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Old 06-18-2012, 01:31 PM   #1
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slide out question

On our 2011 378, there is a persistant loud rattle near the front of the right slideout. In looking under the slide, I notice the two hydraulic rams have a considerable amount of play between the adjusting bolts. ( 3 or 4 inches) On ours there are 2 nuts on the inside of the attachment bracket and and one nut on the outside end. I wonder if these should be tight against the retaining bracket when the slide is in.

As it is now, the front hydraulic rod is loose when the slide is in, and rattles when I shake it. I suspect this is the noise I hear.

Have any other 378 owners noticed this? Should these be tight on the bracket?
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Old 06-18-2012, 02:46 PM   #2
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On my 370 there is a small gap less than an inch. I too hear a little rattle when closing it. I would think there would always be some play. I'm sure some 378 owners will tune in with their findings. it will interesting to see how many different answers you get.
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Old 06-18-2012, 02:52 PM   #3
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Quote:
Originally Posted by ohiobill View Post
On our 2011 378, there is a persistant loud rattle near the front of the right slideout. In looking under the slide, I notice the two hydraulic rams have a considerable amount of play between the adjusting bolts. ( 3 or 4 inches) On ours there are 2 nuts on the inside of the attachment bracket and and one nut on the outside end. I wonder if these should be tight against the retaining bracket when the slide is in.

As it is now, the front hydraulic rod is loose when the slide is in, and rattles when I shake it. I suspect this is the noise I hear.

Have any other 378 owners noticed this? Should these be tight on the bracket?

That is normal. See attached document and page 9 and 10 for pictures and how to adjust if needed.
Attached Files
File Type: pdf Lippert_Hydraulic_Slideout-Info.pdf (846.4 KB, 117 views)
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Old 06-18-2012, 04:13 PM   #4
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Your attached files are corupted and will not open
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Old 06-18-2012, 04:54 PM   #5
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Your attached files are corupted and will not open
Hi George
I just opened it and can read it. It is in Acrobat format and you must have Acrobat Reader to open it.
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Old 06-18-2012, 05:17 PM   #6
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I also opened it. It works.
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Old 06-18-2012, 06:01 PM   #7
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I have Acrobat and is up to date version, I tried in two different browsers and the same result
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Old 06-18-2012, 06:02 PM   #8
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Try deleting your temporary files and reboot.
That might help.
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Old 06-18-2012, 06:36 PM   #9
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Quote:
Originally Posted by ohiobill View Post
On our 2011 378, there is a persistant loud rattle near the front of the right slideout. In looking under the slide, I notice the two hydraulic rams have a considerable amount of play between the adjusting bolts. ( 3 or 4 inches) On ours there are 2 nuts on the inside of the attachment bracket and and one nut on the outside end. I wonder if these should be tight against the retaining bracket when the slide is in.

As it is now, the front hydraulic rod is loose when the slide is in, and rattles when I shake it. I suspect this is the noise I hear.

Have any other 378 owners noticed this? Should these be tight on the bracket?
I also have 378 but I think any Lippert or hydrau slide is similar. The reason for the "lost motion" of the rams or slack is to allow the pump to come to speed before real work must be done. As you push the button the pump starts, the room solonoid opens and the pump directs fluid to the correct side of the piston. By having the rod with a few inches of free motion, it does not force the pump to overcome a "dead head". Without it, the motor may stall and cause the breaker to open. It also allows for a minor misalignment in the length of the slide when extending or retracting.
If a room is loose the length of the rods are not adjusted properly but the lost motion must be as original. Mine are also 3" slack.
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Old 06-18-2012, 10:26 PM   #10
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From looking at the Lippert documentation, it appears the adjustment on mine is correct. The ram seems to work out about 1/2" while traveling. The rear ram remains tight, so the slide stays put, but the front one can rattle enough to be annoying on concrete highways. If I push the Slide in button it tightens up, for awhile.
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