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Old 09-04-2013, 07:59 PM   #15
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Originally Posted by GaryKD View Post
Hi Larry2013,
If the jacks are HWH the suggestion to replace the springs is valid. If the springs are straight down to the hook they need to be replaced. If the spring part is tapered the last five turns in to hook part, they are the new model and do not need to be replaced. Also, spraying may help temporarily. Some HWH jacks have a lower seal that will, over time, collapse in on the cylinder. This keeps the jack from retracting all the way. The only remedy is to rebuild or replace the jack.
We have the old, straight springs and they are still doing just fine after 11 years. I've never even had to lube the rams.

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Old 09-04-2013, 08:19 PM   #16
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I have one that won't retract, use to use a board to knock it up, then someone on this forum said I could just drive off of it. Much easier, till I can get it working correctly. Will try cleaning.

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Old 09-04-2013, 10:15 PM   #17
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Slow retracting HWH levelers

The front passenger leveling jack has always be slow. I did replace all of the springs to the new type which did help but front passenger jack was still slow. It was necessary to use a old wooden handle type army folding shovel as a pry bar to assist the jack. My HWH manuals said lubrication of the jacks was not recommended. Therefore I was reluctant to use any on the jacks other than wiping them down.

Later I tried WD40 but it did not help and I did not like the idea of using transmission oil because of the oily residue.

Today I grabbed a spray can of Dupont Silicon and Telfon spray. I sprayed the slow jack and wiped in down. After the jack was sprayed it OPERATED NORMALLY. I sprayed all of the other jacks and they all retract faster.

I threw some fine sandy dirt on the sprayed shaft and the Dupont spray does not seem to attract dirt like oils would.

I was pleasenty suprised with the results and have added the spray to my maintenance items.

2005 KSDP ISC 8.3 330HP
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Old 09-05-2013, 05:34 AM   #18
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Another vote for WD-40 I use it on our coach about every 3 months, spray the springs while you are at it

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