bigfootford
Fair Oaks, California
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Joined: 12/03/2002
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Deleted post..
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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d3500ram
Colorado
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Joined: 07/31/2006
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Update to my adventures... ended up being able to salvage the jack but what a pain in the buttuchis.
I sprayed a whole bunch of penetrating oil in side the bottom of the jack tubes and let it set overnight. On Sunday, I again tried tapping out the inner tube. it was still very tough but made more progress to where I could remove it.
It seems that a lot of rust particles and debris built up inside and it was this restriction that caused my problems not he internals themselves as described in the OP's posting. I did go through the whole procedure as illustrated, but it was the physical binding of stuff between the tubes causing my restriction.
My advice to folks doing this maintenance is to first try to identify the problem and if it is anything like I describe, then spray penetrating oil prior to any disassembly. I was able to salvage my jack and with a little touch-up paint, it looks pretty good and operates like new.
Oh, another thing- be sure of where all the parts go- I ended up needing to disassemble again because I did not install one bushing in the right order.
Also- in attempting to dislodge the lower jack tube I used a brass drift and a hammer at the top rod. Even though brass is soft, the steel rod at the top by the gears in relatively soft too. I knurled part of it over to the point where i could not install the plastic square pieces back on. I had to take it all apart again to get a file on that square top of the steel rod. I feel as if now I could do maintenance on the other 3 without instructions...LOL
Folks- not that hard of a job if there are no out of the ordinary difficulties like I experienced.
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bigfootford
Fair Oaks, California
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Joined: 12/03/2002
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Way to go d3500ram!
Run that rod in and out with an electric drill... PB blaster to clean the rust and then grease...
I use boat trailer grease BTW.
Good job!
Oh, you going to have the inside tube powder coated?
Jt
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d3500ram
Colorado
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Joined: 07/31/2006
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I did not need to run the rod all that much... it was in great shape and not dry or rusted at all- I did wipe it down and apply axle bearing grease.
Not going to powder coat the inside although I am sure that would have helped in not having all that crud build up on the inside. I need to just make sure to (as the mfgr states) to fully extend and retract the jacks at least once a year to distribute the grease inside and as well to keep an eye on the general condition of the jacks.
I am just very surprised at how quick the rust build up cause a total failure of the operation- I sensed it last year and noted to myself that I need to give some lovin' to the jacks and the only time I needed to raise the camper this year it would not work!
Glad I got it working without needing to buy new.
(edited by me for speeling corecshun.)
* This post was
edited 06/26/17 01:11pm by d3500ram *
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bigfootford
Fair Oaks, California
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Joined: 12/03/2002
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Looking at the wear on your inside tube It got me wondering if your jacks are not straight/perpendicular to the ground.
If the jack bracket causes the jack to tilt slightly in, out or left right, then when the jack is lowered it will start binding and put lots of force on the nylon shims at the bottom of the outer tube.... It will cause the inner tube to destroy the powder coating and lead to rust...
I have 1 jack bracket that is slightly misaligned... It is 1/8" steel and formed to the body of the bigfoot... I ended up shimming the jack enough to make it perpendicular as close as I could get it. You could really hear the motors labor to raise the camper because of that binding... Lowering was not too bad. This is not a HJ problem the brackets are made for Bigfoot.
Glad you have a great conclusion to your issue.
Jim
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Old Islander
British Columbia
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Joined: 06/06/2017
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stevenal wrote:Old Islander wrote:BTW, HappiJac sent me a package of 13 PDF's with a good deal of information about these jacks (exploded diagrams, etc). They total about 10 megs. If anyone can suggest a public place to upload them so they're available to all, I'd be happy to do that.
I use http://files.engineering.com/upload.aspx. Not sure what the size limit is.
I just found your reply... Tried to upload to this site, but for some reason it wouldn't let me. Here are the 13 files in the 10 meg zip file:
- 45 series parts breakdown.pdf
- 4800 field manint lowres 150.pdf
- 4150 4160 diagrams partlist.pdf
- 4500 4600 differenc.pdf
- cam install.pdf
- clutch adjustment.pdf
- comm cable conigurations.pdf
- jack dimensions.pdf
- new jack motor.pdf
- outer jack tube removal.pdf
- triflow1.png
- upperassemblypdf.pdf
- usingjacks.pdf
The clutch adjustment for the 4150 series jacks was very helpful. I had one that was constantly slipping/chattering while under medium load. The adjustment seems to have fixed that...
If anyone knows a public site to upload them to, let me know.
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zulu52
Cypress, Texas
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Joined: 04/14/2015
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This thread has lost its pictures also. This is truly a travesty.
Luckily, a few months back, I found this thread so valuable that I printed out the entire thread so I at least have the pictures.
Zulu
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bigfootford
Fair Oaks, California
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Joined: 12/03/2002
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I have deleted my post... I would like to see what KKELLER has to say first. My Bucket pictures are still in posts I have made... Sleepy's are still there too... All 10,000,000,000 of them...
Jim
* This post was
edited 07/10/17 02:12pm by bigfootford *
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d3500ram
Colorado
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Joined: 07/31/2006
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I too saved the OP's first post with pictures in .doc, docx and PDF format for when I did the repair.
...if anyone wants a copy PM me with an e-mail address and I can forward a copy.
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Old Islander
British Columbia
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Don't know how this will work -- it's Happijac's series of photos on how to dismantle the 4150 series jack. It's not as good as the OP's photos; now all gone, thanks to Photobucket... Hopefully if you click the photo, you'll see the full size page.
![[image]](http://i.imgur.com/3AnI2yWl.png )
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![[image]](http://i.imgur.com/3AnI2yW.png )
