RGS swingarm bearing parts

murphus

murphus

Senior member
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Lost in the Midwest
Just pressed out the swingarm bearings on my 83 RGS. Still functional, but I'm repainting the frame (and welding in the suggested strengthening gussets), and at 75,000 miles seems prudent. Anyway, at the innermost end of the bearings was a seating washer, similar to as is fitted under the steering head bearings. The parts diagram at Laverda Paradies shows an "O-ring spacer" in this position, but no washer. The washer would make sense, helping the bearing seat on the small shelf in the swingarm tube. Does anyone know which is supposed to be there?
Richard
 
cupped washer is supposed to be in there with the cup side facing inwards
when both cupped washers are in place the cups support the inner spacer tube and hold it in position
same principal as on the wheels

 
See below.  Dunno why Andy describes it as an 'O' ring.  It isn't - or at least, wasn't.

Roger at OCT has the real thing, btw. Part # 33 116 340.

 

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  • Swing arm.jpg
    Swing arm.jpg
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The washer is only just held in place by the bearing race, it has no locating function regarding the bearing, only the spacer tube.  The bearings are pressed into the swingarm flush with the outer edge of the pivot tube, often a little bit of movement can be felt at the washer. 

So, quite different to the steering bearings, as there is (normally) no axial load on the swing arm bearings.

piet
 
Many thanks all for the information. I hadn't thought about what keeps the inner spacer from moving when I posted. On the subject, any tips for reinstall of needle bearings? I had to heat the swingarm a fair bit to drive them out. For the new bearings, I planned to toss them in the freezer for a few hours.
Richard
 
I use a threaded bar, washers and turn the nut on one end to ease them into place. Not easy.
 
Thanks Grant, that's that's exactly what I envisioned. My post was slightly truncated, I should have added a word for clarity: I'd thought about that approach, Grant, as I don't have a suitable press.

Have a safe New Years all. Life will be slow here in the Midwest; overnight temperature is predicted to be 9 below zero fahrenheit. No riding this New Year's Day!
Richard
 
murphus said:
Thanks Grant, that's that's exactly what I envisioned. My post was slightly truncated, I should have added a word for clarity: I'd thought about that approach, Grant, as I don't have a suitable press.

Have a safe New Years all. Life will be slow here in the Midwest; overnight temperature is predicted to be 9 below zero fahrenheit. No riding this New Year's Day!
Richard
Click to expand...

Colder than the freezer... :D

piet
 
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