Stevens in "know thy beast" says the burman clutch push rod is 11 3/8" long, and there should be a 5/16" ball between clutch push rod and the clevis fork. The one I took out of my 1954 Comet box (manufactured in late 53) is 11 5/16 long and the ball is 1/4". If I put a 5/16" ball in the overall length is too long for the adjuster thingy to sit flush with the cover. The clutch and plates look normal, but this is my first experience with Vincents, Comets and Burman gear boxes other than their Commando descendants, so what do I know? I have trying to find a clutch adjustment to stop it crunching shifting into first gear when stopped, moving shifts are fine, the clutch does not drag, the pressure plate rises level, there is no perceptible drag with the clutch pulled in and the kickstart depressed, so my last desperate attempt to cure this was to make sure that the lifting lever was at the correct angle for maximum pressure plate lift.
So my question is, were there differences in Burman boxes over the years regarding push rod, ball bearings etc.? If Stevens is right (is he right?) the longer push rod and ball will be way too long for my gear box.
So my question is, were there differences in Burman boxes over the years regarding push rod, ball bearings etc.? If Stevens is right (is he right?) the longer push rod and ball will be way too long for my gear box.