404 axle 1970 sedan
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  1. #1
    Fellow Frogger!
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    404 axle 1970 sedan

    Diff oil leaking past the seals on the axle and fouling the rear brakes, availability of seals and what else could need attention while I'm down there. Problem number 2 weeping welsh plugs in cylinder head Need to remove head to replace? regards cane toad

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  2. #2
    Gone Fishin' Ray Bell's Avatar
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    Which welsh plugs? Usually in the rear... remove engine, not head, to replace.

    There are no seals on the rear axles, merely slingers made out of a bakelite-like material. They get damaged dragging the rough surface of the axle shaft over them.

    Should be readily available, but bear in mind that the last ones I bought were from Cooke & Saville.

  3. #3
    Fellow Frogger!
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    So if there are no seals what stops the diff oil from travelling along the axle to the wheel hub Welsh plugs on the rear of the head and on the exhaust side taking out the motor seems like a major regards cane toad

  4. #4
    Gone Fishin' Ray Bell's Avatar
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    The lack of parking spots where the car's on a sixty degree lean...

    The slingers work pretty well in normal motoring.

    As for the welsh plugs... you don't have to actually remove the engine, just lift it forward. Total job time should be less than three hours.

  5. #5
    Fellow Frogger!
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    Thank you Ray, you are a mine of information. regards, cane toad .

  6. #6
    Member LynCliff's Avatar
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    Have you cleaned out the drain tubes on the the hubs behind the backing plate and also made sure the breather on the axle housing is not blocked.
    Any oil that gets past the seals should drain out on the ground.

  7. #7
    Gone Fishin' Ray Bell's Avatar
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    I'm sure David McBean could have told you the same...

    Those slingers in the back axles have to be changed, by the way, if you're changing from coarse spline to fine spline axles... not sure if they change again when you go to the bigger fine spline of the '68 model.

    So, in short, there might well be three different slinger sizes. I know there are two...

    And yes, LynCliff... you're dead right... I forgot about those drains.

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