Howard Bantam

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  • May 28, 2014 at 10:05 pm #8362
    vhgmcbuddy
    Member

    Hi,
    I have a Howard Bantam rotavator, re-engined with a Honda. All was well until yesterday, it now won’t stay in slow gear and fast gear won’t engage at all. I am struggling with getting it apart to find the problem. I have removed the rotor assembly, “opened” up the LHS frame and removed the axle, and that is where I am stuck. The wheel assembly moves about 40mm away from the gbox but won’t come any further.

    Can anyone help me with removing the wheel assembly and further stripping, and also with the likely cause/repair required.

    Thank you

    May 29, 2014 at 10:33 am #8370
    charlie
    Keymaster

    Was there correct amount of oil in gearbox?

    May 29, 2014 at 1:10 pm #8381
    vhgmcbuddy
    Member

    Yes, all fluids were topped up before it was used.

    May 30, 2014 at 8:02 am #8441
    charlie
    Keymaster

    Copy of gearbox page from parts list in photo below and attached as pdf so you can download it.

    Attachments:
    1. Gearbox-parts-list.pdf
    June 2, 2014 at 11:08 pm #8487
    vhgmcbuddy
    Member

    Excellent, thank you. I have now found the source of the problem, the drive gear for low speed has about 20% of the length of the teeth worn away, I’m guessing from being forced into gear with the clutch engaged or from the belt dragging. I plan to repair it by rebuilding with Armoid welding rods then grinding/filing back to get the tooth profile.

    The problem I now have is how to get the drive gears off the little shaft that comes from the worm drive. I have removed the castellated nut but I can’t work out how the gear is on the shaft, it looks to thin to be splined and it ain’t shifting with a puller either.

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