It's a PV, 8-tonne model, built for the Ministry of Supply in 1944 as part of the war effort. From what I understand reading the '100 years of road rollers' book, published by Aveling Barford (1965), it would have originally come fitted with "A ford V8 engine & gearbox". I'm guessing something similar to the Ford Pilots, flathead V8.
Sadly it no longer has the original engine, and like the one pictured in the Fordson thread, has been re-engined. Mine now also has a Fordson tractor diesel engine.
My real problem however lies with the gearbox, which is not selecting 1st or reverse properly, making a grinding noise and not engaging fully. It jumps out of gear and cannot be fully held in with the gearstick, although some semblance of movement can be made as the gears catch then release. It doesn't feel like a broken tooth. I'm getting full travel on the gear linkage. The other two gears are fine. (total 3 forward, 1 reverse)
The gearbox in mine is the same as the one pictured in the scrapyard on the other thread, which leads me to believe it is possibly the original gearbox.
Does anyone recognise exactly what the gearbox might be, who it is manufactured by, or where I might go to obtain a diagram or spare parts for it? Does anyone recognise the gearbox symptoms or can tell me where to start looking? I'm guessing it's very similar to an old dumper gearbox in it's design.
Identification stamped on the gearbox reads:
ET6 7006
IF2
I'm hoping that the pictures are going to appear below....
Thanks in advance, folks!
![Image](http://www.classicmachinery.net/forum/images/post_img/415833474add5f3dc9dbf.jpg)
URL of the original image: http://i452.photobucket.com/albums/qq245/thesmiths888/PICT0691.jpg
![Image](http://www.classicmachinery.net/forum/images/post_img/6197670024add5f3f234a9.jpg)
URL of the original image: http://i452.photobucket.com/albums/qq245/thesmiths888/PICT0693.jpg