« Reply #1 on: June 25, 2011, 06:27:10 am »
I just had a look at genuine 1980 CR80R shop manual, looking at the diagram & photo of the R/H crankcase it looks like the flat side of the seal sits against the crankshaft, the photo shows the the crankcase laying on it's clutch side, so you are looking at the gearbox side of the crankcase with the flat side of the seal showing with main bearing behind it, the flat side of the seal has small lip around it's hole.
Logged
DELTEK, 72 MINI TRAIL, 73/4 XR75, 77/78 XR75, DG MONOSHOCK FRAME XR75, REDLINE FRAME XR75, PK RACING MONOSHOCK FRAME XR75, JWRP XR FRAME, SL70K1, 81 CR80RB, TY80A/B, YZ80A/B/D, GT50/80A, GTMX80A, 73 GTMX, GT1, COOPER MX, COOPER ENDURO,MX360A,MX250B,YZ125X MX100, 72 XL250, TC100,TL125, TY250C,IT250J