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Author Topic: 1973 CB 500 oil drip at shifter  (Read 1019 times)

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Offline docoffey

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1973 CB 500 oil drip at shifter
« on: May 22, 2017, 08:45:47 AM »
It's been a couple of years and 3000 mile since I finished restoring and it has dripped oil out the shifter the whole time, especially while hot. Had 8000 miles on it then, now has 11400. Looks like an old harley has been sitting there. It doesn't drip enough to require adding oil, just enough to leave sign. After it cools down it stops dripping. I've taken the side off a couple of times but can't see why it drips.
Ideas??  thanks!
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Offline flybox1

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Re: 1973 CB 500 oil drip at shifter
« Reply #1 on: May 22, 2017, 09:01:54 AM »
Pull out and replace the seal #5
 91202-216-000

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Offline docoffey

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Re: 1973 CB 500 oil drip at shifter
« Reply #2 on: May 22, 2017, 09:29:05 AM »
Okay, I'll give that a shot. Thanks.
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Offline Deltarider

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Re: 1973 CB 500 oil drip at shifter
« Reply #3 on: May 22, 2017, 11:12:03 AM »
Or do like me and use Castrol GTX High Mileage 15W-40. Stopped leaking at the shifter seal.
« Last Edit: May 22, 2017, 11:30:59 AM by Deltarider »
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Offline Pan1cReaper

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Re: 1973 CB 500 oil drip at shifter
« Reply #4 on: May 23, 2017, 05:38:07 PM »
That seal is like 4 bucks and pretty easy to replace. Worth doing it, thats for sure.
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Offline carnivorous chicken

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Re: 1973 CB 500 oil drip at shifter
« Reply #5 on: May 23, 2017, 06:55:15 PM »
And verify that there isn't an o-ring chain that's too wide. Not sure about the 500s, but the 550s have a seal that the an oversize chain will rub and create a leak.
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Offline Mooshie

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Re: 1973 CB 500 oil drip at shifter
« Reply #6 on: May 23, 2017, 07:39:59 PM »
Quote from: flybox1 on May 22, 2017, 09:01:54 AM
Pull out and replace the seal #5
 91202-216-000



+1. Sounds like the beginnings of a shifter seal breakdown.  It will only get worse.  Replace.  Super simple to do
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Offline docoffey

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Re: 1973 CB 500 oil drip at shifter
« Reply #7 on: May 26, 2017, 07:11:41 AM »
Okay, I have a new seal from 4into1.  What's the trick for removing the old seal???
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Offline docoffey

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Re: 1973 CB 500 oil drip at shifter
« Reply #8 on: May 26, 2017, 07:55:02 AM »
Never mind, I did get it off with a scribe and the new one is a different size!! crap.
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