Countershaft seal and etc..

[MRDRcycle]

Does anyone know the size of the nut for the countershaft sprocket? I'm going to buy a socket for it. The is for a 73 RD 350.

Also, anyone have a good option for a seal puller? I've looked at a few types/methods and any insight would be great.

I'm guessing I should also lube all the new seals with multi purpose grease?

Thanks!

[Yamaha 179]

I use a 1 1/4 inch SAE socket to remove the countershsaft nut.  Been doing that since I bought my first RD 350 and never found the need to buy a metric equivalent.  I use an air impact for removal but NEVER use it to reinstall the nut after I stripped the output shaft once a hundred years ago.  Just do it by hand with a good size ratchet or breaker bar.  Yes, lubricate the inner diameter portion of the seal with a light grease.
Lyn Garland

[m in sc]

i do the exact same thing, but i think its a 32

when you pull the sprocket, pull the spacer on the shaft behind it and just pry the seal out. no special tool needed. big dull flatblade screwdriver will do it.

[MRDRcycle]

Awesome! Thanks again.

I went for a longer ride than usual a few days ago and trans oil blew all over my rear tire. It was pretty sketchy and The fluid is coming from the area around the sprocket.  I bought all of the seals and etc from economy so I'm thinking I'll replace most if not all of them.

[m in sc]

if that nut isnt tight, it can and will leak thru that spacer to the sprocket isnt right up on it. just fyi.

[MRDRcycle]

Ah. I'm looking at it now and the nut isn't tight at all. IF that locking washer wasn't in place, I could twist it off easily with my fingers.

[m in sc]

TIGHTEN IT UP. might be all there is to it. 

[MRDRcycle]

Thanks for the heads up! Is the torque range on that 50-60 ft-lbs? I'm looking in my "manual" and it says 50-60 for a 30mm nut. 32 isn't listed on their chart.

[m in sc]

its actually by thread size.

60 ft/lbs should do it.

[SUPERTUNE]

I go on the conservative side at 50 ft-lbs, these are old bikes and who know what was done before with over tightening like Lyn said.
Once the seal is out, I spray out with brake clean and glue in the spacer with motoseal against the inner bearing race to prevent seepage through the spacer.
Chuck

[m in sc]

looks like max setting is 58 ft lbs.(actually looked it up) id def follow chucks advice here. 

[MRDRcycle]

Will do! Thanks again and much appreciated!

Do I need to drain the transmission fluid out before replacing the seal. I'm guessing I would if I were to replace the shift shaft seal and neutral switch as well.

[m in sc]

not really as the n switch is an o-ring. id still put a pan under to catch drips.

[85RZwade]

Lean 'er over to the right and the oil will stay put