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Thread: Mechanical clutch not fully engaging/not "clearing"? S1+S2A+S3

  1. #1
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    Mechanical clutch not fully engaging/not "clearing"? S1+S2A+S3

    I have a S3 engine and S3 gearbox in a S1 car, mated with a S2A bellhousing (retaining the mechanical clutch). I put it all together a year ago. All parts new or reconditioned. Since then I’ve done less than 500km. Once it’s in a gear, the car drives fine, but selecting them can be dicey. If I throw the lever quickly, it seems to select better.


    With the car in gear, and clutch pedal depressed, it doesn’t go anywhere. And when I lift off the pedal, the car takes off - as per normal. So the clutch seems to work partially. Clutching and coming to a stop is fine too. Clutch feels heavy enough.


    But when selecting a gear, it feels like the clutch isn’t fully “letting off” or “clearing”. It takes a couple of tries to find gears. This is most noticeable on reverse, where there is almost always a grind, and then it drops into gear. 1st and 2nd are also hard to select, but 3rd and 4th are pretty reliable.


    The mechanical linkage doesn’t feel sloppy. I’ve adjusted the clutch operating rod (part # 236835 or 217986), to get the max possible throw - any more and the lever it connects to would be hitting the chassis (see pics).


    So I feel like the clutch is mainly working as it should, but it’s not quite fully disengaging/getting to full neutral. What do you think? Can the three jam nuts on the clutch itself be used for adjustment? Cheers

    released.jpgdepressed.jpg

  2. #2
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    Sounds like the input shaft is still spinning even though the clutch is depressed. Could be due to binding in the bush or bearing in the centre of the flywheel, or the friction plate being distorted, which can happen when trying to line up the gearbox to the motor. My experience with British gearboxes from that era is that first and reverse are often “ scrunchy” to select, sometimes it helps to select second then first before starting off.
    Cheers,
    Woolly.

  3. #3
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    Or the driven plate is sticking on the splines. Did you apply some lube to them? Not oil, obviously.
    ​JayTee

    Nullus Anxietus

    Cancer is gender blind.

    2000 D2 TD5 Auto: Tins
    1994 D1 300TDi Manual: Dave
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  4. #4
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    JDNSW is online now RoverLord Silver Subscriber
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    Most likely issue is perhaps that the clutch release shaft is incorrectly engaged in the splines of the clutch release fork, probably one spline off.

    Another possibility is that the release fingers on the pressure plate (clutch cover in LR terminology) are not correctly adjusted - these need to be adjusted to exactly the same height with the driven plate in place. If the pressure plate is loose on the flywheel, it will also cause this effect.

    A suggestion. If you remove the transmission tunnel and the gearlever this uncovers a hole in the bell housing. You may be able to see what is happening at the actual clutch plate.
    John

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

  5. #5
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    Thanks Woolly, Tins and JDNSW. I'll give those a try.
    And yes, I applied copper anti-seize to the splines.

  6. #6
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    Got help and the issue is now resolved. In case anyone has similar symptoms, the clutch friction plate was too thick (maybe a heavy duty version) fitting standard one fixed it.

  7. #7
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    Quote Originally Posted by Specimen View Post
    Got help and the issue is now resolved. In case anyone has similar symptoms, the clutch friction plate was too thick (maybe a heavy duty version) fitting standard one fixed it.
    that would do it..
    ​JayTee

    Nullus Anxietus

    Cancer is gender blind.

    2000 D2 TD5 Auto: Tins
    1994 D1 300TDi Manual: Dave
    1980 SIII Petrol Tray: Doris
    OKApotamus #74
    Nanocom, D2 TD5 only.

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