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JimK-NY

NY

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Posted: 09/02/20 07:48am Link  |  Quote  |  Print  |  Notify Moderator

If you do need to replace a motor be sure to get the new style. The motor is vertical and under a solid cover. The old style motor depended on a seal to keep water out. When I looked at the two motors of mine that failed, there was corrosion and some water in the canisters due to failure of the seals.

TxGearhead

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Posted: 09/30/20 03:30pm Link  |  Quote  |  Print  |  Notify Moderator

Just discovered my Happijac issue this afternoon. Mine are ratcheting like they are overloaded. I got the 2 rear jacks to work, I think. The fronts are 4500's. All are 2008 vintage with vertical motors. I used a 1/2" allen socket on a 1/2" drive ratchet and couldn't move them manually. Lever was in down position. So I cribbed up under the camper and used a car floor jack to lift one front jack off the ground. It still won't turn manually or engaged to the motor. The motor spins fine with the jack disengaged. Even tried a cheater bar a little bit. I took the motor covers off and all looks well. Still has a good bit of my white lithium grease on the gears.
The camper is under a Classic Accessories cover when not used. I keep small plastic buckets over the front jacks. Camper has not been used for over a year.
I thought there was a thread on here about rebuilding the jacks. Can anyone point me in the right direction?
Thanks in advance.
Moderator if you want to start a new thread, go for it.


2018 Ram 3500 CC LB DRW 4X4 Cummins Aisin Laramie Pearl White
2018 Landmark Oshkosh
2008 Bigfoot 25C9.4
2014 NauticStar 21 ShallowBay 150HP Yamaha
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54suds

adk mts.

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Posted: 09/30/20 05:11pm Link  |  Quote  |  Print  |  Notify Moderator

heres 1

* This post was edited 09/30/20 05:30pm by 54suds *


2020 Chev 6.6 (GAS) lt regular cab ,drw,4x/torklift tdn's,
1999 Bigfoot 1011

Grit dog

Black Diamond, WA

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Posted: 09/30/20 05:43pm Link  |  Quote  |  Print  |  Notify Moderator

There is a thread on taking apart the jacks. It is helpful as you need to fab a little hook to disassemble and it's super easy with the instructions.
Just because you see grease on top on the gears means nothing. That's not where they corrode first. it's the big screw in the leg that gets crusty first in my experience.
The ratcheting could be due to the above, or if only 1 front jack ratcheting, on mine, the camper is a bit twisted and actually overloading 1 jack. Some adjustment in height between the jacks gets everything working again.
Hope this helps.


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

54suds

adk mts.

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Posted: 09/30/20 06:09pm Link  |  Quote  |  Print  |  Notify Moderator

go to july 2010 will show hj cut apart link

TxGearhead

Texas

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Posted: 09/30/20 06:14pm Link  |  Quote  |  Print  |  Notify Moderator

I've got it broke down to the last gear. It's being stubborn so I have it soaking in Kano Kroil. Go at it again tomorrow.

7.3driver

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Posted: 09/30/20 07:53pm Link  |  Quote  |  Print  |  Notify Moderator

http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/22881036.cfm

I bought a 2000 Bigfoot 25c10.6 a couple of months ago and had to replace 2 of the complete assemblies (motor and jacks) and the other two electric motors. Had to take those two jacks apart, clean and lube the threaded rods, made a big difference (was binding). The link above helped me.

TxGearhead

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Posted: 10/01/20 05:58am Link  |  Quote  |  Print  |  Notify Moderator


Wants to sign in to google photos.

TxGearhead

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Posted: 10/01/20 06:07am Link  |  Quote  |  Print  |  Notify Moderator

7.3driver wrote:

http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/22881036.cfm

I bought a 2000 Bigfoot 25c10.6 a couple of months ago and had to replace 2 of the complete assemblies (motor and jacks) and the other two electric motors. Had to take those two jacks apart, clean and lube the threaded rods, made a big difference (was binding). The link above helped me.


Yes! That is the thread I was looking for.
Thanks!

TxGearhead

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Posted: 10/01/20 01:29pm Link  |  Quote  |  Print  |  Notify Moderator

8# sledge hammer work all morning. I soaked the tubes upside down overnight with Kroil. Beat on the foot all morning trying to separate them. At first maybe 1/8" per whack. Then it got better and better. Actually bent the foot and cracked at least one weld. But I got them separated. Lots of dirt and excretement. Collateral damage was the little white plastic tab opposite the disengage lever. I watched a youtube of a guy taking the tubes apart and he attacked the little tab with a screwdriver and a hammer. So I did too. Should have known better, he didn't know a circlip from a cotter pin. Also the o ring came out in 2 pieces.
I might pour some CLR in the upper tube and see if it cleans up.
I'm turning the acme rod and soaking it in penetrating oil to clean it up. It seemed surprisingly clean.
Sent an email to Happijac requesting parts.
Will take the other front jack off and at least start soaking it.

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