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K100-forum.com » Technical, repair and troubleshooting » Frame, fairing and wheels » Crusty Front Master Cylinder

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1Back to top Go down   Crusty Front Master Cylinder Empty Crusty Front Master Cylinder Sun Nov 17, 2024 4:37 pm

naut023

naut023
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Crusty Front Master Cylinder Image10
Noticed I had a leaking front master cyclinder, so I have removed it and it looks like it is leaking from the piston seal.

When I pulled the tank off, I was met with this horror show. Is this already too far gone or if it cleans up ok is a kit still a chance?


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1985 K100RS
    

2Back to top Go down   Crusty Front Master Cylinder Empty Re: Crusty Front Master Cylinder Sun Nov 17, 2024 5:18 pm

jbt

jbt
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RIP


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Let us enjoy the transient delight
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3Back to top Go down   Crusty Front Master Cylinder Empty Re: Crusty Front Master Cylinder Sun Nov 17, 2024 10:09 pm

Dai

Dai
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^^^ This Sad


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1983 K100 naked upgraded to K100LT spec after spending time as an RS and an RT
1987 K100RT
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1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
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4Back to top Go down   Crusty Front Master Cylinder Empty Re: Crusty Front Master Cylinder Mon Nov 18, 2024 12:22 am

JimmyD

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I believe it’s too far gone for repair and requires replacement. 🤨

    

5Back to top Go down   Crusty Front Master Cylinder Empty Re: Crusty Front Master Cylinder Mon Nov 18, 2024 10:33 am

tg4360

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And after you install the new one, change your brake fluid on the regular to prevent this from happening again.

    

6Back to top Go down   Crusty Front Master Cylinder Empty Re: Crusty Front Master Cylinder Mon Nov 18, 2024 2:00 pm

naut023

naut023
active member
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Thanks all, will order a replacement  Sad

Looks like it might have been sitting for longer than I thought, don't have a good history on this bike.


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1985 K100RS
    

7Back to top Go down   Crusty Front Master Cylinder Empty Re: Crusty Front Master Cylinder Mon Nov 18, 2024 2:11 pm

TacKler

TacKler
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naut023 wrote:Crusty Front Master Cylinder Image10
Noticed I had a leaking front master cyclinder, so I have removed it and it looks like it is leaking from the piston seal.

When I pulled the tank off, I was met with this horror show. Is this already too far gone or if it cleans up ok is a kit still a chance?

Technically speaking, I would say it's rooted.


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Red 1991 K75S
    

8Back to top Go down   Crusty Front Master Cylinder Empty Re: Crusty Front Master Cylinder Tue Nov 19, 2024 6:53 pm

Rolf E

Rolf E
Silver member
Silver member
The comments above are probably correct but you have noting to lose if you do a clean-up and inspect it. The cylinder will probably need some honing but have a look and decide then.

I just did one on a machine I want to restore. It also looked bad but after cleaning it, it will still do the job.


__________________________________________________
1991 K100RS 16V VIN: K100RS 0200487 Engine# 104EB 3790 2230 Charcoal 166000km
1991 K100RS 16V VIN: K100RS 6408910 Engine# 104EB 2290 2130 Pearl White 217000km
1991 K100RS 16V VIN: K100RS 0200487 Engine# 104EB 1091 2053 Pearl White 77000km
1989 K75s VIN: K75s 0108752 Engine# 753EA42894104
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K100-forum.com » Technical, repair and troubleshooting » Frame, fairing and wheels » Crusty Front Master Cylinder

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