Umarex dual powered MP5 gearbox not working

Discussion in 'Gun Building, Modifications & Repairs' started by brokenarrow, Oct 6, 2012.

  1. brokenarrow

    brokenarrow Active Member

    5,862
    19
    Meadville
    I'm working on a Umarex spring/electric MP5 and when I pull the trigger on electric the gun does nothing and the motor just spins. WHAT IS THE PROBLEM, I need help NOW!!
     
  2. ShooterMcgavin

    ShooterMcgavin New Member

    650
    0
    New Port News
    Adjust motor height? Google this if you do not know how.
     

  3. brokenarrow

    brokenarrow Active Member

    5,862
    19
    Meadville
    I'm trying the motor height right now, there is no screw on the bottom of the motor grip for that though...
     
  4. marine121496

    marine121496 Wahahaha~ Supporting Member

    7,506
    2
    Ann Arbor
    Yeah that's a LPEG, has a proprietary gearbox and everything. Probably not worth the trouble of fixing I would say toss it and save for better. I want to say the gear that contacts the motor may be stripped but I'm no expert on LPEGs.
     
  5. brokenarrow

    brokenarrow Active Member

    5,862
    19
    Meadville
    It's my friends gun and he could barely afford it so.....
     
  6. Username94

    Username94 New Member

    2,718
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    New York City
    It sounds like the motor is stripped and its not turning anything. Since its an lpeg, and it take proprietary parts theres nothing he can do except throw it out and saveup.
     
  7. TheAirsoftTech

    TheAirsoftTech New Member

    3,510
    5
    I'd have to agree, on a lot of LPEGs the pinion gear is metal and the other gears are plastic. Most deaths of LPEGs are caused by the pinion eating up the bevel. That's more that likely the problem.
     
  8. Username94

    Username94 New Member

    2,718
    0
    New York City
    Yeah this could also be the problem. Either way, you can't fix it...
     
  9. TheAirsoftTech

    TheAirsoftTech New Member

    3,510
    5
    Yup, either way, it's almost impossible.

    The only LPEG I know that's fixable is the Crossman Ak, which uses v3 parts.