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AT M4 not firing

  • 04-08-2011 2:09pm
    #1
    Peter03
    Registered Users, Registered Users 2 Posts: 80 ✭✭


    Hi, yesterday my aimtop m4 stopped firing completly. There is no response from the trigger or motor. Its definately not the fuse or battery. Any help would be great. Cheers!


Comments

  • #2
    Leftyflip
    Registered Users, Registered Users 2 Posts: 7,463 ✭✭✭Leftyflip


    Check the connectors going to the motor from the gearbox - these have a tendency to work loose especially in M4 variants. The vibrations from the motor cause them to drop off or worst case snap off at the bend.


  • #3
    Peter03
    Registered Users, Registered Users 2 Posts: 80 ✭✭Peter03


    Leftyflip wrote: »
    Check the connectors going to the motor from the gearbox - these have a tendency to work loose especially in M4 variants. The vibrations from the motor cause them to drop off or worst case snap off at the bend.
    How do i get at the motor and gearbox? I'm new to this stuff. Thank for help bud


  • #4
    darkslider
    Registered Users, Registered Users 2 Posts: 200 ✭✭darkslider


    If the motor connections seem ok (unscrew the 2 small screws at the base of the grip to get at it), it sounds like a dodgy trigger switch. If you're not one for taking the gearbox apart you'll most likely want to get someone to look at this for you. It's not a tough job, just a bit finikey.


  • #5
    Peter03
    Registered Users, Registered Users 2 Posts: 80 ✭✭Peter03


    darkslider wrote: »
    If the motor connections seem ok (unscrew the 2 small screws at the base of the grip to get at it), it sounds like a dodgy trigger switch. If you're not one for taking the gearbox apart you'll most likely want to get someone to look at this for you. It's not a tough job, just a bit finikey.
    I got the motor out and it seemed to be working fine. How do I get to the gearbox?


  • #6
    darkslider
    Registered Users, Registered Users 2 Posts: 200 ✭✭darkslider


    The gearbox is a complete unit so you'll need to take the gun apart to get it out of the body. I'm not familiar with AimTop stuff so I don't know the disassembly procedure for the gun. I guess the best think you could do is look at the M4 disassembly thread in the Airsoft technical forum.

    Did you try hooking the motor up to the battery to make sure it's still working? Taking the whole thing apart is a lot of work if the problem is the motor.


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  • #7
    Peter03
    Registered Users, Registered Users 2 Posts: 80 ✭✭Peter03


    darkslider wrote: »
    The gearbox is a complete unit so you'll need to take the gun apart to get it out of the body. I'm not familiar with AimTop stuff so I don't know the disassembly procedure for the gun. I guess the best think you could do is look at the M4 disassembly thread in the Airsoft technical forum.

    Did you try hooking the motor up to the battery to make sure it's still working? Taking the whole thing apart is a lot of work if the problem is the motor.
    Yeah I took the motor out and connected the battery up and fired. The cog moved about a 1/5 of a rev. Is this working order for the motor? Or should it spin for full auto?


  • #8
    ronan keane
    Registered Users, Registered Users 2 Posts: 1,416 ✭✭✭ronan keane


    Peter03 wrote: »
    Yeah I took the motor out and connected the battery up and fired. The cog moved about a 1/5 of a rev. Is this working order for the motor? Or should it spin for full auto?

    You just found the problem :pac:


  • #9
    Leftyflip
    Registered Users, Registered Users 2 Posts: 7,463 ✭✭✭Leftyflip


    Check the plugs on the cable, see if they move easily at the bend, they shouldn't.

    Can you spin the motor freely by hand? There should be little or no resistance in it. There are two springs on the top of the motor (beside the tabs) are these present? If yes, are they touching the gold coloured blocks with cable leading from them?

    The motor should just keep turning out of the gun and hooked to the battery.


  • #10
    Peter03
    Registered Users, Registered Users 2 Posts: 80 ✭✭Peter03


    Leftyflip wrote: »
    Check the plugs on the cable, see if they move easily at the bend, they shouldn't.

    Can you spin the motor freely by hand? There should be little or no resistance in it. There are two springs on the top of the motor (beside the tabs) are these present? If yes, are they touching the gold coloured blocks with cable leading from them?

    The motor should just keep turning out of the gun and hooked to the battery.
    There is alot of resistance. So a new motor is what it needs im guessin?


  • #11
    Leftyflip
    Registered Users, Registered Users 2 Posts: 7,463 ✭✭✭Leftyflip


    Possibly it's hard to tell you when I can't see the motor and AEG for myself - but it sounds like it could be the motor if it's not the other things we've mentioned. I know you can't tell if its the trigger switch or not as its inside the gearbox. The motor should keep turning when hooked up to the power.


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  • #12
    Peter03
    Registered Users, Registered Users 2 Posts: 80 ✭✭Peter03


    Leftyflip wrote: »
    Possibly it's hard to tell you when I can't see the motor and AEG for myself - but it sounds like it could be the motor if it's not the other things we've mentioned. I know you can't tell if its the trigger switch or not as its inside the gearbox. The motor should keep turning when hooked up to the power.
    Thats sound lefty, cheers for the help! Ill try a new motor anyway.


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