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rbm
Mad Brick Rider
Joined: 02 Jun 2009
Posts: 115
Location: Toronto
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 Posted: Sun Oct 04, 2020 12:53 pm Post subject: Readily available replacement for K1100 front brake switch |
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Hi,
My K75 is fitted with a K1100 front-end. I found out that a small brake fluid leak in my K1100 front master cylinder had caused the brake switch to melt and fail. I searched for an OEM replacement but the Ebay offerings were very pricey. The K1100 front brake switch is a readily available microswitch, able to be sourced at many online electronics parts supplier, and costs just a couple dollars.
A compatible replacement is an Omron Electronics SS-5GL13 (Datasheet).
It has the exact same dimensions and mounting hole placement, making it a drop-in replacement. It will be necessary to clip the lead from the old switch and solder it onto the new one. The Green/Black wire goes to Common terminal and the Grey/Blue wire goes to NC terminal.
Equivalent Switches
There are a number of different manufacturers that have similar microswitches and you'll have to search the datasheets to make sure the dimensions are the same. Critical dimensions are package dimensions (19.8mm x 10.2mm x 6.4mm) and hole spacing (9.5mm) and hole diameter (2.3mm). You may have to bend the lever a bit to get it to work reliably; I had to.
E-switch MS0850503F010S1A (Datasheet)
C&K LCA10150T09SC (Datasheet)
Panasonic ABS1412509 (Datasheet)
Honeywell ZM50E10E01 (Datasheet)
Dimension Diagram
_________________
- Robert
1987 K75 @k75retro.blogspot.ca
2011 Moto Guzzi V7 Racer
Last edited by rbm on Sun Oct 04, 2020 1:49 pm; edited 1 time in total |
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Grunter
Flying Brick Rider
Joined: 30 Sep 2015
Posts: 368
Location: North East England
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| Posted: Sun Oct 04, 2020 1:32 pm Post subject: Alternative spares |
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This is an interesting new source for alternative spares which I will add to my list.
One other is the fuel pump fitted to the K1100 and later K75 bikes. It is a pump from a 1990 Volkswagen car. Same part number and fitted straight into my K75 which already had been modified to fit the later pump.
The cost of the new pump is about 1/3rd less than the one for BMW bikes. This pump may also be used on BMW cars it may be worth checking makers part numbers
_________________
1997 K1100LT
1994 R1100RS |
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Acentistaha
Brick Rider
Joined: 28 Sep 2017
Posts: 48
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| Posted: Wed Nov 04, 2020 2:15 am Post subject: |
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| That is very interesting, I found the right source through here. Thank you |
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John Clauss
Flying Brick Rider
Joined: 04 Apr 2003
Posts: 730
Location: Robesonia, PA
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| Posted: Mon Jan 04, 2021 3:24 pm Post subject: Re: Alternative spares |
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| Grunter wrote: |
One other is the fuel pump fitted to the K1100 and later K75 bikes. It is a pump from a 1990 Volkswagen car. Same part number and fitted straight into my K75 which already had been modified to fit the later pump.
The cost of the new pump is about 1/3rd less than the one for BMW bikes. This pump may also be used on BMW cars it may be worth checking makers part numbers |
This is what I apparently need. Do you know the model of VW car, I am assuming gas and not diesel, or are they all the same?
_________________
1997 K1100LT
1975 R75/6
It will bring you so close to nausea, it will make you sick! - Big Al |
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Jim
Site Admin
Joined: 17 May 2003
Posts: 3840
Location: WHERETHEFUNNEVERENDS
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| Posted: Mon Jan 04, 2021 4:24 pm Post subject: Replacement fuel pump (stock) |
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Euromotoelectrics has reasonably priced pumps for K bikes - in the $100 range instead of the $400+ BMW wants.
https://www.euromotoelectrics.com/category-s/1777.htm
_________________
Jim
1997 K1100LTSE 94,000 - has gremlins!
1995 R100RT Classic 16,650 crashed - repairing
1992 K75RTP 46,000
1992 R100R 24,000 - FOR SALE
"We shall not all die, but we shall all be changed." |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10085
Location: Bumf***, WA
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| Posted: Tue Jan 05, 2021 12:55 am Post subject: |
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Why do you need a brake switch?
Brakes are for cowards! 
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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InfamousRiding
Joined: 05 Jan 2021
Posts: 8
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| Posted: Wed Jan 06, 2021 4:49 am Post subject: |
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| Flying Duck wrote: | Why do you need a brake switch?
Brakes are for cowards! |
I disagree. Breaks are for rational people. |
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John Clauss
Flying Brick Rider
Joined: 04 Apr 2003
Posts: 730
Location: Robesonia, PA
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| Posted: Thu Jan 07, 2021 9:04 am Post subject: Re: Replacement fuel pump (stock) |
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I can get a VW fuel on Rock Auto for less than $40. Just need to know which model.
_________________
1997 K1100LT
1975 R75/6
It will bring you so close to nausea, it will make you sick! - Big Al |
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Grunter
Flying Brick Rider
Joined: 30 Sep 2015
Posts: 368
Location: North East England
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| Posted: Thu Jan 07, 2021 11:30 am Post subject: Re: Alternative spares |
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| John Clauss wrote: | | Grunter wrote: |
One other is the fuel pump fitted to the K1100 and later K75 bikes. It is a pump from a 1990 Volkswagen car. Same part number and fitted straight into my K75 which already had been modified to fit the later pump.
The cost of the new pump is about 1/3rd less than the one for BMW bikes. This pump may also be used on BMW cars it may be worth checking makers part numbers |
This is what I apparently need. Do you know the model of VW car, I am assuming gas and not diesel, or are they all the same? |
Volkeswagen Golf petrol engine. I also believe the same pump with slightly different part number is fitted to the smaller Audi cars too.
_________________
1997 K1100LT
1994 R1100RS |
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