Graunchy 404 box
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Thread: Graunchy 404 box

  1. #1
    Tadpole
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    Default Graunchy 404 box

    Hi, just started happening on my 1970 NZ assembled 404 manual. Can't get into reverse, and pretty notchy between gears. Is there any adjustment I can make?

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  2. #2
    1000+ Posts robmac's Avatar
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    Quote Originally Posted by Cookiemonster View Post
    Hi, just started happening on my 1970 NZ assembled 404 manual. Can't get into reverse, and pretty notchy between gears. Is there any adjustment I can make?
    How does the clutch pedal feel ?

    Clutch hydraulics failing are a typical reason for difficult gear selection.

    The 404 has no provision for adjusting the clutch.
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  3. #3
    Tadpole
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    Pedal feels a bit soft, I topped up the reservoir to max and that made a difference for a week or so.

  4. #4
    1000+ Posts Peter Chisholm's Avatar
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    While you're at it, I'd check the gearbox oil level.
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  5. #5
    1000+ Posts robmac's Avatar
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    Quote Originally Posted by Cookiemonster View Post
    Pedal feels a bit soft, I topped up the reservoir to max and that made a difference for a week or so.
    Put on your mechanic's gloves and depress the little plunger in the centre of theclutch master cylinder reservoir, it's just under the fluid level.

    If you see a stream of bubbles (air) in the fluid, then there is good chance the clutch hydraulics need attention.

    Depressing the plunger will often "fix" the clutch for a few days.

    You can also check out if there is an air leak by inspecting the transparent nylon line between the master and slave cylinders. Look for air "slugs" in the line.
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  6. #6
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    While the plunger is depressed operate the rod that pushes the piston in the cylinder. No need to put your foot on the pedal just lift the rod with your finger. There will be a rush of bubbles as the cylinder bleeds itself, clutch should then be OK for a while.
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