Forum Discussion

laudy's avatar
laudy
Explorer
May 16, 2016

another my landing gear blows fuses thread

ok I will try not to get too long with this. given the fact the gear is all the way in (retracted) and rv is hooked on the truck (reg f250 diesel no lift kit). I lower the gear approx 8-10". (I need this much out so I can lower it into level position after unhooking) After I have 8-10" out I then pull the pins on the retracted feet and drop onto wood 4x4. I then start extending the landing gear and just before it extends far enough to drive out the fuse blows. I have had this unit and truck and have not modified anything. Here is what I have tried and has not corrected the problem. Replaced switch. Replaced venture gear box. Checked all connections for tightness. Tried to operate on battery only and also while hooked up to shore power. While the unit was hooked to truck I ran the legs all the way out by hand cranking so I could feel the stops then lubricated everything with grease and silicone. Couldnt feel any bind while hand cranking but it sounds like it is laboring hard just before i get it off the truck. Same happens when I extend and try to hook truck up. So tonight Iam replacing the motor and reducer. Iam out of ideas and money after this hope it works.
  • korbe's avatar
    korbe
    Explorer
    May 16, 2016
    Two ideas. One, could a leg be bent that stresses the motor? Or two, could your landing gear motor also be trying to lift the truck hitch and not free to lift clear?
  • laknox's avatar
    laknox
    Nomad
    May 16, 2016
    korbe wrote:
    Two ideas. One, could a leg be bent that stresses the motor? Or two, could your landing gear motor also be trying to lift the truck hitch and not free to lift clear?


    Another thought, could the gear be hitting the end of travel on the extension stroke? I know it's not likely, just throwing it out.

    Lyle
  • fj12ryder's avatar
    fj12ryder
    Explorer III
    May 16, 2016
    "Another thought, could the gear be hitting the end of travel on the extension stroke? I know it's not likely, just throwing it out."

    Yeah, I was wondering the same thing. 8-10 inches is a long way to extend the legs before dropping the inner legs and starting to raise the trailer.

    How big and how old is the trailer/fifth wheel?
  • echobot's avatar
    echobot
    Explorer
    May 16, 2016
    My problem was a defective circuit breaker. Went to the auto store and bought a new one and the problem has never returned.

    Hope this helps.
  • bpounds's avatar
    bpounds
    Nomad
    May 17, 2016
    You said you lubricated. Did that include the leadscrews and follower nuts inside the leg? On mine you can't get to those without disassembling the legs, or as I did, drill small holes in the upper housing. I use chain and cable lube in a spray can. It is very clingy stuff. Now I can insert the spray can tube through the hole and really lube up those leadscrews.

    Lube those screws, and then run them in and out a few times, with no weight on the legs.

    Then, while you're working on it, get yourself a self-resetting breaker to replace the fuse. On most, 30A is the correct rating. Cheap at Amazon.
  • laudy's avatar
    laudy
    Explorer
    May 17, 2016
    Well picked up a new motor. That seems to do the trick. Ran the landing gear up and down as if I was simulating hooking and unhooking and leveling. Never popped the fuse. The motor never sounded like it was laboring at the tail end of the lift like the old motor did. Hope this was the answer.
  • laudy's avatar
    laudy
    Explorer
    May 17, 2016
    bpounds wrote:
    You said you lubricated. Did that include the leadscrews and follower nuts inside the leg? On mine you can't get to those without disassembling the legs, or as I did, drill small holes in the upper housing. I use chain and cable lube in a spray can. It is very clingy stuff. Now I can insert the spray can tube through the hole and really lube up those leadscrews.

    Lube those screws, and then run them in and out a few times, with no weight on the legs.

    Then, while you're working on it, get yourself a self-resetting breaker to replace the fuse. On most, 30A is the correct rating. Cheap at Amazon.


    yes I did lube the leadscrews and ran them up and down with no weight on them. See following post from me. I think i fixed it.
  • laknox's avatar
    laknox
    Nomad
    May 17, 2016
    laudy wrote:
    Well picked up a new motor. That seems to do the trick. Ran the landing gear up and down as if I was simulating hooking and unhooking and leveling. Never popped the fuse. The motor never sounded like it was laboring at the tail end of the lift like the old motor did. Hope this was the answer.


    One of the real no-no's with electric landing gear is to be sure NOT to run them to the stops on either end. That's when you really start breaking stuff, like shear pins, and stripping gears.

    Lyle
  • cummins2014's avatar
    cummins2014
    Explorer
    May 17, 2016
    laudy wrote:
    bpounds wrote:
    You said you lubricated. Did that include the leadscrews and follower nuts inside the leg? On mine you can't get to those without disassembling the legs, or as I did, drill small holes in the upper housing. I use chain and cable lube in a spray can. It is very clingy stuff. Now I can insert the spray can tube through the hole and really lube up those leadscrews.

    Lube those screws, and then run them in and out a few times, with no weight on the legs.

    Then, while you're working on it, get yourself a self-resetting breaker to replace the fuse. On most, 30A is the correct rating. Cheap at Amazon.


    yes I did lube the leadscrews and ran them up and down with no weight on them. See following post from me. I think i fixed it.



    I assume you tried a different style fuse . It has worked for some without issue. No burned up motor or wiring. won't go into detail ,seeing that you already went the new motor route .

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