Hydraulic lift system Hydraulic, mechanical and electrical components of the lift system
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Old 11-21-2018, 04:27 PM   #1
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Default New hi-lo owner need help with top adjustment

Thanks for this group of knowledgeable owners, you have helped me so much just in reading your posts. Purchased a 99 26FB and have been working on it for several months. Almost finished and i went and left the microwave on top of the fridge and a bathroom cupboard door open (both back left side) and lowered the top. . Got it unjammed but now the back wall sits too high and the front wall too low (about 2 1/2 inches) tried to adjust the cables but they don't seem to make any improvement. when we bought it the front was already to low, back was good, now not so much
The cables look good, no fraying. Cant find any broken pulleys, but it is definitely out of wack, it goes up and down fine but makes a squeaking sound. the plate that the pulleys are on that rides on the bar underneath is crooked due to the adjustments i tried to make. the adjustment rod for the front is all the way out and the back ones are almost all the way in. we live in southern new mexico and there seems to not be anyone in the area that works on these things. i have checked everything i can think of including greasing the rod and oiling the pump shaft, any advise from y'all will be greatly appreciated
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Old 11-25-2018, 08:29 AM   #2
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Did you check to see if any of the cables had jumped off the pulleys?
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Old 11-25-2018, 05:17 PM   #3
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Yes I did, and also checked for any pulleys I may have broken. I can not find anything wrong. I took the trim off on the inside today and watched the rotation of the pulleys and cables from the inside as I had only watched from under the trailer and everything seems to be turning freely. Cables look good. I really am lost on this one.
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Old 11-26-2018, 08:34 AM   #4
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Are the glide blocks on the sides engaged in the vertical rails? If those aren't engaged it could cause binding. Grasping for possible problems here.
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Old 11-26-2018, 10:24 AM   #5
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Just a thought - check the underside edge of the top where the cables attach. You MAY find the cables have pulled into that surface "denting" it.

But, I like Rich's idea. Lowering the top on something inside that caused to top to stop lowering evenly could well have twisted the guide blocks off the rails, or even broken them.

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Old 11-26-2018, 11:47 AM   #6
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Guide blocks all on rails. I have waxed the rails. Will recheck the underside edge of the top just in case I missed something. Is it possible that I could have stretched the cables? Although the side that I jammed raises higher than the rest not lower.
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Old 11-27-2018, 08:56 AM   #7
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Your last post almost makes it seem the top was "torqued" when it was lowered, causing it to remain higher than the other side. But, if that were true, then the side that lifts higher would remain higher as the top was lowered and it possibly would not rest on the outrigger when it was fully down. Is any of this true? If so, the top would need some major work (so I hope it isn't).

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Old 11-27-2018, 01:30 PM   #8
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Have you checked to see if something isn't caught in between the top and bottom? That can cause that situation.
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Old 11-28-2018, 03:59 PM   #9
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Nothing caught between the top and bottom, but think I better take a closer look as to weather or not it is resting properly when it is down. Thanks for all the suggestions.
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Old 11-29-2018, 04:24 PM   #10
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Default Lift Cable Adjustment

IOf your top section sits evenly on the lid lowered position supports, you might try the normal cable adjustment procedure: cut enough 2x4s 24 inches long to set one on end at each of the down supports and then lower the lid down to the 2x4s. It will set level with the bottom of the rig. While letting the top sit on the 2x4s, check the cable adjustment point. It is located between the wheels on the driver side of the rig. If any of them are hanging loose, loosen the lock nut for the lose cables and then tighten the loose adjustment nut until you have snug fit. Re-tighten the lock nuts. Lift the top to the raised position and check for consistent fit all around the bottom/top interface. If that does not square away the issue, you almost certainly have a warped top that will require considerable work to fix. Hope that is NOT the case !!! I have had to adjust my lifting cables twice since I bought the rig new in 2010 (one of the last HiLos to come out of that plant). Good Luck

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