Reply to "Replacement speedometer lubrication"

If you remove the right angle drive using the big dual-thread nut (top thread= left-hand thread, bottom thread= right-hand thread), be very sure it is adjusted DOWN against the ZF as far as possible! If the angle drive sits high up on its dual-thread adapter nut, the drive is from only the tips of the forked shaft inside the adapter, and from the tips of the second, larger forked adapter shaft in the ZF.

After a long time rigged this way, using only the 43-yr-old 'lube' sealed inside the adapter, the forked tips will work-harden and shatter, even from the tiny load of the speedo cable. A new or used 90 degree adapter sells for outrageous amounts of money- if you can even find one, and the larger forked extension shaft (a real ZF gear & integral shaft) is even more expensive.

I've repaired quite a few broken angle adapters and added zerk fitting to them for future service, but I cannot fix a damaged ZF gear/shaft with broken tips. Mangusta and pushbutton Pantera 90 degree adapters use spur gears instead of bevel gears, and usually strip teeth rather than shear the forked shaft tips. Also virtually unrepairable & non-existent at vendors. Check yours now for proper placement!