SOHC.co.uk Forums > CB750
750 K2 Strip & Rebuild - help please
K2-K6:
On balance I'd agree with further inspection to asses where it's at.
Is the outside non adhesive "self almagamating" tape on these? Common on looms generally and doesn't make all the contents sticky.
Lobo:
Thanks Nige, for some reason I never thought of using self amalgamating tape. (loom using conventional electrical tape - ugh)
But, the good news is the loom’s been nicely put together with quality crimps and insulation - so my plan is to not bother stripping back further. Phew.
K2-K6:
Good news if it's all good Simon, certainly makes it easier than diagnosis in situ after a reassemble :)
As part of apprentice training we had six months in electronic section and making looms etc to aircraft standard complete with design protocols that would allow at least two repair when installed with designed in loops etc along with precise cable tying in old style.
Soldering exercise, they had us make a cube of rigid wire panels all soldered by hand to make the matrix and inspected for solder flow, fillet geometry etc. Then as final test the instructor placed the cube on the floor and stood on it (all sixteen stone of him ) a ritual cruel exposure in front of the training group, with mine one of three to survive the stress test. Still smug now ;D ;D
Lobo:
Pity you don’t live next door Nige; I’m sure I could find you plenty of work… later this year plan to rewire the Kombi with all the horrors that go along with that. (still undecided whether to modify the connectors / fuse box / terminals etc.).
With your amalgamation tape idea have now fully striped the K2 loom, washed it again, and will resheath it this week.
Lobo:
An interesting last Friday with Lindsay, who is rebuilding my K2 engine.
The first job was new cushs into the Primary drive sprocket component, which had to be disassembled due riveted. Within there are 12 cylindrical rubber cushs; at 50yo they were rock hard and if deformed slightly (using a pliers) simply split and stayed that way. We stuck ‘em in a bag, and when I put it down on the bench there was a solid clunk like it was a bag of marbles.
Initially 2x new needle roller bearings were pressed into the shaft. Next the 12 new cushs went in to the lower sprocket, with upper sprocket then pushed in place. (needed a press to coax this - very tight). Then finally 6 new Allen screws, into the holes pre tapped and countersunk, using thread locker of course. All now good as new.
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