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Main Area => General GS500 Discussion => Topic started by: twistit on May 23, 2013, 07:23:15 AM

Title: Counter Balance Shaft Bearing Shells - No Markings on the CB shaft
Post by: twistit on May 23, 2013, 07:23:15 AM
The manual says that the CB shaft should be marked A, B or C.  Mine have no markings on them at all, just a 3 stamped into the shaft.  Should I just go by the engine case code diagram for the CB shell bearings?
Title: Re: Counter Balance Shaft Bearing Shells - No Markings on the CB shaft
Post by: The Buddha on May 23, 2013, 07:49:51 AM
Look in the back of the motor. The part that would be facing the swingarm.
Cool.
Buddha.
Title: Re: Counter Balance Shaft Bearing Shells - No Markings on the CB shaft
Post by: twistit on May 23, 2013, 09:24:50 AM
Quote from: The Buddha on May 23, 2013, 07:49:51 AM
Look in the back of the motor. The part that would be facing the swingarm.
Cool.
Buddha.

OK, that's what I figured.  Somehow I got the idea that there was a letter etched on the CB shaft like the number 1 or 2 on the rod caps.
Title: Re: Counter Balance Shaft Bearing Shells - No Markings on the CB shaft
Post by: twistit on May 23, 2013, 10:41:12 AM
Quote from: twistit on May 23, 2013, 09:24:50 AM
Quote from: The Buddha on May 23, 2013, 07:49:51 AM
Look in the back of the motor. The part that would be facing the swingarm.
Cool.
Buddha.

OK, that's what I figured.  Somehow I got the idea that there was a letter etched on the CB shaft like the number 1 or 2 on the rod caps.

Wait, I just looked at the Factory Shop Manual illustration P3-37 again and it clearly shows that the Counter Balance Shaft should have a letter on it, A, B or C which makes sense because all the codes are a combination of the inner journal diameter and the outer shaft diameter.  You need both.  My Counter Balance shaft has no A, B or C markings.  WTF!
Title: Re: Counter Balance Shaft Bearing Shells - No Markings on the CB shaft
Post by: Paulcet on May 23, 2013, 10:47:16 AM
You said there is a "3".  Maybe that's a "B"?
Title: Re: Counter Balance Shaft Bearing Shells - No Markings on the CB shaft
Post by: twistit on May 24, 2013, 07:23:29 AM
Quote from: Paulcet on May 23, 2013, 10:47:16 AM
You said there is a "3".  Maybe that's a "B"?

Nope, it's a 3, and anyhow, the Counter Balance shaft is supposed to have printed letters, not stamped numbers.
Title: Re: Counter Balance Shaft Bearing Shells - No Markings on the CB shaft
Post by: Paulcet on May 24, 2013, 10:46:23 AM
Then I suppose you will have to measure the OD of the CB shaft journals.  So if it is 31.976-31.984mm it is "C".
Title: Re: Counter Balance Shaft Bearing Shells - No Markings on the CB shaft
Post by: twistit on May 26, 2013, 06:36:34 PM
Quote from: Paulcet on May 24, 2013, 10:46:23 AM
Then I suppose you will have to measure the OD of the CB shaft journals.  So if it is 31.976-31.984mm it is "C".

Yah, what he said.