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Old 07-27-2013, 11:59 AM   #1
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HWH Actuator oil leak.

Hello All,
I have issues with an oil leak at the kick down actuator. I have verified this by cleaning the jack and watched the oil trail start at the top of the actuator and end up puddling at the foot. Also, I have exercised the jack(s) and still a slow & steady leak.
The question is, can the oil seal be replaced and how hard would it be to do this? I have searched for seals for HWH Actuator RAP0448 that is used on RAP7164(6000# kick down jack).
Any help is appreciated
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Old 07-28-2013, 03:51 PM   #2
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HWH Jacks

Quote:
Originally Posted by Bulldog74 View Post
Hello All,
I have issues with an oil leak at the kick down actuator. I have verified this by cleaning the jack and watched the oil trail start at the top of the actuator and end up puddling at the foot. Also, I have exercised the jack(s) and still a slow & steady leak.
The question is, can the oil seal be replaced and how hard would it be to do this? I have searched for seals for HWH Actuator RAP0448 that is used on RAP7164(6000# kick down jack).
Any help is appreciated
I replace both rear jacks because of not retracting-you have a hyd fitting on top of jack and your jack up sensor with an oring is next to it-either one can be leaking-5/8 wrench to tighten hyd line-try to use a extended mirror with a light on it(sold at Home depot) and wipe the top clear-than with jack down see if a leak is forming
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Old 07-28-2013, 04:04 PM   #3
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Is the leak coming from a fitting or a weld on the jack? I had a jack rebuilt by HWH & after I installed it, it was leaking at the weld around the top of the jack cylinder. It was tough to 'pin' point since that's about the size of the hole.
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Old 07-28-2013, 04:11 PM   #4
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If your drive in winter with salty roads the jackets will rust out eventually and oil will seep out thru the jack casing.
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Old 07-30-2013, 11:02 AM   #5
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HWH Actuator oil Leak

So, the saga continues.... Please excuse the long writing.
I had exercised the jacks after cleaning with WD40 and q-tips per the HWH maint. Found oil to be low in the hyd tank added more fluid after storing the jacks (with exception to the problem right front would not retract). Restarted the hyd sys and the right front was leaking bad, tried tightening the 5/8' bolt at the top of the hyd actuator and it broke free and shot like a built (of course it was under pressure).
At this point I have ordered a replacement actuator RAP0448, also pulled the jack. Then pulled the actuator off and found 2 O-rings(front and back) where the bolt goes thru. This bolt has a port hole going thru it, I assuming to allow hyd fluid to pass thru the main hyd ram.
So, one question is does this bolt with the port in it have to be in-line with the actuator ram(piston)? I will try and talk with HWH and see what the have to say.
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Old 08-21-2013, 11:44 AM   #6
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Thumbs up HWH Leak

After a backyard mechanic (my own) education I have success on the jack oil leak. I pulled the jack from the MH, found an imperfection on the mating surface between the main jack and kick-down jack. Someone in the past must have gouged the face of the main jack. I did replace the kick-down jack, the original showed signs of deterioration. Hyd system refilled and no leaks.
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