339031 Hydraulic Seal Replacement?

[SuziesMontana]

Howdy,
Has anyone ever replaced the seals on a hydraulic piston? I'm replacing my kitchen slide piston this week. The seal is shot and it's oozing hydraulic fluid when in motion. I have a feeling the living room slide is not far behind it.

My thought was to replace the kitchen slide now, and then see if I can rebuild and replace the seals on it to use for the living room side when it goes. Has anyone rebuilt one of these Pistons?

 

[Carl n Susan]

Search is your friend. It can be done.

Lippert auto leveling hydraulic jack rebuild

has anyone rebuilt their lippert hydraulic jacks, my 8k rear jack is leaking like a sieve, I have contacted Lippert and they dont have a rebuild kit for the 8k ram. looking for part#s if anyone has done theirs Thanks Dan

www.montanaowners.com

Lippert Seal Kit, Repair (16K Jack) 359463

Numerous reports have been made here that Montana/Keystone claims there are no pieces parts for LCI hydraulic jacks. One is expected to buy a new jack when leaks occur. But I recently saw, on another forum, that this is not totally true. Here is a link to Seal Repair Kit for the LCI 16K...

www.montanaowners.com

Level-up Jack leaking fluid

This week I noticed the foot of the drivers side rear jack looked awfully wet, and it was hydraulic fluid. I cleaned up the jack, piston and hose connections real good this morning with the intent of watching the progress of the leak..."slow seep" or "big leak". I think it is a serious...

www.montanaowners.com

 

[SuziesMontana]

Search is your friend. It can be done.

Lippert auto leveling hydraulic jack rebuild

has anyone rebuilt their lippert hydraulic jacks, my 8k rear jack is leaking like a sieve, I have contacted Lippert and they dont have a rebuild kit for the 8k ram. looking for part#s if anyone has done theirs Thanks Dan

www.montanaowners.com

Lippert Seal Kit, Repair (16K Jack) 359463

Numerous reports have been made here that Montana/Keystone claims there are no pieces parts for LCI hydraulic jacks. One is expected to buy a new jack when leaks occur. But I recently saw, on another forum, that this is not totally true. Here is a link to Seal Repair Kit for the LCI 16K...

www.montanaowners.com

Level-up Jack leaking fluid

This week I noticed the foot of the drivers side rear jack looked awfully wet, and it was hydraulic fluid. I cleaned up the jack, piston and hose connections real good this morning with the intent of watching the progress of the leak..."slow seep" or "big leak". I think it is a serious...

www.montanaowners.com

I do appreciate that. I did search and unfortunately those threads you pulled up talk about jacks. I know there are a plethora of Youtube videos on replacing the seals in those. I specifically want to rebuild a slide out piston for the kitchen slider. Wanted to pick anyone's brain that has tried it.

 

[ChuckS]

I’d take the old slide cylinder off and tear it apart and try to match up the seals either at a local hydraulic shop or these folks will be able to help you with their extensive excellent website for seals and such..

Allegheny York Hydraulic and Pneumatic Seals

Allegheny York is a leading distributor and manufacturer of quality seals & packings for commercial, industrial & military applications.

www.alleghenyyork.com

 

[Mikendebbie]

You will need to remove the coroplast bottom to get to the rear anchor point for those slide pistons. I have never done it but I have seen where those things sit in the frame by watching “Keystone Montana factory tour” videos on YouTube. The hydraulic system comes with the chassis to the Montana factory. Lippert puts them in with the chassis build.

 

[ChuckS]

Instead of removing the entire coroplast .. simple locate the slide out hyd rod end .. now look straight across the coroplast covering and make a mark center red between both slide out rods ends

This is where they are both connected to ..

You will most likely have to lower the spare tire to get to the area needed ( I did ) when replacing a hyd hose to one on my main slides

Make a three sided cut in covering leaving the front side still attached and pulling down along with whatever you find there is for insulation

Now you can easily reach up and remove the extend and retract hoses as well as the double nut off the inside cylinder to frame anxhor
Point

Once you are all done swapping in the
New cylinder and leak checking then tape up the theee sides using a good waterproof exterior tape and reinstall spare tire

Images from my work when I replaced the orange extend hose

The black return hose is not in my pic but it’s right there just out of the range of my pic

 

[jetskier]

The slide cylinders are not serviceable. The glands are crimped on - not threaded. I just replaced my 339031 cylinder last week so it's fresh to me.. Amazon had the best price. The level-up jacks can be broken down and seals/wipers, etc replaced.