaker to get temporary power to the hydraulic system. If you have a voltmeter, you can check to make sure you have 12 volts on both sides of that breaker.

To run the hydraulic pump manually, you need an Allen wrench bit for a reversible cordless drill to run the pump without power. It would be near impossible to do it by hand.

https://www.amazon.com/MulWark-Diame...a-792286139163

[Carl n Susan]

What "complete hydraulic failure" did you have? The drill motor with a 1/4" hex bit will turn the pump motor but if the hydraulic system is broken, you may not get results. I think you also need to open one of the three valves in the front (battery) compartment. I need to go look at the manual.

[Carl n Susan]

I found the manual and here are the instructions. Note there is no mention of opening a valve. Assuming you have a Level Up system too, there has to be a valve to open. The search continues.
=============================
Manual Override
The Lippert Hydraulic Slideout System can be run with auxiliary power devices like electric drills, ratchet wrenches
or cordless screwdrivers. In the event of electrical or system failure, this manual method of extending and retracting
the slideout room can be used. A standard hand-held drill is all that is required. A standard 38" room will take
approximately 45 seconds to retract. See the instructions below.
1. Remove protective label (Fig. 1).
2. Using a standard hex bit, insert into auxiliary drive device (cordless drill, screwdriver, or ratchet
wrench).
3. Insert hex bit into coupler found under protective label (Fig. 2).
4. Run drill forward or clockwise to extend slideout room and in reverse or counterclockwise to retract
slideout room.

[PA_Alpine_Owner]

Try tapping on the pump motor with a hammer while activating the slide out switch. If the brushes are worn, this may work temporarily to get you out of a jam quickly.

[Carl n Susan]

This is frustrating. I found a reference to opening the valve associated with the jacks but it doesn't accurately describe the valves where there is both hydraulic room and jack system. Anyway, here is another bit of trivia.


Using a 5/32” hex wrench, open the valve by turning the manual override set screw clockwise

[Carl n Susan]

OK, here is a video by ChuckS that shows what you need to do. While he has an Alpine, the same techniques are used by a Montana. It is just the pump and Hydac valves are located differently. From Thread https://www.montanaowners.com/forums...ad.php?t=84598


https://youtu.be/XzPMZHGn5a8

[scott802]

i've located the valve for the slides. It says to turn the valve to get into 'manual' mode but even after i do that and insert the driver into the opening in the back of the motor the slides are NOT moving.
Any ideas?

[scott802]

Chuck, i have the manual but all it says is to remove the sticker on back of the motor and with 1/4 inch driver turn it. No results the slides are not moving so I'm assuming it is not in 'manual mode'

[BB_TX]

Did you try reversing the direction of the drill?

[scott802]

have tried reversing the drill and also got on the phone with Lippert. it's just a 1/4 inch bit on my driver and they said this process should be manually moving the slides, but it is not.
It 'should' be just 2 steps.
1. Isolate the valve for the slide (done). The other 2 valves are clearly labeled for the jacks.
2. turn the value into 'manual' mode until tight with 5/32 bit ( i even tried reversing the other direction
3. remove seal from back of motor and insert the 1/4 inch bit from my driver and turn counter clockwise to bring slides in.

Nothing. It seems like the drill is just turning the motor but no results.
Anyone have any ideas?

The slide hydraulic line literally cracked (I could hear it) as I was retracting the slides. Hydraulic fluid poured out. It is actually a busted fitting.

[Wisconsin Retiree]

It was my understanding that you should be able to turn clockwise to retract and counter clockwise to extent I know on the legs you had to crack open the valve but on the slides the drill alone was supposed to retract???? I was never aware of a manual mode by opening valve for slides???

[BB_TX]

I am afraid you are stuck until you get that hydraulic line repaired. That slide will not move as long as fluid is leaking out. Can’t build enough pressure to move the hydraulic cylinder to move the slide.

[scott802]

Yeah i think we are pretty much stuck until this hydraulic line gets fixed. Each slide side has 2 hydraulic arms. One is totally broken and disconnected. The other one is fully connected. So it makes sense that no matter if you manually run the motor with a drill or not, since one side is completely broken off it won't build pressure at all.
It seems like the manual extend/retract process is only valid if you have hydraulic lines that can actually build up pressure.

in the event you can't build pressure in the hydraulic lines i'm not sure how you're supposed to extend or retract slides?

[BB_TX]

Originally Posted by scott802

….
It seems like the manual extend/retract process is only valid if you have hydraulic lines that can actually build up pressure.

in the event you can't build pressure in the hydraulic lines i'm not sure how you're supposed to extend or retract slides?

Hydraulic cylinders are not something you can just manually push in or out. So, short of disconnecting the cylinders from the slide, there is no way to move the slide. But with no cylinder attached, there would be nothing to keep the slide in place, in or out.

Are traveling? Or at home?

[scott802]

yeah we are travelling actually in VA 5 days from Texas (home). One cylinder of the two on one side is completely disconnected. I'm going underneath to confirm but I'm sure there is almost like a u-joint at the end of that cylinder and that is completely broken off.

[ChuckS]

Since you have a hydraulic line failed NO hydraulic fluid can flow to move the hydraulic slides in for towing..

There IS A WAY.. and I have used this method to manually close a hydraulic slide with gear packs .. like yours will have...

Watch my video.. this is a slow process but when you have no other choice THIS WILL WORK....

** NOTE - you still NEED TO MANUALLY open the Hydac valve for JUST THE SLIDES.... to use this method

https://youtu.be/x1sKi2KWN0Q

[ChuckS]

Originally Posted by scott802

yeah we are travelling actually in VA 5 days from Texas (home). One cylinder of the two on one side is completely disconnected. I'm going underneath to confirm but I'm sure there is almost like a u-joint at the end of that cylinder and that is completely broken off.

On the FRAME side underneath the coroplast belly covering the hydraulic slide cylinders are attached to two brackets... if the nuts came off that end then the cylinder cant do anything because it is free floating