RogerD Posted October 4, 2012 Posted October 4, 2012 Haven't been here in awhile...had another bout with congestive heart failure that kept me down for a bit. Ready to start on my restoration - 1970 DT1. I know we've been over this all before, but i need to replace the oil seals. Can I just pull them off the ends of the crankshaft without splitting the cases, and just press the new ones in? Any tricks or advice? A good source for the seals other than ebay? Roger
blackhat250 Posted October 4, 2012 Posted October 4, 2012 Yip rodger , you can remove the old seals from the crank, after flywheel , and pinion gear removed, two or three self tappers screwed into old seals, to aid removal,
Moderator Airhead Posted October 4, 2012 Moderator Posted October 4, 2012 yeah greetings again Roger, as blackhat said...maybe with a bit of a blow over from a hot air gun just to warm them a bit first. According to the parts list the seals are Right side...SW-42-72-10 Left side...SW-30-72-10 You should be able to pick them up cheaply at any good industrial bearings and seals supplier...Far cheaper than Yamaha packaged ones
RogerD Posted October 5, 2012 Author Posted October 5, 2012 Thanks for your help! I've never changed them this way before. The bike runs, but kinda rough and I always like to get them running well before starting restoration work. Hopefully the seals will do it. I didn't do a leak test, but suspect that's the case... Roger in Florida
RogerD Posted October 11, 2012 Author Posted October 11, 2012 Had another case of Congestive Heart Failure last Thursday.... Got out of the hospital last night. I'd still be there if they decided to do the bypass surgery.... Felling better, may even do the oil seals this weekend!!!! Rog
Moderator Airhead Posted October 11, 2012 Moderator Posted October 11, 2012 Never mind the bike Roger, cant you get yourself sorted out
Sacha Posted October 11, 2012 Posted October 11, 2012 Hope you stay feeling better! Take care of yourself.
RogerD Posted December 3, 2012 Author Posted December 3, 2012 Finally felt good enough to work on the bike. I am trying to replace the clutch-side oil seal on the crankshaft. I have the clutch removed. I have the nut and gear removed from crankshaft. I removed the large c-ring, and It looks like there is a large washer behind it holding the oil seal in place. I,m afraid to just start prying on it. It looks like there is a sealant of some kind around the outer edge of this washer. Advice??? Thanks, Roger
blackhat250 Posted December 3, 2012 Posted December 3, 2012 Yeh rodger" i scewed two self tapping screws in , to give me some purchase, thier will be sealant on outers edges of seal, . just wrestle it out, ,
RogerD Posted December 4, 2012 Author Posted December 4, 2012 Sorry for the delay - I've been trying to put a photo in here for half an hour...... What I'm talking about is not the seal itself, but a big copper-colored washer keeping the seal in place right? I have a new seal, but not a spare washer..... Still trying to post a phto from photobucket - drives me nuts!!!!
RogerD Posted December 4, 2012 Author Posted December 4, 2012 Got it!!! I was fooled because the old seal looks different than the new one. The metal was part of the seal. Do I need to put some sealer around the outside lip of the new seal before pressing it in?
RogerD Posted December 4, 2012 Author Posted December 4, 2012 Thanks for the help! The seal popped right out with the screw just into the metal face of the old seal. Now I'll do the Magneto side and see if it runs a little smoother.. Roger
Recommended Posts