DesertDave100
San Jose CA
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Joined: 02/12/2007
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A couple things I saw that are different from the comments on this post.
My screw sections are lubricated with oil. Oil would get there from the hole in the socket. It wouldn't lube the grease pocket or other failure points, but it would lube the acme screw.
There was a large o-ring between the square plate and the round piece that contains the needle bearing. On my jack it had broken up, and I think that was the cause of the vibration that caused me to tear into it in the first place. I've viewed several postings/blogs/photo links on Happijacs, and I've never seen this mentioned.
2014 Four Wheel Grandby. Rides on a 2007 Ford F350 6.0 SRW Torqshift
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KKELLER14K
BEAVERTON OREGON
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Again, oiling the socket with 3 in 1 only lubricates the socket itself and nothing else...Their suggestion on maintenance is misleading and is why I think a lot more people have jacks that go south from lack of lubrication. I have been told that the top plate eventually drys out and this is why it binds up. I also have heard that the bearing can go bad....I'm surprised that they wont sell the parts...again I haven't had anything break but I believe the binding I was experiencing was because that plate was not lubed very well.
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KKELLER14K
BEAVERTON OREGON
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Wow I can't believe that Quail48!......True that the only thing that holds the whole thing together is that pin...but if that pin sheard off, the leg would just fall out...I wonder if yours is a different type, or should I ask how is it staying up in the tube???.
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quail48
on truck
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Joined: 06/21/2009
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Thank U much for H-jac info.... I think I have a sheared pin as I can step on the foot & get instant full extension... WOW ! ! ! They want $47. + shp'g to rpr... Will not sell parts ! ! Liability ! ! ! ? ? Bob
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bigfootford
Fair Oaks, California
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Joined: 12/03/2002
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Tizi wrote:oldwanderer wrote:Great job on both the explanation and the pics, THANKS. Just printed off a hard copy of your report and will put it in my manuals binder just in case. I was wondering what type of lube hapijac recommends to use ? I can't tell from pics other than it appears to be a white grease but is it a extreme pressure type or synthetic or ?
Their website says 3 in 1 oil, and nothing about grease from what I read. Are they saying the original grease should last forever?
Apparently the MFG does think that the grease should last forever.....
My front jacks got noisy and started binding the 2nd year. Oh man was I PiXXed. I have serviced them twice....
Jim
2000 2500 9.6 Bigfoot,94 F250, Vision 19.5, Mich 245/70XDS2's, Bilstein shocks, air bags/pump, EU2000, PD 9260,Lifeline 100ah, 200W. solar, Morningstar Sunsaver 15A/ display panel, Trimetric, Delorme/laptop, Holux gps rec,led lights, Wave-3 heat.
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bigfootford
Fair Oaks, California
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KKELLER14K, great writeup. About 6 years ago a fella did a write up and linked it to his website.....Dang if the Jack police didn't run him out of town!!!!!!
I've been servicing my jacks in the exact way you did for several years after reviewing and printing out the fellas write up.
Some guys use the blue, water resistant trailer bearing grease. I use the regular Lithium type.
The dis assembly process is a little different for the older non-drop down jacks..
Jim
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Tizi
Normandy Park, WA
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oldwanderer wrote:Great job on both the explanation and the pics, THANKS. Just printed off a hard copy of your report and will put it in my manuals binder just in case. I was wondering what type of lube hapijac recommends to use ? I can't tell from pics other than it appears to be a white grease but is it a extreme pressure type or synthetic or ?
Their website says 3 in 1 oil, and nothing about grease from what I read. Are they saying the original grease should last forever?
2008 Dodge Ram 2500 QC 4x4 - HEMI
2007 Northern Lite 10.2 RR
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FarcticOx
NH or somewhere else
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Joined: 03/25/2007
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KKELLER14K,
Thanks for a great post. My jacks are still working well but getting a little noisy and I was planning on investigating such a repair/relube this summer. You've made the task much easier.
Does anybody know if Happijac will sell replacement parts if they are needed?
FarcticOx
Run Silent, Run Deep
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2003 F350 Diesel DRW.
2005 Arctic Fox B1150 solar powered dry camper.
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serpa4
East Coast
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The worm is like 4 feet long. A zerk wouldn't get lube up and down the entire gear. Taking them apart really is pretty simple to do every couple years. I did over kill on the worm gear lube, put a ton on it.
Love the camping life. 06 Host Rainier SS, 07 Classic GMC Sierra 3500 DRW.
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KKELLER14K
BEAVERTON OREGON
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Not sure of the lube type. I just used a little from where the top gears were.
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