Mark Millard
Guest
Bought my NT700 in Febuary 2014, this is a 2008 bike that only had 1400 miles on it and is in good condition, until three weeks ago I had put another 600 miles on it. Went out on a monday night to a bike meet at the coast, this is about 40 miles either way on the motorway so it was a fast run, got back home left it on the side stand while I opened my garage door, then wheeling it back into the garage there was a rumbling and squeaking noise from the rear diff. got the bike but I drained it off and it was still . I let it cool down for a while but when you spun the rear wheel on the centre stand there was a bearing rumble, I had changed the oil in the rear diff when I first got the bike but I drained it off to check and it was clean with no metal filings in it,so then I stripped the back end down to get the rear wheel off, it must have been an idiot that designed this bike !! in the end I took the right hand side pannier off and it was a lot easier once I got the brake stop bolt off. Once the diff was off the frame there was no rumble when you turned it but of course there is no load on it then, all the splines were well greased so I can only assume I have a faulty bearing. Looking inside the diff through the oil filler hole you can see a slight mark on all the teeth on the main crown wheel, and there was some marks on the casting inside as though the crown wheel had just been skimming it. Anyway what to do next I thought ? a new diff from Honda was out of the question due to the price, maybe get a transmission mechanic to look at it to replace the bearing ? but no looked on E Bay and there was a low mile diff off an NT650 for ?90 so after checking all the various Honda code numbers which looked the same so I bought it. This has arrived and is in good condition and is a duplicate of the NT700 diff, just cleaned all the splines and given it a coat of silver paint, the Moly 60 paste has arrived, so Saturday is reassembly day, does anybody have any tips on the reassembly ? Thanks Mark.
