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1977 KZ650 speedometer gear housing. How to remove grease seal?

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18 Jan 2021 16:13 #841968 by Kozman011
Hello everyone. Refurbing the front wheel on my 77' KZ650. While I have the hub apart, I'm replacing the bearing s and seals. The one seal is in the housing that has the speedometer gear. How do I get this seal out? The center tube where the axle runs through prevents me from getting any leverage on the inside of the seal. Already broke one of my curved picks trying to get it out. Also, what grease should I use to repack the gear inside the housing? Thanks for any help you can send my way!

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18 Jan 2021 17:30 #841977 by Mikaw

1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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18 Jan 2021 17:38 #841978 by Mikaw
You can run a screw into the seal, use a small pry bar to leverage the seal out

1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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19 Jan 2021 03:42 #841991 by Kozman011
Ahh, thanks. Wil give that a go!

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19 Jan 2021 10:27 #842017 by Kozman011
Thanks gents. Grease seal is out. I want to clean up the old grease out of the gear housing. I've picked out as much as I can. What can I use, solution wise, to get the rest out, and what grease would you recommend? Normal wheel bearing grease?

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19 Jan 2021 19:49 #842047 by Mikaw
You can soak it in kerosene. Harder solidified grease will take a couple soaks, brush of loosened up stuff in between. I buy all my cleaning brushes from Harbor Freight.

1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
The following user(s) said Thank You: Kozman011

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29 May 2021 20:08 - 29 May 2021 20:09 #849228 by DOHC

Mikaw post=841978You can run a screw into the seal, use a small pry bar to leverage the seal out
 

I went after this seal today.  I don't know what you did with a screw.  That wasn't working for me.

I was searching amazon for all kinds of oddball pullers and eventually just went and got a cheap standard seal puller.  I didn't think it would work, but it came right out.  I just cocked it a bit sideways around the center boss.

Man it was very satisfying to clean all that old gunk and grease out of there.  I'm glad I went for it.

 

'78 Z1-R in blue , '78 Z1-R in black, '78 Z1-R in pieces
My dad's '74 Z1
'00 ZRX1100
Last edit: 29 May 2021 20:09 by DOHC.

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30 May 2021 06:23 - 30 May 2021 09:45 #849261 by martin_csr
By DOHC:  .... Man it was very satisfying to clean all that old gunk and grease out of there.  I'm glad I went for it.

Same here.  I got the All-Balls-Racing wheel bearing kits because they included the seals.  If not for the seals, I probably never would have done anything to the speedo drive gearbox. doh.  It ended up being pretty darn easy.  Next time, I'm considering removing the roll pin to service the pinion properly as well. 

Grease.  I use Belray waterproof grease. "salt water proof". auto/motorcycle/marine use. for wheel bearings, bushings, etc. plus it's a nice green color, perfect for Kawasakis. hee.
Last edit: 30 May 2021 09:45 by martin_csr.

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03 Jun 2021 21:06 - 04 Jun 2021 18:13 #849580 by DOHC

Grease.  I use Belray waterproof grease. "salt water proof".

​​​​​​ The more I learn about grease, the harder it gets to pick one.  Is wheel bearing grease compatible with the rubber shaft seal?  As far as I can tell, they are not generally rubber compatible.  But I don't know what the shaft seal is made from. Of course there are like 20 different common elastomers that it could be.

I have rubber compatible silicone grease (silglyde and silaramic), but they don't seem right for rotating metal parts.  I have wheel bearing grease (Castrol and mobile 1 synthetic), but wonder about the seal. And about 30 other things that are called grease.  Thoughts?

'78 Z1-R in blue , '78 Z1-R in black, '78 Z1-R in pieces
My dad's '74 Z1
'00 ZRX1100
Last edit: 04 Jun 2021 18:13 by DOHC.

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04 Jun 2021 06:20 - 04 Jun 2021 06:22 #849596 by martin_csr
The Bel-Ray stuff is an aluminum complex grease & the tub says it "won't swell seals or o-rings."  
According to Valvoline, these types of greases have the characteristic green color.
I couldn't find an msds on the product I used & the label doesn't have any composition info (Bel-Ray MC-11).
Last edit: 04 Jun 2021 06:22 by martin_csr.

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  • Those Doe-Hawks really go!
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04 Jun 2021 11:49 #849611 by DOHC

The Bel-Ray stuff is an aluminum complex grease & the tub says it "won't swell seals or o-rings."  
 
Interesting.  I can't find any mention of o-rings or seals in any of the documentation, or in photos of the tub.  Seems like they must have changed the text on the tub.

www.belray.com/wp-content/uploads/2019/02/Waterproof-Grease.pdf

www.tingue.com/uploads/Bel-Ray%20Waterproof%20Grease.pdf

 

'78 Z1-R in blue , '78 Z1-R in black, '78 Z1-R in pieces
My dad's '74 Z1
'00 ZRX1100

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