Keith,
Thanks for letting me know about the grease. Good to have another opinion on this as I have never used it and was not sure. The KOYO bearing is an open bearing that came with the care OEM, so I know that it needs to be packed. Should not be an issue to pack it... as long as I put the right stuff in there!
Thanks.
Dan
Front Wheel Bearing Question
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DanT
- Top Notch Member
- Posts: 103
- Joined: Fri Dec 02, 2011 2:47 pm
- My tercel:: 83 Toyota Tercel SR5 Wagon
- Location: Ithaca, NY
Re: Front Wheel Bearing Question
Had no real problems pulling the steering knuckle out. Took about one hour. Headed to the shop in the morning to get the bearing pressed in.
My only concern is to make sure the bearing is pressed in correctly, as the FSM says, "Do not interchange the inner and outer races when installing".
Problem is this KOYO, "made in Japan" bearing looks identical on both sides. The only difference I can see is that one side has "KOYO" and has the part number stamp. So is that stamp suppose to face inward or outward?
The bearing in the knuckle now is an NSK... and the stamp is facing inward. Logic would suggest that the KOYO beaing goes in the same way... unless of course someone put the NSK in backwards and that is why is is shot now?
Can someone set the record straight on how to tell which is the inner and outer side. This KOYO sure looks symmetrical... except for the stamp.
Thank for the inside scoop!
Dan T
PS: Following came from an earlier post, but I never found a response to this question:
Posted: Sun Mar 06, 2011 5:08 pm
Hey sdoan,
I am installing the bearings without any major trouble when I hit the FSM note: "Do not interchange the inner and outer races when installing" in Step 4. I assumed the Koyo bearing (I'm installing the one you pictured) was symmetrical and did not matter how you installed it so I did not pay attention when I pressed in the races. I measured the inner-inner and inner-outer races and they sure seem the same to me. Is there a true inner-inner and inner-outer and should the lettering on the outer race face out or in. Does any of this matter? Thanks!
From Shawn's earlier post:
" I then inserted the hub with outer-inner race into the seal and outer side of the new bearing. Then I put it in the vice and pressed the inner-inner race into the bearing."
My only concern is to make sure the bearing is pressed in correctly, as the FSM says, "Do not interchange the inner and outer races when installing".
Problem is this KOYO, "made in Japan" bearing looks identical on both sides. The only difference I can see is that one side has "KOYO" and has the part number stamp. So is that stamp suppose to face inward or outward?
The bearing in the knuckle now is an NSK... and the stamp is facing inward. Logic would suggest that the KOYO beaing goes in the same way... unless of course someone put the NSK in backwards and that is why is is shot now?
Can someone set the record straight on how to tell which is the inner and outer side. This KOYO sure looks symmetrical... except for the stamp.
Thank for the inside scoop!
Dan T
PS: Following came from an earlier post, but I never found a response to this question:
Posted: Sun Mar 06, 2011 5:08 pm
Hey sdoan,
I am installing the bearings without any major trouble when I hit the FSM note: "Do not interchange the inner and outer races when installing" in Step 4. I assumed the Koyo bearing (I'm installing the one you pictured) was symmetrical and did not matter how you installed it so I did not pay attention when I pressed in the races. I measured the inner-inner and inner-outer races and they sure seem the same to me. Is there a true inner-inner and inner-outer and should the lettering on the outer race face out or in. Does any of this matter? Thanks!
From Shawn's earlier post:
" I then inserted the hub with outer-inner race into the seal and outer side of the new bearing. Then I put it in the vice and pressed the inner-inner race into the bearing."
Re: Front Wheel Bearing Question
The proper way to install the bearing is like a one piece bearing. I did my own and mine were like yours, not sealed but they were prepacked. I though I would separate the races and put them in one at a time, I was afraid that doing it all at once would damage the balls, but it quickly became apparent that it all goes in at once.
-
DanT
- Top Notch Member
- Posts: 103
- Joined: Fri Dec 02, 2011 2:47 pm
- My tercel:: 83 Toyota Tercel SR5 Wagon
- Location: Ithaca, NY
Re: Front Wheel Bearing Question
Keith,
All done. NOISE IS GONE! Mission accomplished.
Yes, everything you say here is in agreement with the approach the guy used to press my bearing in. When I picked up the KOYO bearing at NAPA I noticed it was pre-packed as you say here, so I was in error to think that it was dry. When we installed the bearing it all went in as one piece. Then we packed it with more wheel bearing grease.
Ed says these bearings are symmetrical and it does not matter which side faces out or in. (He put the letters on the same side as the old one just to make me feel good.) He used a 100 ton hydraulic press to push the old bearing out...when it did not come out with his smaller press. Then he used a more sensitive hand-operated press to put the new bearing in. Ed says that you can damage the balls if you use too much force on the install... and the larger press might do that on the install... so he did not use it there. As long as the bearing is up against the shoulder with the ring holding it down, he said that any slack will go away when you torque the axle nut. This made sense to me...
Maybe the FSM uses that more involved approach to put the races in seperately to avoid placing any pressure on the balls during the install. But apparently most people do not use that approach. It looks like you would need a lot more SSTs.
As for the comment in the FSM about not interchanging the inner and outer races on the install, I can only guess now that they wanted to make sure we did not install the hub into the steering knuckle facing the wrong direction? Dah. Othewise I still cannot see where that comment is coming from.
Thanks once again for the help and advice on this. It certainly was intimidating at first, but got more and more clear as people posted helpful comments to the list.
Good-to-go to pick up my son and his family at the airport at midnight tonight. He is going to be psyched to see this car... as there have been some major restorations both inside and out since he saw it last...
Great to have it running this well... and sounding so much better on the road now..
My best regards to all...
Dan
All done. NOISE IS GONE! Mission accomplished.
Yes, everything you say here is in agreement with the approach the guy used to press my bearing in. When I picked up the KOYO bearing at NAPA I noticed it was pre-packed as you say here, so I was in error to think that it was dry. When we installed the bearing it all went in as one piece. Then we packed it with more wheel bearing grease.
Ed says these bearings are symmetrical and it does not matter which side faces out or in. (He put the letters on the same side as the old one just to make me feel good.) He used a 100 ton hydraulic press to push the old bearing out...when it did not come out with his smaller press. Then he used a more sensitive hand-operated press to put the new bearing in. Ed says that you can damage the balls if you use too much force on the install... and the larger press might do that on the install... so he did not use it there. As long as the bearing is up against the shoulder with the ring holding it down, he said that any slack will go away when you torque the axle nut. This made sense to me...
Maybe the FSM uses that more involved approach to put the races in seperately to avoid placing any pressure on the balls during the install. But apparently most people do not use that approach. It looks like you would need a lot more SSTs.
As for the comment in the FSM about not interchanging the inner and outer races on the install, I can only guess now that they wanted to make sure we did not install the hub into the steering knuckle facing the wrong direction? Dah. Othewise I still cannot see where that comment is coming from.
Thanks once again for the help and advice on this. It certainly was intimidating at first, but got more and more clear as people posted helpful comments to the list.
Good-to-go to pick up my son and his family at the airport at midnight tonight. He is going to be psyched to see this car... as there have been some major restorations both inside and out since he saw it last...
Great to have it running this well... and sounding so much better on the road now..
My best regards to all...
Dan
Re: Front Wheel Bearing Question
Glad to hear its done. Sounds like Ed knows his stuff, you should keep him on your speed dial.