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Discussion Starter · #1 ·
I'm starting to run up against the age of this bike. It seems they're common issues and I'm hoping that someone here can provide some insight. I'll start with the mechanical seal that I ordered which as it turns out is the wrong size, enlarging the opening scared me so I thought I'd try the Shep method:

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As you can see above some material from the new seal remains in the housing. My first question is whether this seal is now ruined? If not will the silicone pictured work to install it into the old housing?

Honda Motorcycle Parts 1979 CX500C A WATER PUMP + C.D.I. PULSER Diagram

I'm also not seeing number 12? Did it rust away? Or has the PO misplaced it? I'll move on to my concerns with the stator I received from RM Stator:

GENERATOR STATOR
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This is with the bolt threaded in all the way.

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It has the correct number of wires so I'm guessing it is for a CDI bike. If this is in fact the correct stator for this bike I'll just get some shorter bolts, does the orientation (rotation) matter? The other question I have is regarding the small o-ring for the oil orifice between the head and the block. I ended up getting the larger of the two sizes available from partzilla so I picked some up from a local supplier. The ones I have now are 7 x 1.5 not 6.9 (I'm guessing no big deal on this spec) but the material is NBR70. Can I use these o-rings? If so I'll be bolting the heads on tomorrow. Sorry for the long post, I just really want to clear these issues up so I can continue.

P.S. 12mm thrust washer for the shift lever? Anyone have a spare?

Thanks
 

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Discussion Starter · #3 ·
How about the orientation? Am I just concerned with where the wiring makes the most sense? Should I sent the stator back? What would be the best replacement?

P.S. man that was fast!
 

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You overcooked the mech seal...ouch! And the wrong sealant...Permatex thermostat gasket sealant (gray). When you pass the cup over an open flame (propane torch on low or gas stove) as soon as it begins to sizzle, pluck it from the cup. The seal will come out pretty clean and not buggered up. I wouldn't chance that one.:(
 

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You overcooked the mech seal...ouch! And the wrong sealant...Permatex thermostat gasket sealant (gray). When you pass the cup over an open flame (propane torch on low or gas stove) as soon as it begins to sizzle, pluck it from the cup. The seal will come out pretty clean and not buggered up. I wouldn't chance that one.:(
There are many sealants that work just fine.. Almost any ATV will do the job.
 

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Discussion Starter · #7 ·
It didn't even sizle? :( I should have modfied the case, I even have a drill press :( 44$ F*#@[email protected]#g dollars :(

P.S. I'm not too surprised, I always burn dinner. Anyone wat to buy a bike?
 

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The little left in the cup I wouldnt worry about.. just thouroghly clean the cup thats in the bike.. I got the worst of it out with a screwdiver carefully then used a little brake cleaner to clean out the cup before gluing in the seal. I would use the permatex black before I used the clear personaly.. Its high temp.. Your seal is fine just glue it in.
 

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Part number 12 - sits inside the impeller - but it does need to be there.. you may need to dig through some rust to find it as well...
 

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Discussion Starter · #10 ·
So, it should be there between the seal and the impeller?

DSCN1769.JPG

I don't see a recess for it though?
 

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look on the end of the splines. might still be on there.
 

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Discussion Starter · #14 ·
any ideas on the o-rings? I'm concerned about the temperature rating. I can order the OEMs from partzilla but I'd like to work on it tomorrow.
 

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Discussion Starter · #16 ·
from what I can tell the ones I have (NBR70) are good up to 120 degrees celsius. I'll go ahead and put the heads on tomorrow and pick up some permatex on monday. Thanks for all of the feedback
 

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Discussion Starter · #17 · (Edited)
look on the end of the splines. might still be on there.
If it goes where I think it's supposed to go it couldn't still be on the splines. It should sit between the impeller and the rubber seal behind the polomint right? I just want to be sure because there certainly wasn't one here, but there did seem to be an outline of where one may have been.

Honda Motorcycle Parts 1979 CX500C A WATER PUMP + C.D.I. PULSER Diagram

... or does it actually sit inside of the polomint to keep it centered?
 

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its a spacer and if it was not there it would have ground the polo mint or graphite seal up and scored the back of the impeller on the rear cover

so it was there and has fallen prey to your personal black hole

good news to find the original simply buy and get a replacement the original will pop right up
 

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Discussion Starter · #19 ·
Thanks again, for some reason I was thinking it sat behind the mint.
 
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