How to Convert Manual HappiJac Model 4160 Jacks to Electric

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Question:

I recently purchased a 2018 camper with manual Happijacs. The rear jacs are both 4160 series and the front ones are both different, one a 4820 and the other a 4220. I would like to convert to electric jacs. do you have the kit that would work?

asked by: Larry

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Expert Reply:

Congrats on the new camper! I have a solution but there unfortunately is not a manual to electric conversion kit for the HappiJac 4160 series jacks. The reason an electric conversion will not work for your 4160 is that they have a two piece construction acme screw drive, and the roll pins that connect the acme screw to the upper assembly can shear with the clutch less motors. The Manual-to-Electric Conversion Kit for HappiJac Truck Camper Jack Systems item # LC733960-182524 will work for the 4220 and 4820 jacks but not the 4160s.

You are going to need to upgrade your jacks to the HappiJac Electric Truck Camper Jack System item # LC736514-ELKIT. This system is going to be the correct replacement upgrade that uses the new clutch-less motors. It has an overall weight capacity of 8,000 lbs, or 2,200 lbs per jack, and has a maximum lift of 34-1/2".

expert reply by: Jerred H

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Answer 1

Hey Michael, if you check out the attached picture you can see all of the individual components that come with the HappiJac Electric Truck Camper Jack System #LC736515-ELKIT that you referenced. Everything you'd need would come with this as it…

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Answer 2

It looks like the HappiJac 4100 series jacks had 34.5" of travel, and there are some parts available to replace things in a pinch, but with newer trucks getting taller it might be wise to upgrade to a whole new set of jacks. I recommend taking a…

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Answer 3

What jacks do you have installed on your 1999 Lance 845 truck camper? If it's an older model then the only solution I know of is to completely replace the jack system itself with part #LC736514-ELKIT for a 34-1/2" lift or part…

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Answer 4

There are camper jacks that will allow you to take your camper off your truck bed easily, but there is nothing with wheels as that would not be stable enough so they do need to remain stationary. To choose the right camper jacks, you need to know the…

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Answer 5

Hey Simon, thanks for reaching out! I spoke with my contact at Lippert (who owns HappiJac) and they said there aren't any rebuild kits available so you'll have to get a whole new jack as part #LC736514. You can still look and see if someone…

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Answer 6

I recommend using the Swing Out Extension Brackets for HappiJac Truck Camper Jack Systems item #LC182496 and the HappiJac Fixed Extender Bracket for Dual Wheel Chassis Truck Camper Jacks item #HJ54FR. The fixed extenders are only 5" wide apiece.…

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Answer 7

If you're looking for just the L-bracket for your HappiJac Electric Truck Camper Jack System #LC736514-ELKIT then you'll need part #LC182492. The flat bracket can be swapped out with part #LC182494 and the swing brackets can be replaced with…

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Answer 8

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 9

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 10

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 11

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 12

Hey Jonathon thank you so much for all of that additional information! To haul your bikes behind your class C Sprinter motorhome, while flat towing your Mini, I recommend the Hollywood Racks RV Rider Bike Rack item #HLY64FR and the Roadmaster Dual…

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How to Convert Manual HappiJac Model 4160 Jacks to Electric

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