4CV Transaxle Oil Level ?
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  1. #1
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    Default 4CV Transaxle Oil Level ?

    Hi,I'm a bit confused on the method for checking gear oil level in my '61 4CV. The factory (copy) manual I have references 4 plugs. But my transsaxle only has 3 total, 2 on the bottom, the level checking plug isn't there. Do I need to drain and add exactly one litre? Or am I missing something.Thanks, Alan

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    Last edited by facelnut; 27th November 2014 at 12:43 PM. Reason: spelling

  2. #2
    Too many posts! JohnW's Avatar
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    Hmm. That's odd. all the once I have seen have three plugs. One is under the differential, i.e. in line with the swing axles, one is under the gearbox in the bolt on bottom plate and the third is in between, set slightly higher. The middle one is the level plug.

    The way to do it is to empty the transaxle from the two drain plugs, put them back in and then fill with the correct amount of oil. Then you unscrew the middle plug, and check that a wee bit of oil is coming out. Replace plug and the job is done. If lots comes out, let it. If none comes out put the plug in and add maybe 200 cc maximum, leave a few minutes and recheck the level plug.

    If you still can't find the drain plug, please post a photo of the underside of the transmission and let us have a look. Maybe there is a type I've not seen?
    JohnW

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    John, is that a metric wee or an Imperial (US) wee..?

  4. #4
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    Sounds like your car has the later Type 314 gearbox installed. The fill plug on the side then becomes the level plug as well, the level plug on the base of the case was deleted at the time, with the fill plug location changed to a lower level.

    Previously un-knowing service places filled the case until it overflowed from the fill plug, which overfilled the transaxle, the excess then flowing through the axles and in extreme cases contaminating the brakes. See the attached pic for the operation of the level plug on the earlier transaxle (as described by John W above).

    A- Remplissage = fill plug
    B - Niveau = level plug
    C & D - Vidange = drain plug
    Attached Thumbnails Attached Thumbnails 4CV Transaxle Oil Level ?-boite-4cv.jpg  
    1963 Renault R4 Van
    1964 Renault R4
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    1969 Renault 8 Gordini 1300
    2002 Land Rover Defender Td5 130 - ex-CFA Region 4
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  5. #5
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    Thanks for the quick response John.
    Your description matches exactly what I see in my manual. The cutaway drawing makes it clear where the oil flows.
    BUT, only the 2 drain plugs on my T/A. I will try and post a pic later.

    Best, Alan

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    Simon,
    I must have been posting while you were. Thanks!
    That clears up my mystery, now I can proceed just like those in knowing service guys, but be right!

    You guys are so great and generous with your help!

    Friday, I hope to run the power train off the car, and see if I fixed my leaks. With any luck, I can roll everything back in next week.

    Again, thanks
    Alan

  7. #7
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    Oh, and any comments on what gear oil to use. 80/90 is easily available here, I probably have some on the shelf.
    Alan

  8. #8
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    80EP is the factory recommendation, but 80/90 will be fine for sunny California!
    1963 Renault R4 Van
    1964 Renault R4
    1967 Volkswagen 1300 Deluxe
    1969 Renault 8 Gordini 1300
    2002 Land Rover Defender Td5 130 - ex-CFA Region 4
    2005 Renaultsport Clio 182 Cup

  9. #9
    Too many posts! JohnW's Avatar
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    Quote Originally Posted by facelnut View Post
    Oh, and any comments on what gear oil to use. 80/90 is easily available here, I probably have some on the shelf.
    Alan
    Simon has nailed it I'd say. I agree completely with him.
    JohnW

    Renault 4CV 1951
    Renault R8 1965
    Renault Scenic 2005 (wife's)
    Renault Scenic 2007 (mine)
    Renault Scenic 2006 (daughter's)
    CitroŽn CX Pallas 1980

    National Co-ordinator, Renault 4CV Register of Australia

  10. #10
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    Got it, much appreciated.
    Alan

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