Happijac Blowing Fuses
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โDec-15-2016 08:53 AM
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Truck Campers
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โFeb-26-2019 03:14 PM
covered wagon wrote:
You have to cover the jack heads during storage and once a year oil the electric motor bearings each year.
The small hole at the bottom of the electric motor cover is to help removal with 25 lbs of compressed air with a rubber tip nozzle it slides right off.
With the covers off you can squirt oil in the very small oiling holes at the bottom of each motor. Use enough so that you fill up the bearing cup/ recess in metal housing in the middle bottom. Excess oil won't hurt but I wouldn't flood it.
After a couple years doing this you may find the plastic white cover is falling off on hot summer days so you'll have to add one automotive screw clamp to each cover and tighten down.
Your motor bearing is frozen creating too much load on the electric system. Might need to replace the bad motor.
Also the fuse sizes are too big to provide any real protection to the circuit board.
Covered Wagon to the rescue!
Bumping this thread as it is about the only place online that had this information. Compressed air worked like a charm and motor housing underneath was soaked. I backed out the two screws on the bottom and a bunch more water came out. 2018 northern lite, so the jacks are basically new. Needless to say, I'm not impressed with happijac's weather sealing.
In other news, I can't figure out where to put the oil. Also, I have gear oil (like for oil bath hubs), 30hd, and 10w-30 at home. Is a trip to the auto parts store in my future?
Thank you!
2018 Northern Lite 9-6 SE
Upper StableLoads (for now)
Nokian LT2 Studs
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โDec-15-2016 03:38 PM
deminimis wrote:
Done/fixed. Popped cap off (after melting ice inside). Blew dry. Wd40. Blew that out and dribbled 20wt in there as best I could. Will do a more thoughtful job when not so far below freezing. For those that have toron into these, I assume, based on end housing shape, that it actually has sintered bronze bushings and not bearings. Is that correct? If so, 20wt (3 in 1) is ideal. Just went through this with a pellet stove blower. Thanks. Oh, a couple of wraps with a screwdriver handle in the bushing location freed the motor.
Watch the lube job on top of the screw jacks (under the gear head)... in the manual position you disengage the electric motor and the clutch can be lubed too much to hold and the jack will let the camper come down. Very dangerous.
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โDec-15-2016 03:15 PM
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โDec-15-2016 02:28 PM
1999 Bigfoot 1011
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โDec-15-2016 12:25 PM
The small hole at the bottom of the electric motor cover is to help removal with 25 lbs of compressed air with a rubber tip nozzle it slides right off.
With the covers off you can squirt oil in the very small oiling holes at the bottom of each motor. Use enough so that you fill up the bearing cup/ recess in metal housing in the middle bottom. Excess oil won't hurt but I wouldn't flood it.
After a couple years doing this you may find the plastic white cover is falling off on hot summer days so you'll have to add one automotive screw clamp to each cover and tighten down.
Your motor bearing is frozen creating too much load on the electric system. Might need to replace the bad motor.
Also the fuse sizes are too big to provide any real protection to the circuit board.
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โDec-15-2016 11:20 AM
http://forums.woodalls.com/index.cfm/fuseaction/thread/tid/28681926/print/true.cfm
2020 Grand Design Solitude 2930RL 2520 watts solar. 600ah lithium. Magnum 4000 watt inverter.
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โDec-15-2016 10:57 AM
2020 Grand Design Solitude 2930RL 2520 watts solar. 600ah lithium. Magnum 4000 watt inverter.
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โDec-15-2016 10:27 AM
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โDec-15-2016 09:53 AM
If it's smooth with the hand crank, take the motor head off and see how easily the spur gear turns.
'12 Eagle Cap 1160, 800watts solar, Tristar MPPT, Magnum Hybrid 3k Inverter
'15 Wells Cargo 24' Race Trailer, 600 watts Solar, TriStar MPPT, Xantrex 2kw inverter
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โDec-15-2016 09:50 AM
2020 Grand Design Solitude 2930RL 2520 watts solar. 600ah lithium. Magnum 4000 watt inverter.
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โDec-15-2016 09:16 AM
I would try isolating to the jack or not. That is, unplug the jack and see if the fuse still blows. Then, I'd take it apart and clean it or hit it with WD 40 or other water displacing spray.
If you can get to the control, you could also try bipassing the wire to the jack to see if the wiring to the jack might bad. You could also do that by moving the jack to a different position. There would only be a few bolts to take loose to move it.
'10 Ford F-450, 6.4, 4.30, 4x4, 14,500 GVWR, '06 Host Rainer 950 DS, Torklift Talon tiedowns, Glow Steps, and Fastguns. Bilstein 4600s, Firestone Bags, Toyo M655 Gs, Curt front hitch, Energy Suspension bump stops.
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