Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-25-2011, 05:13 PM   #1
2 Rivet Member
 
1975 31' Sovereign
Opelika , Alabama
Join Date: Aug 2011
Posts: 26
Hydraulic leveling jacks

I have a 75-85 sov, once owned by burton scott (airstream mechanic), hence the unofficial multi-year designation. anything that he wanted to add, he did, and one of the things he added was a big hydraulic pump on the tongue by the propane tanks that is connected to two cylinders, one on each side, just in front of the rear wheel. these cylinders are on a heavy frame, which is also connected to a steel slide and when you pump down the cylinders, the slide lowers to the ground, then raises that side of the trailer. valves control which side of the trailer you want to raise.

does anybody else have something like this? can you tell me what it is good for?(you can pick up the wheels but it is hard) should i keep it on or take it off? (it is very heavy, and i could stand to lose the weight)

please help

bob
__________________

__________________
bobnmary is offline   Reply With Quote
Old 10-26-2011, 07:41 AM   #2
Aluminum Falcon Mechanic
 
Darkspeed's Avatar
 
1972 31' Sovereign
Wesley chapel , Florida
Join Date: May 2011
Posts: 1,169
Images: 6
Photos please Bob!
__________________

Darkspeed is offline   Reply With Quote
Old 10-26-2011, 08:19 AM   #3
Rivet Master
 
SteveH's Avatar
 
2005 39' Land Yacht 390 XL 396
Common Sense , Texas
Join Date: Sep 2007
Posts: 5,311
Quote:
Originally Posted by bobnmary View Post
I have a 75-85 sov, once owned by burton scott (airstream mechanic), hence the unofficial multi-year designation. anything that he wanted to add, he did, and one of the things he added was a big hydraulic pump on the tongue by the propane tanks that is connected to two cylinders, one on each side, just in front of the rear wheel. these cylinders are on a heavy frame, which is also connected to a steel slide and when you pump down the cylinders, the slide lowers to the ground, then raises that side of the trailer. valves control which side of the trailer you want to raise.

bob
I've never seen or heard of that before, but think it would be a cool option. I really dislike always having to drag out the various blocks to get the trailer level, side to side, and you must do that before unhitching. However, I don't know what the system weighs.
__________________
Regards,
Steve
SteveH is offline   Reply With Quote
Old 10-26-2011, 11:01 AM   #4
Vintage Kin
 
slowmover's Avatar
 
Fort Worth , Texas
Join Date: Nov 2006
Posts: 7,583
Images: 1
Four hydraulic jacks (on each corner) were a Streamline option for some few years. The system automatically levelled the trailer.

Bair Hydraulic Trailer Leveling

Of course, Streamline had the kind of frame this was easily done.

.
__________________
1990 35' Silver Streak Sterling; 9k GVWR.
2004 DODGE Cummins 305/555; 6-manual; 9k GVWR.
Hensley Arrow. 9-cpm solo, 15-cpm towing
Sold: Silver Streak Model 3411
slowmover is online now   Reply With Quote
Old 10-26-2011, 01:34 PM   #5
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
I have thought of getting a couple cheap 2 ton hydraulic jacks from Harbor Freight and using them to level the trailer by putting them between the axels where I usually put a floor jack when I am working on the brakes. The BAL jacks are not adequate for leveling the trailer more than a small amount. The hydraulic jacks will also take some load off the axels. Something automated would be even better but would most likely impact ground clearance.

Perry
__________________
perryg114 is offline   Reply With Quote
Old 10-26-2011, 04:49 PM   #6
Aluminum Falcon Mechanic
 
Darkspeed's Avatar
 
1972 31' Sovereign
Wesley chapel , Florida
Join Date: May 2011
Posts: 1,169
Images: 6
What I am using is two bulldog 45k side wind jacks. One welded to the frame behind each wheel well. They are driven by 24vdc motors. 17" travel. Will have photos soon
Darkspeed is offline   Reply With Quote
Old 10-26-2011, 05:33 PM   #7
2 Rivet Member
 
1975 31' Sovereign
Opelika , Alabama
Join Date: Aug 2011
Posts: 26
leveling jack pics

here are some pics. the system seems to work ok, although it is hard to pump if you have to pick the wheels on one side all the way off the ground. i want to rebuild the cylinders but i need some parts.

bob
Attached Thumbnails
Click image for larger version

Name:	DSCN0722.jpg
Views:	143
Size:	244.6 KB
ID:	143719   Click image for larger version

Name:	DSCN0723.jpg
Views:	160
Size:	320.8 KB
ID:	143720  

Click image for larger version

Name:	DSCN0724.jpg
Views:	142
Size:	372.7 KB
ID:	143721   Click image for larger version

