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Thread: Norton Commando Clutch Part One

  1. #1
    Join Date
    20th January 2008 - 17:29
    Bike
    1972 Norton Commando
    Location
    Auckland NZ's Epicentre
    Posts
    3,554

    Norton Commando Clutch Part One

    The clutch on my Commando has been getting worse lately, not operating very smoothly. I had it apart last year and cleaned all the plates but the problem seems to stem from gearbox oil entering the clutch via the clutch pushrod.
    I purchased an aftermarket pushrod seal kit that goes over the end of the shaft sealing it.
    Pretty straight forward job...just usual imperial hand tools and a special clutch diaphragm spring remover.

    Click image for larger version. 

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    Primary Side.
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    Alternator, primary drive and clutch.
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    homemade special tool.
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    Gungy clutch plates.
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    Freshened up with a good scrub, note the original plates are solid fibre, and one is a later steel/fibre one. The old ones apparently last forever.
    Click image for larger version. 

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    The transmission oil leaks in here. pushrod is 6mm, some aftermarket ones are 1/4 which according to the instructions is correct ( would have thought it would be other way around)

  2. #2
    Join Date
    20th January 2008 - 17:29
    Bike
    1972 Norton Commando
    Location
    Auckland NZ's Epicentre
    Posts
    3,554

    Part 2

    Click image for larger version. 

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    New seal and pushrod, polish pushrod where it passes seal.
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    Fit seal and holder, reassemble clutch.

    The primary cover seal was in good order so reused it, put a thin smear of silicon on the outer cover and refitted it.
    Cover is held on by one bolt
    Poured in a 100mls of ATF for the primary chain ( the clutch operates dry) Atf is red so can sort out the leaks by colour...
    Refitted the footrest and job done.
    Took about 1 1/2 hours.
    Went for a ride and clutch action perfect...well as perfect as you get with a 40 year old bike.

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