KZR's Bikes of the Month for 2024

wheel bearings shot?

  • Scirocco
  • Offline
  • Premium Member
  • Never change a running system
More
09 Feb 2020 12:03 #818900 by Scirocco
Replied by Scirocco on topic wheel bearings shot?

Zaddict wrote:
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...


This bearing application fit several bike models and some didn´t have a cable driven speedo drive. A spacer and the second seal will replace the speedo drive.
The following user(s) said Thank You: Zaddict

Please Log in or Create an account to join the conversation.

  • Scirocco
  • Offline
  • Premium Member
  • Never change a running system
More
09 Feb 2020 12:08 #818901 by Scirocco
Replied by Scirocco on topic wheel bearings shot?

Rick H. wrote:
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?


It´s dependent of speedo drive housing. Some has fixed Slots to fit into lower fork leg and some not.
The following user(s) said Thank You: Rick H.

Please Log in or Create an account to join the conversation.

  • Zaddict
  • Topic Author
  • Offline
  • User
  • Enjoying my Zaddiction!
More
09 Feb 2020 12:23 - 09 Feb 2020 12:25 #818905 by Zaddict
Replied by Zaddict on topic wheel bearings shot?

Scirocco wrote:
This bearing application fit several bike models and some didn´t have a cable driven speedo drive. A spacer and the second seal will replace the speedo drive.


Yeah, Steve mentioned he used only two seals as well. Then I take back my earlier comment that one seal was missing when I dug into the wheel. Both seals that should have been there were there.

Reinstalled the wheel and everything is working great, even with the janky speedo drive/receiver.

Some lessons learned:
1. Don't believe the hype that you can just use old bearings to seat the new ones. I think that would have worked fine on the left side of the wheel, but on the right side, the old bearing went so far into the recess that it was near impossible to remove. I spent two hours battling it. Ended up just popping both bearings out (old and new) with a tap from the other side with a brass drift. Then used the back side of a socket to seat the new bearing. I was going to try that initially but thought the socket needed to be the same size as the bearing. Not true - worked fine with a socket roughly the same size and I just took care to make sure it was contacting the outer race and tapped around evenly.

2. The factory manual suggests taking off the front fender when removing/reinstalling the wheel. Haynes doesn't. Now I understand why that's important - the front fender acts as a fork stabilizer and it's pretty much impossible to reinstall the wheel unless the fender is removed so the forks have enough give to fit the wheel plus spacers.

3. Speedo receiver doesn't need to be in perfect condition. As Steve mentioned, as long as it seats well in the housing and moves the gear it's probably OK.

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 12:25 by Zaddict.
The following user(s) said Thank You: SWest

Please Log in or Create an account to join the conversation.

More
09 Feb 2020 17:52 #818923 by loudhvx
Replied by loudhvx on topic wheel bearings shot?
In order to use an old bearing, you have to grind off some OD. Then it will just fall out.
The following user(s) said Thank You: Zaddict

Please Log in or Create an account to join the conversation.

More
09 Feb 2020 18:25 #818925 by Rick H.
Replied by Rick H. on topic wheel bearings shot?

Scirocco wrote:

Rick H. wrote:
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?


It´s dependent of speedo drive housing. Some has fixed Slots to fit into lower fork leg and some not.


Thanks for the response Scirocco, I only asked because I can't recall if the speedometer gear box rotated slightly on my bike before I took it apart to replace the wheel bearings. After reinstalling everything the gearbox is absolutely tight and doesn't move at all. I just wondered if that's how it is supposed to be or not. There is nothing on the fork leg inhibiting movement that I can see.
Rick H.

Rick H.

1977 Kawasaki KZ-1000A1

Please Log in or Create an account to join the conversation.

More
09 Feb 2020 19:59 - 09 Feb 2020 20:00 #818934 by 650ed
Replied by 650ed on topic wheel bearings shot?

Rick H. wrote: ..... There is nothing on the fork leg inhibiting movement that I can see.
Rick H.


You may want to double check just to be positive. The detent bump on the left KZ650-C1 leg is very small and easy to overlook. The pic below shows it. Ed


1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Attachments:
Last edit: 09 Feb 2020 20:00 by 650ed.
The following user(s) said Thank You: Rick H.

Please Log in or Create an account to join the conversation.

More
10 Feb 2020 10:12 #818967 by Rick H.
Replied by Rick H. on topic wheel bearings shot?
650ed: After doing some research I found in the Clymer Manual that there is a "stopping boss" on the speedometer gear housing that limits counter-clockwise rotation of the gear housing, but it does not lock the housing down per se that I can tell. I would assume that boss is there so you can't pinch the gear housing between the wheel and fork. However, does that mean that the housing is free to rotate somewhat when installed correctly?
Rick H.

Rick H.

1977 Kawasaki KZ-1000A1

Please Log in or Create an account to join the conversation.

More
10 Feb 2020 14:12 #818984 by 650ed
Replied by 650ed on topic wheel bearings shot?
It may be different on the KZ1000, but on the KZ650-C1 the speedometer sending unit has a bump cast into it (see photos below). When mounting the sending unit it should be turned counterclockwise until that bump hits the bump that’s cast into the fork leg. Once the axle is tightened the speedometer sending unit cannot turn any further because the bumps prohibit any further counterclockwise movement when braking and there’s nothing that tries to turn the sending unit in a clockwise direction. Ed




1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Attachments:
The following user(s) said Thank You: Rick H.

Please Log in or Create an account to join the conversation.

  • SWest
  • Offline
  • Sustaining Member
  • 10 22 2014
More
10 Feb 2020 14:48 - 10 Feb 2020 14:49 #818987 by SWest
Replied by SWest on topic wheel bearings shot?
The KZ 900/1000's too have that locator but it does not come in contact with the fork lowers.


I have to rotate the drive down a bit so the cable will clear the caliper needing a longer cable.

It is locked into place by the axle as it's a part of the whole system of spacers.



Once tightened by the clamps it cannot turn.
Steve
Last edit: 10 Feb 2020 14:49 by SWest.
The following user(s) said Thank You: Rick H.

Please Log in or Create an account to join the conversation.

More
11 Feb 2020 06:03 #819020 by Rick H.
Replied by Rick H. on topic wheel bearings shot?
Okay guys thanks to all who replied to my question(s) on this topic. In one of the manuals it states to turn the gear housing to the "2 o'clock position" and tighten the axle nut. So I guess they don't want the housing contacting the fork leg.
Rick H.

Rick H.

1977 Kawasaki KZ-1000A1

Please Log in or Create an account to join the conversation.

More
11 Feb 2020 08:22 #819033 by Mikaw
Replied by Mikaw on topic wheel bearings shot?

Rick H. wrote: In one of the manuals it states to turn the gear housing to the "2 o'clock position" and tighten the axle nut. .


When you rotate the speedo drive your making contact between the boss on the fork and the matching boss on the drive. It stops rotating when they touch and then tighten the axle nut.

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: Rick H.

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum

If you like KZR Please consider making a donation. Thank you.

KZRider is free, but not without cost.

Please consider chipping in a few bucks to help cover the cost of running the KZR servers.