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Thread: Marmalade the IIa

  1. #51
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    1. The dog to the front drive will not disengage unless the "yellow knob" is pulled up either by hand or spring when the red knob is pulled back, and held there when it is pushed forward again. (I must admit it took me years to get my mind around how this is actually achieved). The yellow knob, when pulled up engages a pin in the "pivot shaft when the red knob is pulled back, so that when the red knob is pushed forward again a spring is compressed that will disengage the front drive dog as soon as there is no load on it.

    2. Reverse and first both have straight cut gears, with reverse having three engaged straight cut gears, so reverse is always noisy compared to other gears. Also, being sliding engagement gears, both reverse and first are likely to be damaged by careless or unskilled driving.
    John

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    Marmalade the IIa

    Quote Originally Posted by JDNSW View Post
    1. The dog to the front drive will not disengage unless the "yellow knob" is pulled up either by hand or spring when the red knob is pulled back, and held there when it is pushed forward again. (I must admit it took me years to get my mind around how this is actually achieved). The yellow knob, when pulled up engages a pin in the "pivot shaft when the red knob is pulled back, so that when the red knob is pushed forward again a spring is compressed that will disengage the front drive dog as soon as there is no load on it.


    Thank you for that!
    That’s really helped clear things up, great to finally wrap my head around how it all works!

    As my gearbox is all bolted up and sitting in the car, I thought I’d rebuild the PTO, yet found someone had welded the shaft to the gear teeth - rendering it impossible to open.... it’s a tad difficult to make out in the photo, I’m just hoping the old oil seal doesn’t leak too badly!


    Luca

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    Marmalade the IIa

    That’s a real farm repair if ever I’ve seen one. Shouldn’t get too high and mighty though as I’ve done similar to different types of plant over the years to get going again in a hurry.Marmalade the IIa

    Usually 3 days plus to get a part in to fix it on a place I used to work and look after or a 6 hour drive to go get it so the welder got used for all sorts of things it probably shouldn’t have.

    Can’t recall welding a gear onto a PTO at any stage so you can’t blame that one on me. Marmalade the IIaMarmalade the IIa
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.

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    I remember many years ago our mechanic complaining bitterly about overhauling a drilling rig where it became apparent that a previous maintainer's favourite tool was an electric welder!
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

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    That wasn't me either, promise...

    I hope no one starts on about some large winging grounds slashers that came up for auction in Gippsland around 20 years ago - that could have been me...
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.

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    A few things on the car have been like this... the strange homemade winch had all its oil seals tacked in with weld, which was certainly interesting to find!

    Gearbox back in now - but an issue with the clutch system has arisen.
    With the pedal to the floor, and the slave cylinder fully extended there isn’t enough movement in the clutch unit itself to disengage. Not really sure how else to describe the issue, other than the clutch won’t disengage. I have replaced all hydraulic aspects (master and slave cylinder, as well as soft and metal hoses)

    Thanks heaps
    Luca

    edit: I suspect the withdrawal unit was rebuilt a few splines off.... off I go to remove the gearbox again!

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    Yep, I did that as well.

    the diagram in the manual is a bit quirky in the way it is drawn.

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    [QUOTE=Ypsilophora;3099404]Thank you for that!
    That’s really helped clear things up, great to finally wrap my head around how it all works!

    As my gearbox is all bolted up and sitting in the car, I thought I’d rebuild the PTO, yet found someone had welded the shaft to the gear teeth - rendering it impossible to open.... it’s a tad difficult to make out in the photo, I’m just hoping the old oil seal doesn’t leak too badly!


    You might be able to get a 9” grinder down in there to grind it back if you’re careful

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    Quote Originally Posted by Mettalique View Post
    You might be able to get a 9” grinder down in there to grind it back if you’re careful
    Yeah, I was considering that, there’s a local engineer/Land Rover nut down the road - I think I’ll take it down to him to check out.

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    Question is why was it welded on, the splines may have gone in the gear or the shaft.

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