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 > Electric Jacks Maintenance

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Backcountry Riders

Anoka, MN, USA

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Posted: 03/21/04 06:41pm Link  |  Print  |  Notify Moderator

Has anyone lubed, cleaned, performed any preventive or other maintenance on their electric jacks?

Henry

Jeff3161

Pasco,Washington

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Posted: 03/21/04 07:30pm Link  |  Print  |  Notify Moderator

No, the manual says to put a couple drops of oil (3 in 1)in the top where the handle crank goes there is a tiny hole. That is for the happy jack electrics.

Jothedog

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Posted: 03/22/04 08:48am Link  |  Print  |  Notify Moderator

I have Happijac 4500's on the front and 4100's on the rear. None of these has a lube hole in the crank handle hole. Anybody have these models and know where to lube? Also, how do you wax the insides of the jacks?


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Noel

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Posted: 03/22/04 07:27am Link  |  Print  |  Notify Moderator

Henry:

Do you have HappiJacs or ...........?


Noel

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Mack Daddy

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Posted: 03/22/04 09:42am Link  |  Print  |  Notify Moderator

I have Happijac 4500 (front) and 4100 (rrear) on my camper.

I had one jack start to bind and it would not fully extend under the weight of the camper. Luckily the camper was already on the truck, so I took it to the dealer. They added a teaspoon of motor oil, ran it through a few cycles, and the problem was resolved. I was told to do this once a year. To do so I have to remove the top cover to the jacks- there is no other hole that I can see which would allow for adding oil. Dealer told me that they used to remove the entire jack and send to the factory for service. Since then the Happijac factory told them that all they do is add oil, so the dealer does the same thing without all the hassle.

I was also told to wax the legs of the jacks once a year. I recently sprayed them with WD40 instead, but will be waxing them before the summer season.


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Posted: 03/22/04 08:07am Link  |  Print  |  Notify Moderator

My Happi-Jac owners manual says to run them through full travel a couple times a year to make sure the screw is lubed. Also says to wax the exterior surfaces with a good car wax. I suspect the wax may make the seals slide easier.


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Aktravler

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Posted: 03/22/04 10:38am Link  |  Print  |  Notify Moderator

That was wax the outside of the jacks, for protection from the elements just like you wax your rig.

One note on using WD40, it will attract dirt.

Never use it on door locks and things you want to repel dirt and grime. Use silicone.


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Noel

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Posted: 03/22/04 10:31am Link  |  Print  |  Notify Moderator

On our 4100/4500 jacks there are two 1/4 inch plastic inserts near the top of each leg. They are tough to get out (maybe a small slotted screwdriver) and they provide two holes to inspect the gears and squirt some oil or white lithium grease inside.

I'm a bit wary of removing the top/motor cover as I am a total loser at mechanics and there is a spring inside which may pop out and get lost or .........?

HappiJac technical service has always been helpful and friendly over the phone.

Robert Mitch

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Posted: 03/22/04 12:22pm Link  |  Print  |  Notify Moderator

There was a pretty good thread about this about 6 months ago. Every spring I take my top covers off (6 screws). You can take all the gears out and clean them easily. I re-grease all the gears and bushings. However, to lube the long screws you have to do as Noel pointed out above. I use two sharp chisels to remove the small plastic covers. I squirt 30 weight oil on the bevel gear and screw. You can look right in this hole and see in there. It usually makes a mess of oil on the leg pad but this can easily be wiped up. After doing this you may notice quite a difference in the noise level from them.
Robert Mitch


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dixieglider

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Posted: 03/22/04 01:01pm Link  |  Print  |  Notify Moderator

I've got Atwood electric jacks on my 96 Lance Camper. Anyone tell me how to service these. It's never been done. I have no info in owners manuel.
N4CKM

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