Hi, still can't find the reverse light switch but can someone help me with the reverse switch part no. . Even better if it could be pointed out for me on eBay.
One of the suggested methods of filling the gearbox with oil is by removing the reverse switch & pouring the oil through the hole. I can't help with the exact location as I found it easier to use the breather opening but it must be somewhere on the top of the casting and accessible via the bonnet opening.
I recollect that there was a picture or diagram previously posted on the forum showing these two openings so possibly a forum search for filling gearbox oil will bring this up.
Hi All
Try my previous post here as to the revering light switch location (with pictures) - https://www.fiatforum.com/ducato/279452-2-8-jtd-gearbox-breather-reverse-switch-location.html
As someone has said I would refill through the speedo Transducer hole on the top of the differential casing taking car not to drop the small washer on the bolt into the transmission & you can see the original oil level before draining.
Cheers