Age-old oil leak around transmission output
#11
I'm assuming you are running a ratchet top 4speed. I'm also assuming you have a fresh tranny. On pre-78 1/2 4 speeds there is a very tiny "L" key (PN 35175-38, 1941 to1977 spacer key) that locks the spacer to the mainshaft between the mainshaft seal and sprocket. I left this out once and had leaking problems until someone asked me if I had put the key back. When I replaced the key, my leaking problems ended. The 78 1/2 (cow turd top) and later 4 speeds eliminated the key.
Look in your shop manual. It is very small and can be easily missed. A lot of the time, it will come off with the sprocket and fall off and lost to history.
Look in your shop manual. It is very small and can be easily missed. A lot of the time, it will come off with the sprocket and fall off and lost to history.
#13
#14
#15
Ok, I did some research and the key thing does not go with my '78.
The little L key is part number 35175-38 and it fits into spacer number 35171-37 but both of these parts are specified for models up to early '77.
From late '77 to '79 the factory uses spacer number 35070-77.
35070-80 is used for '80 and '81.
35070-82A is used for '82 and '83 belt drive FXB models.
35079-82A is used for '82-forward except for belt drive models.
Nothing after early '77 uses the L key.
Im wondering now which spacer I bought. I assume it is the one specified for a '78 FXS, the 35070-77.
Im wondering now if the 35079-82A for '82-forward is what I need. Or, should I go back to the pre-early-'77 set-up with the L key.
Gets complicated.
The little L key is part number 35175-38 and it fits into spacer number 35171-37 but both of these parts are specified for models up to early '77.
From late '77 to '79 the factory uses spacer number 35070-77.
35070-80 is used for '80 and '81.
35070-82A is used for '82 and '83 belt drive FXB models.
35079-82A is used for '82-forward except for belt drive models.
Nothing after early '77 uses the L key.
Im wondering now which spacer I bought. I assume it is the one specified for a '78 FXS, the 35070-77.
Im wondering now if the 35079-82A for '82-forward is what I need. Or, should I go back to the pre-early-'77 set-up with the L key.
Gets complicated.
#16
Stay with the late model stuff the lip on the spacer is bigger , better support all round for torquing it down . Clean everything with brakecleaner and smear a light coat of permtex Ultra Gray around the splines where the spacer sits against the sprocket torque it and let it dry overnite , found that little trick and get you a reprieve for a while if a teardown isn't in the books for a while .
#17
Ok, I did some research and the key thing does not go with my '78.
The little L key is part number 35175-38 and it fits into spacer number 35171-37 but both of these parts are specified for models up to early '77.
From late '77 to '79 the factory uses spacer number 35070-77.
35070-80 is used for '80 and '81.
35070-82A is used for '82 and '83 belt drive FXB models.
35079-82A is used for '82-forward except for belt drive models.
Nothing after early '77 uses the L key.
Im wondering now which spacer I bought. I assume it is the one specified for a '78 FXS, the 35070-77.
Im wondering now if the 35079-82A for '82-forward is what I need. Or, should I go back to the pre-early-'77 set-up with the L key.
Gets complicated.
The little L key is part number 35175-38 and it fits into spacer number 35171-37 but both of these parts are specified for models up to early '77.
From late '77 to '79 the factory uses spacer number 35070-77.
35070-80 is used for '80 and '81.
35070-82A is used for '82 and '83 belt drive FXB models.
35079-82A is used for '82-forward except for belt drive models.
Nothing after early '77 uses the L key.
Im wondering now which spacer I bought. I assume it is the one specified for a '78 FXS, the 35070-77.
Im wondering now if the 35079-82A for '82-forward is what I need. Or, should I go back to the pre-early-'77 set-up with the L key.
Gets complicated.
#18
#20