Reply
 
Thread Tools Display Modes
Old 04-17-2018, 09:00 AM   #1
Junior Member
 
Join Date: Sep 2015
Posts: 5
Slide out extends when in storage

I have a Sierra 365saqb that when in storage the front slide extends when not being used. This happens even when the battery is not in the camper. Has anybody else experienced this problem?
__________________

Twabak is offline   Reply With Quote
Old 04-17-2018, 09:03 AM   #2
Senior Member
 
Join Date: Feb 2018
Location: Centex
Posts: 182
Quote:
Originally Posted by Twabak View Post
I have a Sierra 365saqb that when in storage the front slide extends when not being used. This happens even when the battery is not in the camper. Has anybody else experienced this problem?
Is the slide hydraulic? Extends how much? Full extension or like a bad check valve, leaking fluid past the ball.
__________________

vmax is offline   Reply With Quote
Old 04-17-2018, 09:09 AM   #3
Junior Member
 
Join Date: Sep 2015
Posts: 5
It extends all the way out. Yes I think is hydraulic. But way would it do it when there is no power supplied?
Twabak is offline   Reply With Quote
Old 04-17-2018, 09:30 AM   #4
Senior Member
 
Join Date: Feb 2018
Location: Centex
Posts: 182
Quote:
Originally Posted by Twabak View Post
It extends all the way out. Yes I think is hydraulic. But way would it do it when there is no power supplied?
Like I said, bad check valve letting fluid bleed past. Why would it do that with no power supplied?
Because there's still pressure in the line and it's getting past a check valve somehow without the valve being electrically actuated either at the hydraulic ram or the pump.
vmax is offline   Reply With Quote
Old 04-17-2018, 01:39 PM   #5
Senior Member
 
jtesta1's Avatar
 
Join Date: Jun 2015
Location: Valencia Pa
Posts: 602
Just go camping year round and you never have to put it in storage.
jtesta1 is offline   Reply With Quote
Old 04-17-2018, 01:48 PM   #6
Senior Member
 
cavie's Avatar
 
Join Date: Apr 2016
Location: Port Charlotte Fl/Hinsdale Ma
Posts: 4,237
following.
__________________
2011 Keystone Sprinter 323BHS
Port Charlotte Fl/Hinsdale Ma
Retired Master Electrician.

I know you believe that you understand what you think I said but I'm sure you realize that what you heard is not what I meant
cavie is offline   Reply With Quote
Old 04-17-2018, 06:48 PM   #7
Senior Member
 
Join Date: Jan 2018
Location: Raleigh, NC
Posts: 1,958
Here's how it works

Quote:
Originally Posted by Twabak View Post
It extends all the way out. Yes I think is hydraulic. But way would it do it when there is no power supplied?
It seems that you don't appreciate how a hydraulic system works. Here's a simplified description.

There's no direct drive to bring the slide in and out. That is, it's not like an electric garage door opener with a chain or a leadscrew (giant screw that rotates in a nut on the door to bring it up and down). These could get muddy and rusty under a trailer and fail to work.

Instead, the motor in a hydraulic system does nothing but pump fluid. The hydraulic fluid (a light oil, of the consistency of cooking oil) is pumped into a cylinder like a giant bicycle pump. This causes the piston to extend (like the handle of a bicycle pump going up) which pushes the slide out.

To bring the slide in, they could suck the fluid back out of the bicycle pump (it's really called a "hydraulic cylinder"), but instead, they just inject the fluid into the other end of the cylinder. Attached is a picture of a typical cylinder, although it probably has less travel than yours. You can see the two ports on the side. Fluid injected on the right port extends the piston (and fluid is allowed to exit the left port). Fluid injected in the left port (and allowed to exit the right port) contracts the piston. A hydraulic valve selects which end is filled by the pump and which empties back into the tank.

Now, back to your question. How could the slide come out by itself? First, suppose that the trailer isn't perfectly level. The slide is on the low side, so if there were no cylinders, it would slide out by itself like a dresser drawer if the dresser isn't level.

To prevent the slide from doing this, the hydraulic valve (see picture of manual valve--yours is probably electric) has THREE positions: Fill, Empty, and Neither. In the Neither position, fluid is not allowed to flow to/from either end of the cylinder.

What the other posters said (in a lot fewer words than this) is that in the Neither position, your valve is leaking a little, like a water faucet that won't completely shut off. There are really two possibilities.
  1. The valve could be letting fluid bypass, back into the tank/motor, or
  2. There could be a leak from one of the fluid plumbing connections. In this case there would be drips on the ground.
No power has to be supplied for either of these conditions to occur.

Hope that makes it clear.

Larry
Attached Images
  
Larry-NC is offline   Reply With Quote
Old 04-17-2018, 09:01 PM   #8
Senior Member
 
onetonford's Avatar
 
Join Date: Oct 2010
Location: TEMP for now
Posts: 1,042
3. There can also be bypassing going on inside the cylinder (bad or damaged packing) letting oil flow from one side of cylinder to other.
__________________

2001 Ford F-350 DRW 7.3
2011 25 RL Wildcat
former fiver 1976 Fourwinds had for 35 years
onetonford is offline   Reply With Quote
Old 04-17-2018, 09:05 PM   #9
Senior Member
 
Join Date: Jan 2018
Location: Raleigh, NC
Posts: 1,958
Yup!

Quote:
Originally Posted by onetonford View Post
3. There can also be bypassing going on inside the cylinder (bad or damaged packing) letting oil flow from one side of cylinder to other.
Yup! I completely overlooked that one.
Larry-NC is offline   Reply With Quote
Old 04-17-2018, 09:14 PM   #10
Senior Member
 
Join Date: Jun 2017
Location: British Columbia Canada
Posts: 332
Slide will not go in or out without power source unless camper is leaning in one direction. In this case if your slide is going out camper is leaning in that direction. Hydraulic system should hold it in place so you have a bad check valve somewhere. That simple. Or as above poster said bad packing.
__________________

cariboo camper is offline   Reply With Quote
Reply

Tags
slide, slide out, storage

Thread Tools
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



» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 04:36 PM.


×