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wheel bearings shot?

  • Zaddict
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08 Feb 2020 16:38 - 08 Feb 2020 16:41 #818856 by Zaddict
Replied by Zaddict on topic wheel bearings shot?
Got a chance to dig in today. The left side was missing a seal. The speedo receiver was chewed up and the left side bearing was a disaster. Not sure if there's cause and effect there, and if so which way it goes. I managed to install new bearings but will hold off on putting the wheel back on until I get a new speedometer receiver.

Here's the gory video -




*edit - left side, not right
1990 Zephyr zr550 B1
Wiseco 615cc kit
zx550 cams
SPII ignition system
Kerker stainless steel race exhaust with 1.5" competition baffle
K&N Air Filter...
Last edit: 08 Feb 2020 16:41 by Zaddict.

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  • SWest
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  • 10 22 2014
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08 Feb 2020 17:53 #818860 by SWest
Replied by SWest on topic wheel bearings shot?
The speedo drive is supposed to have play. When you put it in the transfer assy, does it turn as you turn the drive
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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08 Feb 2020 18:05 #818862 by Zaddict
Replied by Zaddict on topic wheel bearings shot?

SWest wrote: The speedo drive is supposed to have play. When you put it in the transfer assy, does it turn as you turn the drive
Steve


It does turn the drive. It's not so much the play that I'm concerned about, but the damage to the tangs of the receiver. If you look in the video I give the receiver a tap in a couple places to point out where the metal is sheared off or cut.
1990 Zephyr zr550 B1
Wiseco 615cc kit
zx550 cams
SPII ignition system
Kerker stainless steel race exhaust with 1.5" competition baffle
K&N Air Filter...

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08 Feb 2020 18:20 #818863 by SWest
Replied by SWest on topic wheel bearings shot?
Looks like it was installed in the wrong position. It can be cleaned up and reused. The seal keeps it centered. The kit should have a new one.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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08 Feb 2020 18:28 #818864 by Zaddict
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SWest wrote: Looks like it was installed in the wrong position. It can be cleaned up and reused. The seal keeps it centered. The kit should have a new one.
Steve


Yeah? Well I'd certainly rather do that and be riding tomorrow than have to wait for the part.
1990 Zephyr zr550 B1
Wiseco 615cc kit
zx550 cams
SPII ignition system
Kerker stainless steel race exhaust with 1.5" competition baffle
K&N Air Filter...

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  • SWest
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  • 10 22 2014
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08 Feb 2020 19:01 #818866 by SWest
Replied by SWest on topic wheel bearings shot?
Close up of the drive?
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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08 Feb 2020 19:53 - 08 Feb 2020 19:53 #818872 by Zaddict
Replied by Zaddict on topic wheel bearings shot?
viola!
1990 Zephyr zr550 B1
Wiseco 615cc kit
zx550 cams
SPII ignition system
Kerker stainless steel race exhaust with 1.5" competition baffle
K&N Air Filter...
Attachments:
Last edit: 08 Feb 2020 19:53 by Zaddict.

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  • SWest
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  • 10 22 2014
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08 Feb 2020 20:10 #818874 by SWest
Replied by SWest on topic wheel bearings shot?
The sealing surface still looks good. I guess all you can do is try it and see what happens. It was the other side that failed on me.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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09 Feb 2020 08:33 - 09 Feb 2020 08:35 #818888 by Zaddict
Replied by Zaddict on topic wheel bearings shot?
Yeah, the drive does move smoothly in the speedo housing once the seal is installed, and I imagine once the axle is tightened it will be in there securely. I'll give it a shot.
1990 Zephyr zr550 B1
Wiseco 615cc kit
zx550 cams
SPII ignition system
Kerker stainless steel race exhaust with 1.5" competition baffle
K&N Air Filter...
Last edit: 09 Feb 2020 08:35 by Zaddict.

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09 Feb 2020 09:03 - 09 Feb 2020 09:03 #818890 by Zaddict
Replied by Zaddict on topic wheel bearings shot?
Ah, now I'm confused. The All Balls bearing kit came with three new seals. One clearly goes on the right side hub, the other goes in the speedo assembly. I don't see any place for the 3rd, largest seal. Doesn't look like there's a 3rd seal in the parts diagram either. Maybe it's relevant to other bikes that use the same bearings but not to mine...
1990 Zephyr zr550 B1
Wiseco 615cc kit
zx550 cams
SPII ignition system
Kerker stainless steel race exhaust with 1.5" competition baffle
K&N Air Filter...
Attachments:
Last edit: 09 Feb 2020 09:03 by Zaddict.

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  • SWest
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09 Feb 2020 09:10 #818891 by SWest
Replied by SWest on topic wheel bearings shot?
Not the same bike but mine had only two as well. Might be meant to fit the range of bikes.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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09 Feb 2020 10:13 #818897 by Rick H.
Replied by Rick H. on topic wheel bearings shot?
Not trying to hi-jack the thread, but I have a relevant question. When the axle nuts are tightened to spec and locked down with the clamps is there supposed to be any movement in the speedometer gear housing, or is it in fact locked down tight?
Rick H.
Rick H.

1977 Kawasaki KZ-1000A1

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