I have seen a few links here recommending lith/moly grease for such purposes.
Below is the list of recommended grease/lubricant etc. used in the Bafang motors at factory:
Bafang has advised the following greases are applied during assembly to Bafang units:-
Bearing grease - Unical Lithium grease No 2. This grease is applied to the thrust and needle bearings contained in the BB.
Plastic gear grease - Unical Aviation Synthetic Grease AG-11. A white lithium grease is used between the motor shaft and the nylon helical gear.
Metal gear grease (Black)- HCF Lubrications Technology Co Ltd's MG - 2A grease. This is situated on the large reduction gear and the small metal transfer gear. This should be periodically replaced, given grit can get into this area and grind on these gears.
Metal gear grease (white) - Unical Polybear Grease BLD 227B. From correspondence issued by Bafang, it is unclear where this lubricant is used.
Bafang have acknowledged that these greases are unlikely to be available locally and have advised to use Shimano substitutes where possible.
Other disposables used in construction:-
Blue loctite - application to various bolts and the end of the motor shaft.
White sealant - This is used where wiring crossing between the two sides of the motor. This only requires servicing where the motor has been disassembled.
This list may have already been posted (I couldn't find) but prevention is certainly better than cure and all that...
Darren
