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Tires, Wheels, Brakes, Steering and Suspensions Discussion of preventative/corrective maintenance and other technical issues regarding your coach's Tires, Wheels, Brakes, Steering and Suspensions and related components.

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  #11  
Old 02-17-2020
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Dave&Beth Dave&Beth is offline
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Quote:
Originally Posted by gcyeaw View Post
With these jacks the rod is the piston. Somewhere in the forum there is a pic, but there is just one seal.

Here is a thread on one model of the jack. This one has a small cylinder to swing it down, then the main cylinder lifts the coach.

https://www.wanderlodgeownersgroup.c...wh+disassembly

Here is another thread for a different model.

https://www.wanderlodgeownersgroup.c...ssembly&page=4

On the ones I had there was a plug in the bottom of the foot. Take that out and there is a rod that goes through a hole up the center of the piston. The rod is bigger at the bottom and stops the piston from popping out. Unscrew the rod and the piston will pull out to service the seal. etc.
Thank you, i have only seen two styles but have not seen one taken apart yet.
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  #12  
Old 02-17-2020
Clueless Clueless is offline
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Originally Posted by biobug View Post
OK, tell me I'm. Crazy!
I pretty much have everything on our SP working as it should and YES , we still love her and its reliability! The one annoying thing is when parked off level one of the rear Jack's tends to sag just like me. Has anyone tried a seal additive before doing the big job of pulling the unit for rebuild . Going to HWH is out of the question for us at this point.
Oh ya, I tried the additive on myself and it did not help...
We could come by around the first of the month. Call if you need help removing a Jack.
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82 FC 33 SB SOLD
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96 WB
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  #13  
Old 02-17-2020
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Originally Posted by Clueless View Post
We could come by around the first of the month. Call if you need help removing a Jack.
You are welcome to come by. Power available too. As for the Jack's, I am thinking a summer job in Hood River. I will have lots of time to go for an hour before the ice packs and repeat as necessary.
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  #14  
Old 02-17-2020
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Quote:
Originally Posted by Clueless View Post
We could come by around the first of the month. Call if you need help removing a Jack.
Calling Clueless! Calling Clueless,
I too am working on two rear jacks Where are you when one needs help??
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  #15  
Old 02-17-2020
Clueless Clueless is offline
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Originally Posted by Bill Pape View Post
Calling Clueless! Calling Clueless,
I too am working on two rear jacks Where are you when one needs help??
Is there parking there? Currently we are right up the road from the "Chicken Ranch" so it could be a few weeks before we could get there, but looking for something to do.
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82 FC 33 SB SOLD
89 SP 36 Silver Edition SOLD
96 WB
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  #16  
Old 02-17-2020
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Originally Posted by Clueless View Post
Is there parking there? Currently we are right up the road from the "Chicken Ranch" so it could be a few weeks before we could get there, but looking for something to do.
Quick Wit, always a come back
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  #17  
Old 02-17-2020
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Quote:
Originally Posted by Bill Pape View Post
Calling Clueless! Calling Clueless,
I too am working on two rear jacks Where are you when one needs help??
I had my rear jacks sent to HWH and had them rebuilt. One jack had a new cylinder. I had them reinstalled last weekend. I put new springs on them too. All better now
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  #18  
Old 02-18-2020
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Quote:
Originally Posted by Randy Dupree View Post
There is 2 seals,one set of seals on the piston and 1 set where the shaft comes out of the tube.
They can leak without oil hitting the ground.
A few years ago i stopped in at HWH to get a few things done,one of my jacks would not return to the stored position.
HWH told me the piston seal was leaking and fluid was between the piston and the tube seal,which would not let the piston return to stored position.
It would have returned if the bottom tube seal would leak.
and i guess with time it would have leaked too.
So what Johns saying is possible.
Like Gardner, I wasn't aware that some leveling jacks had 2 sets of seals.

The attached drawing shows what I was thinking Biobug's jack was like and I couldn't visualize how enough oil could leak past the seal to let the coach drop without oil running out the bottom?:

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1991 40' WLWB-WTB
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  #19  
Old 02-18-2020
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I have my front two jacks off, but have not gotten around to messing with them.. This is good information.. Has anyone replaced all the hydraulic lines? Mine are looking pretty rough. Are they rubber lines all the way or just at the ends.. looks like they are rubber all the way?
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  #20  
Old 02-18-2020
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Replace your check valve for that cylinder. They will fail allowing small amounts of fluid to slowly leak back into the tank.

I had the same issue with a rear jack and the check valve was damaged at the base possible due to previous raising the jack under high load instead of raising the coach first on the air bags before retracting the rams.
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Last edited by brhodes; 02-18-2020 at 11:53 AM.
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