AO Silver Member
Join Date: Mar 2003
WD40 on its own as lubrication is probably only a short-term fix.
Before it shows signs of getting slower or weaker again, I would lubricate the linkage well with a lithium grease, but keep it away from any contacts rings on the gear.
It maybe possible to slide the complete output shaft and linkage out of the housing leaving the gear in place. If so wash out all the old lubrication and WD40 with a degreaser and lubricate it with lithium grease working it well into the sliding surfaces also coating the output shaft. Either regular lithium grease or Halfords sell 3-in-one lithium grease in a spray can for about £6. It should last for quite a few years more if the linkage and shaft are not worn and it was only some contamination. Could possibly save you (only a guess) £75 - £90 for a new motor in a few months time and with some attention your motor is probably as good or better than buying a second-hand unit anyway.
Parts suppliers like 'M*gn*ti-M*relli' don't generally grease the linkage adequately when they are built for two reasons. Its easier to just put grease on the outside of the linkage and inside of the cover and expect it to migrate to where its needed, and car manufacturers complain if too much grease is used because it gets on the internal trim. So if you grease it yourself you can do a better job getting right into the pivots.
Last edited by Sunbar; 13-09-12 at 11:17.