Name:	DSCN0725.jpg
Views:	164
Size:	277.5 KB
ID:	143722  

__________________
bobnmary is offline   Reply With Quote
Old 10-26-2011, 06:05 PM   #8
Aluminum Falcon Mechanic
 
Darkspeed's Avatar
 
1972 31' Sovereign
Wesley chapel , Florida
Join Date: May 2011
Posts: 1,169
Images: 6
Quote:
Originally Posted by bobnmary View Post
here are some pics. the system seems to work ok, although it is hard to pump if you have to pick the wheels on one side all the way off the ground. i want to rebuild the cylinders but i need some parts.

bob

O'diggidy thats a manual spring return system.. I thought it would be electric/hydraulic..
Darkspeed is offline   Reply With Quote
Old 10-26-2011, 06:35 PM   #9
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,279
Those are single acting jacks similar to what HWH uses in all of their hydraulic leveling systems. The extend solenoid opened when the pump is on to extend the jack, then will open again with the pump off and the jack is then retracted by the spring with the solenoid open. This way, you can always manually retract the jacks with no power (manually open the solenoid) in an emergency situation.
__________________
Lew Farber...ABYC Certified Master Marine Electrician...RVIA Certified Master Tech ...AM Solar Authorized Installation Center...AIRSTREAM Solar & Electrical Specialist...Micro Air 'Easy Start' Sales and Installations
lewster is offline   Reply With Quote
Old 10-26-2011, 07:14 PM   #10
4 Rivet Member
 
KeithC's Avatar
 
1994 34' Excella
1978 31' Sovereign
Mansfield , Georgia
Join Date: Mar 2007
Posts: 261
I love the idea of an automatic hydraulic leveling system. I hate the idea of knowing that at some point it is going to malfunctioning and I would have to learn the system, jack up the whole trailer, and locate the non-working parts and replace.
__________________
KeithC is offline   Reply With Quote
Old 10-26-2011, 08:38 PM   #11
2 Rivet Member
 
1975 31' Sovereign
Opelika , Alabama
Join Date: Aug 2011
Posts: 26
oh yeah, they are single acting cylinders, with big return springs. you pump them down and the springs pull them up when you release the pressure. nobody seen this on any AS before? i admit it all looks very homemade.
__________________
bobnmary is offline   Reply With Quote
Old 10-27-2011, 06:40 AM   #12
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
That looks pretty cool. Can you take a photo from underneath so we can see how those skids are attached and hinged?

Perry
__________________
perryg114 is offline   Reply With Quote
Old 10-27-2011, 09:10 AM   #13
Aluminum Falcon Mechanic
 
Darkspeed's Avatar
 
1972 31' Sovereign
Wesley chapel , Florida
Join Date: May 2011
Posts: 1,169
Images: 6
Is that an adjustable sway link between shock mounts or a position sensor for leveling?

If it is linked to a through frame sway bar that dude has skills.
Darkspeed is offline   Reply With Quote
Old 10-27-2011, 07:21 PM   #14
2 Rivet Member
 
1975 31' Sovereign
Opelika , Alabama
Join Date: Aug 2011
Posts: 26
well, i rebuilt the cylinders today (which were leaking badly) but i had to superglue some o-rings to fit and one of them broke. i need to find a local supply of 3/16ths by 15/16 ID o-rings, and i think i'm good, even though the cylinders are pretty rough. if that doesn't work, i think i can get some similar cylinders pretty cheap. about a 1 1/2 inch bore by 8 inches travel or so. might even be possible to rig it up to work with bottle jacks by removing the pump and plumbing in the fluid in that hole. as for more pics, i don't think it would help much. the shackle for the slide is on the front end of a piece of channel steel that is bolted to the frame where the axles are. the springs are also attached to that channel. the slide is steel, about 3/16ths or 1/2 inch (pretty hefty stuff) about 3-4 feet long.

i have decided to keep it, as long as it works, even though it's not appreciably easier to jack it with the pump than it is to pull up on some lumber. at least it makes it easier to change a flat.

bob

ps, those other gizmos seem to have been some kind of sway control device, and had wires leading to the tongue, but they weren't hooked to anything when i bought it, so i really have no idea what they did.
__________________

__________________
bobnmary is offline   Reply With Quote
Reply

Tags
hydraulic, jack, leveling system


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
1979 28' Excella Leveling System marydixon555 Jacks, Stabilizers, Lifting and Leveling 5 04-28-2011 07:19 PM
LY Hydraulic Leveling System LaCajun Land Yacht/Legacy Motorhomes 3 04-25-2011 08:46 AM
Hydraulic leveling system. boatdoc Jacks, Stabilizers, Lifting and Leveling 18 02-08-2011 06:30 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:09 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.