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Old 05-27-2019, 01:30 AM   #1
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Brand: Thor Motor Coach
Model: A.C.E. 27.2
State: Indiana
Posts: 647
THOR #14698
Question on hydraulic jacks

Hope I don't come across as too dense here, but I have a concern.
I had never had any type of leveling system on the Gulfstream B Touring Cruiser we had for the last 12 years, so I have zero experience with the leveler system. I was told at the dealership when I bought the ACE to always level first, then extend the slides so as to not stress the coach. Sounded logical. But I notice when I use the auto level the coach is level, checking with a two foot level, till I extend the slides then the coach goes out of bubble about an 1/8th, leaning to the slide side. I have been going back and tweaking the jacks to level out. Is this OK to do with the slides out? Or should I manually overcompensate by 1/8 bubble before I extend the slides?
Tx
Mark
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Old 05-27-2019, 01:47 AM   #2
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As long as the coach was level when the slide was extended you should be fine. I set my system to level the coach slightly high on the slide side so when extended it's within the lines on the level. You'll see a bunch of different opinions on this subject but this is how a Thor rep suggested I do it.
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Old 05-27-2019, 02:30 AM   #3
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Exactly level to operate your slide is not required, just be close. I generally manually level and put a tilt on the coach with the driver's side slightly low so Air Conditioning runoff heads that way instead of where we enter/leave the coach and live outdoors.
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Old 05-27-2019, 02:32 AM   #4
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You can always auto level; then manually raise the slide side about 0.3 degree before moving the slides. My two slides are on the left side. When I was on a nearly pad, I leveled the coach using the auto mode. I then raised the left 0.3 degrees and reset the auto level. It now is level with the slides out, unless we are on soft grass in a field.
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Old 05-27-2019, 03:27 PM   #5
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I like the bedroom side slightly higher so I manual level and achieve that, but could tweak the automatic

Advantage of manual level is the lower height
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Old 05-31-2019, 04:04 AM   #6
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Quick question, do the leveling jacks need to be lubricated periodically?
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Old 05-31-2019, 04:25 AM   #7
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Quote:
Originally Posted by longknocker View Post
Quick question, do the leveling jacks need to be lubricated periodically?
Depends...

If they are actual hydraulic cylinders, where a rod comes out (the ram), and they are not left extended more than 2 - 3 weeks at a time, then the answer is more than likely no.

If they are the cylinder type, and left extended for long periods of time, then yes, wipe the shafts with a rag wetted with ATF.
You do not want corrosion to set in, then cut a seal, then it all starts leaking.

Now, if it is a mechanical type, like a scissors type, then yes, even drain oil from a squirt can will suffice on the moving parts:
i.e. the screw, or gear drives, hinges, etc.
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Old 05-31-2019, 01:50 PM   #8
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Thanks
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