Burman B52/GB G-6-2, gear, driving, mainshaft
Posted: Fri Mar 03, 2023 7:42 pm
Yes, I've searched but no answer to these queries, as follows:
a) I have a maybe 1/20" of end float on the G-6-2 gear. I rebuilt the box several years ago, bushes, bearings worn parts replaced etc. I ran it for a few thousand miles with no problem except once the adjuster in the pressure plate unscrewed itself, easily remedied. I used a CP clutch at the time, as that's what I had. I then put back the AMC box that was in when I first bought the G80S. During a break in chemotherapy (which process has been arduous to say the least) I am checking stuff ready for reassembling the G80S and plan to use the Burman as the AMC is tired.
I have clamped the bottom mounting in the vice and test assembled everything to make sure I'd lost nowt! Everything runs true, no run-out or difficulties. Gears select fine as they did previously. However, I noted that the 19-8-18, bush for mainshaft driving gear is slightly proud of the end of the gear. With the end float at it's extreme outboard and the G-35-2, sleeve for mainshaft fitted the gap between the end of the bush and the sleeve is small, a couple of thicknesses of A4 copier paper (couldn't find feeler gauges! Or feel the ends of my fingers). Should I be bothered? I could file off the maybe 1/64" of "oversail" but it would be a faff.
b) I noticed that one of my clutch springs is longer than the others! I wonder if I've managed to mix in a 5 plate spring with a 4 plate set? Though I've forgotten how many plates I'm using!!!
c) I guess the tightness for the large nut for the gearbox output sprocket is "tight" not "very tight" seeing as how it's only a shallow nut; have locking washer. Just to outrage the purists, I'll be using a very good fit box spanner that Dad left me for this job.
Cheers
Johnny B
a) I have a maybe 1/20" of end float on the G-6-2 gear. I rebuilt the box several years ago, bushes, bearings worn parts replaced etc. I ran it for a few thousand miles with no problem except once the adjuster in the pressure plate unscrewed itself, easily remedied. I used a CP clutch at the time, as that's what I had. I then put back the AMC box that was in when I first bought the G80S. During a break in chemotherapy (which process has been arduous to say the least) I am checking stuff ready for reassembling the G80S and plan to use the Burman as the AMC is tired.
I have clamped the bottom mounting in the vice and test assembled everything to make sure I'd lost nowt! Everything runs true, no run-out or difficulties. Gears select fine as they did previously. However, I noted that the 19-8-18, bush for mainshaft driving gear is slightly proud of the end of the gear. With the end float at it's extreme outboard and the G-35-2, sleeve for mainshaft fitted the gap between the end of the bush and the sleeve is small, a couple of thicknesses of A4 copier paper (couldn't find feeler gauges! Or feel the ends of my fingers). Should I be bothered? I could file off the maybe 1/64" of "oversail" but it would be a faff.
b) I noticed that one of my clutch springs is longer than the others! I wonder if I've managed to mix in a 5 plate spring with a 4 plate set? Though I've forgotten how many plates I'm using!!!
c) I guess the tightness for the large nut for the gearbox output sprocket is "tight" not "very tight" seeing as how it's only a shallow nut; have locking washer. Just to outrage the purists, I'll be using a very good fit box spanner that Dad left me for this job.
Cheers
Johnny B