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 Front fork maintenance, rusty steering bearings

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motor-timothy
GRiSO Capo
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motor-timothy

Posts : 349
Join date : 2016-12-20

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PostSubject: Front fork maintenance, rusty steering bearings   Front fork maintenance, rusty steering bearings Icon_minitime1Fri Apr 17, 2020 12:04 pm

Just wanted to share this. I got my front fork serviced this week, new fork oil + seals as well as new (conical) steering bearings as there had been some play in the front fork for a while now. First time ever that the bill was actually in line with what I had expected at 300€ but I digress...

The mechanic kept the ball bearings to show me. The top ones were pretty much fine, but the bottom ones were completely rusted. Shame I forgot to take a picture but it actually looked worse than this random pic from google (not even the same bearing type but just to make the point):

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The mechanic wondered whether the factory forgot to put grease on them or whether I had used a high pressure cleaner on the bottom of the steering stem. This I obviously didn't so (I only use a garden hose and even then don't point it at insensible parts like the ECU or bearings, but the previous owners could have done so) but considering the things I read about stingy grease usage by Moto Guzzi I suspect the former may be more likely.

On another note, the mechanic unfortunately sheered in half the clutch microswitch that allows the bike to start in gear with the clutch pressed, which I only noticed while riding home. Unfortunately the OEM switch costs like 100€, absolutely insane. Does anyone known an alternative source for the microswitch that doesn't cost me an arm and a leg (I'm not going to claim it at the workshop in these times of hardship).
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kiwi dave
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kiwi dave

Posts : 534
Join date : 2014-04-23
Age : 73

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PostSubject: Re: Front fork maintenance, rusty steering bearings   Front fork maintenance, rusty steering bearings Icon_minitime1Fri Apr 17, 2020 1:17 pm

motor-timothy wrote:


On another note, the mechanic unfortunately sheered in half the clutch microswitch that allows the bike to start in gear with the clutch pressed, which I only noticed while riding home. Unfortunately the OEM switch costs like 100€, absolutely insane. Does anyone known an alternative source for the microswitch that doesn't cost me an arm and a leg.

I replaced one on a Cali 1400; it was a SPDT type. I used a Burgess VL4S.

Whether the GRiSO uses the same one, you might want to compare parts lists.
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paulbrice
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paulbrice

Posts : 935
Join date : 2015-01-04
Age : 59

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PostSubject: Re: Front fork maintenance, rusty steering bearings   Front fork maintenance, rusty steering bearings Icon_minitime1Fri Apr 17, 2020 2:05 pm

Sadly I threw mine out together with the controls as ran out of space.......As a cheap alternative (especially if you are doing the clutch fluid, or switching to different controls)....replace the clutch line bolt at the handlebar with a pressure switch and wire it in....costs buttons.

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motor-timothy
GRiSO Capo
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motor-timothy

Posts : 349
Join date : 2016-12-20

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PostSubject: Re: Front fork maintenance, rusty steering bearings   Front fork maintenance, rusty steering bearings Icon_minitime1Fri Apr 17, 2020 2:19 pm

Thanks! Through rigorous searching I found a direct replacement!

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Since only the 'Actuator' part its broken I only ordered that, should work out and at <15€ including shipping and tax not too bad.
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kiwi dave
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kiwi dave

Posts : 534
Join date : 2014-04-23
Age : 73

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PostSubject: Re: Front fork maintenance, rusty steering bearings   Front fork maintenance, rusty steering bearings Icon_minitime1Fri Apr 17, 2020 3:57 pm

Thanks for the Radio Spares part number. I've noted this should my GRiSO ever require a replacement.
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