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 Post subject: steering head bearing removal
PostPosted: Fri May 11, 2018 7:03 pm 
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Joined: Mon Feb 25, 2008 11:44 am
Posts: 345
Location: Northern Ireland
Any tips on removing the bearing cup from the bottom of the steering head in the frame? The top one is relatively easy as its possible to get a drift onto the back of the cup because it protrudes. The lower one is kind of flush with the inside of the stem...


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 Post subject: Re: steering head bearing removal
PostPosted: Sat May 12, 2018 2:33 am 
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Joined: Sun Oct 28, 2012 6:38 pm
Posts: 791
Location: Spielberg, Austria
Take a piece of flat steel, cut it that it fits into the bearing (as deep as possible) and spot weld it (1 small spot on each side is enough)
Protect the rest of the frame from welding ?spatter? (is it the right word?)

Now you can remove the bearing.

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My bikes:
RD500 YPVS 1GE
RD350 YPVS 31K 1985
Honda CBR 1000 RR SC57
Yamaha R1 RN04


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 Post subject: Re: steering head bearing removal
PostPosted: Sat May 12, 2018 5:36 am 
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Joined: Sat Jun 14, 2008 7:16 am
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Try a tool like this.

Slide it in and a couple of taps with a hammer and done.

Image


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 Post subject: Re: steering head bearing removal
PostPosted: Sat May 12, 2018 3:26 pm 
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Location: Spielberg, Austria
@Smoker: RZV frame?

The RD/RZ steel frame is different, you can`t use this tool as the frame inner diameter is smaller than the bearing.
Stupid design...

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My bikes:
RD500 YPVS 1GE
RD350 YPVS 31K 1985
Honda CBR 1000 RR SC57
Yamaha R1 RN04


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 Post subject: Re: steering head bearing removal
PostPosted: Sat May 12, 2018 5:21 pm 
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Joined: Mon Feb 25, 2008 11:44 am
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Location: Northern Ireland
..i tried speedfreak's suggestion and it worked ok. Not pretty but it was difficult to weld to the cup

while i had them out i ground out some notches to make it easier next time!!

thanks guys


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 Post subject: Re: steering head bearing removal
PostPosted: Sun May 13, 2018 12:27 pm 
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Speed Freak wrote:
@Smoker: RZV frame?

The RD/RZ steel frame is different, you can`t use this tool as the frame inner diameter is smaller than the bearing.
Stupid design...

Yes, I changed the races in my RZV frame. Have not tried the RZ frame.

I can see what you mean by looking at the above photo. I wonder what the service manual says?


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 Post subject: Re: steering head bearing removal
PostPosted: Sun May 13, 2018 3:30 pm 
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Location: Spielberg, Austria
"Pitting/damage => replace" :mrgreen:

No word about how to do it.

_________________
My bikes:
RD500 YPVS 1GE
RD350 YPVS 31K 1985
Honda CBR 1000 RR SC57
Yamaha R1 RN04


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