[81cx500c]

Hey everybody, I have a 1981 Honda CX 500 custom; I am on an adventure to fix a slow oil leak; I have changed the engine casing seal and am changing the clutch cover seal right now; my friend told me it might also be coming from the cooling fan seal; I checked it out and it does look damp; however; I cannot get the cooling fan off to access what's behind it. any suggestions would be very helpful



thanks

 

[philbrewer]

The bolt size for the fan puller is M14x1.5.  It needs to be about 2" long, a bit less would be OK tho.



It's not the fan seal you are after. It's the front cam shaft seal.



Some people, including me, have used the front axle to do this. Careful though.

 

[jgrMeister]

The bolt size for the fan puller is M14x1.5.  It needs to be about 2" long, a bit less would be OK tho.



It's not the fan seal you are after. It's the front cam shaft seal.



Some people, including me, have used the front axle to do this. Careful though.

Thread the M14X1.5 bolt into the fan and it will push it off the shaft. It is press-fit on the shaft.

 

[Abes_CW]

Some people, including me, have used the front axle to do this. Careful though.

Quite confident that I've read previously that an 81 axle won't work, nor does a GL axle.

 

[bear351c]

I've always used the front axle on my 1980 CX. The back of the fan and the end of the cam are a tapered fit, so it only needs a small nudge to separate.

If it's cracked like mine was, change it out. They have been known to explode and take out your radiator.

 

[philbrewer]

Better yet swap it with an electric fan. My mod cost <$30 and no more worrying about the mechanical fan ever again.

 

[bear351c]

Good point.

 

[JiMi]

And here's just some photographic support (1978 CX500Z):

Or click HERE to watch the entire page on my website.

 

[81cx500c]

wow, thanks everybody for the replies; I'll give it a try

 

[Toehead]

The motor, She's a-nice and greasy!

 

[Shep]

The motor, She's a-nice and greasy!

You think that's bad!

 

[americanclassic]

I didnt even have to use a fan puller. Of course I later found the inner metal piece was split, and the fan probably would have gernaded in the near future.

 

[81cx500c]

Hey guys, I was looking online to find a puller bolt for the fan and found a M14X1.5 I was gonna order it but saw a R on the size; M14X1.5R didn't know if that affected anything and don't want to buy it and have it not work here is a picture of what I found http://www.trendtimes.com/cross-type-flywheel-puller.html

 

[philbrewer]

Hey guys, I was looking online to find a puller bolt for the fan and found a M14X1.5 I was gonna order it but saw a R on the size; M14X1.5R didn't know if that affected anything and don't want to buy it and have it not work here is a picture of what I found http://www.trendtimes.com/cross-type-flywheel-puller.html

Whoa. Save your money and use the front axle.

 

[jgrMeister]

Hey guys, I was looking online to find a puller bolt for the fan and found a M14X1.5 I was gonna order it but saw a R on the size; M14X1.5R didn't know if that affected anything and don't want to buy it and have it not work here is a picture of what I found http://www.trendtimes.com/cross-type-flywheel-puller.html

gulp. i spent $2 at a local parts store for a simple bolt. it was an industrial supply store.

 

[Lima41]

Same here. I spent a couple bucks at Ace Hardware to get a bolt. It worked great.

 

[Cobram]

An air chuck works well too. Can't remember if it needed to be shimmed with a washer or not, but it works.

 

[81cx500c]

Thanks, I'll try those

 

[Zegwin]

Yah I spent .79 st ACE Hardware on a two inch bolt to pull my fan.