(Posted in large format but thought it might be wise to post here, since I need this sucker back in good health soon!)
Got out the old Cambo yesteray - found the friction adjustments on the standards aren't working well at all. Turning to move a standard fore and aft just spins the knob (with resistance); I can push the standards while I turn the knobs and they'll move.
Played with the bottom set-screw, no real effect, other than at full tightness it totally locks the standard in place. So I removed the front standard; there's some black crud on the bottom friction roller (the roller that the knob "propels"); cleaned that off with solvent and a q-tip and cleaned the monorail; no help. The two "top" rollers (inside the roller assembly) are really stiff - I can just barely roll them with my fingertips. I drizzled some naptha on each side and they loosened a bit, then got tight again - I assume there's grease or lube in there that's seized up?
If so, I'm guessing I need to remove the allen bolt that connects the roller assembly to the front standard, and remove and clean and re-lube those two upper rollers... am I on the right track? Are they what's putting the brakes on? If I pull that bolt, will springs and gears and shrapnel fly out of there, never to be re-assembled, or is it all very simple? There's also some grease residue on the bottom roller, across the center (doesn't contact the monorail), so it looks like perhaps that was originally greased?
Any help appreciated!
Got out the old Cambo yesteray - found the friction adjustments on the standards aren't working well at all. Turning to move a standard fore and aft just spins the knob (with resistance); I can push the standards while I turn the knobs and they'll move.
Played with the bottom set-screw, no real effect, other than at full tightness it totally locks the standard in place. So I removed the front standard; there's some black crud on the bottom friction roller (the roller that the knob "propels"); cleaned that off with solvent and a q-tip and cleaned the monorail; no help. The two "top" rollers (inside the roller assembly) are really stiff - I can just barely roll them with my fingertips. I drizzled some naptha on each side and they loosened a bit, then got tight again - I assume there's grease or lube in there that's seized up?
If so, I'm guessing I need to remove the allen bolt that connects the roller assembly to the front standard, and remove and clean and re-lube those two upper rollers... am I on the right track? Are they what's putting the brakes on? If I pull that bolt, will springs and gears and shrapnel fly out of there, never to be re-assembled, or is it all very simple? There's also some grease residue on the bottom roller, across the center (doesn't contact the monorail), so it looks like perhaps that was originally greased?
Any help appreciated!
