Cleaning the K75 - K-Bikes.com - Excellence in Motion
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post #1 of 11 (permalink) Old Sep 10th, 2010, 3:52 am Thread Starter
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Cleaning the K75

I'm in the process of getting my license to ride. The other day my teacher showed me how to clean a bike: He took it to a self service washing station, essentially he sprayed everything (except the chain) with soapy water, and the sprayed well with water.

Having had a closer look at my K75C, I see it's quite filthy, especially in the area behind the driveshaft and in front of the rear wheel, there seems to be a cavity full of dirt and grit. Can I just spray this down with soap and water? Any other particular areas I should be careful with?

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Frode
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post #2 of 11 (permalink) Old Sep 10th, 2010, 9:23 pm
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I wouldn't really recommend a high pressure spray. Maybe occasionally but you can force water into bearing seals and electrical connections where it will eventually corrode. Get a good spray on degreaser, brush, garden hose and a nice Saturday afternoon. Advantage of this method is that you get to know you bike more intimately.

1987 RED K75S
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post #3 of 11 (permalink) Old Sep 11th, 2010, 7:11 am
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+1 don't use high pressure spray
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post #4 of 11 (permalink) Old Sep 11th, 2010, 10:23 am
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The times I did use a commercial car-wash on my last bike, I would stand about 4 to 5 meters away from the bike, to reduce the pressure to something closer to a garden hose.

But on the BMW, there are several areas (especially electrical connections and the dashboard gauges) which can easily be contaminated with water. So I have just been using a garden hose and fingertips to get pressure.
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post #5 of 11 (permalink) Old Sep 11th, 2010, 10:52 am
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There are also breather caps on the final drive and transmission that can let water in if you're not careful.
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post #6 of 11 (permalink) Old Sep 11th, 2010, 5:09 pm
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+2 on no pressure washing. I save up old toothbrushes for cleaning my bikes, both combustion and pedal

===================
/1957 BSA A10 Spitfire Scrambler
/1960 BSA A10 Super Rocket (basket)
/1981 Suzi GS650
/1988 BMW K100LT (in Lisbon)
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post #7 of 11 (permalink) Old Sep 12th, 2010, 2:01 pm Thread Starter
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Right, no high pressure spray The self-service spray I mentioned wasn't high pressure, I believe.

Anyhow, toothbrushes... I bought a set of purpose-made "toothbrushes" the other day: steel, copper (I suppose) and nylon brushes. I gather that the steel and nylon brushes are for maximum and minimum force, respectively. However I have a sneaking feeling that there's some specific purpose for the copper brush because I've seen numerous similar copper brushes. Is it safe to use on steel/aluminum/etc. surfaces?
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post #8 of 11 (permalink) Old Sep 12th, 2010, 3:21 pm Thread Starter
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Quote:
Originally Posted by frodef
Anyhow, toothbrushes...
Just checked, the brush is brass, not copper.
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post #9 of 11 (permalink) Old Sep 13th, 2010, 6:56 am
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Shortly after I bought my K75S I washed it (soapy water, garden hose) then the digital gear indicater started misbehaving. I have since found out that the sensor is somewhere at the rear of the gearbox near the swingarm and is not particularly waterproof, at least in my case, so be careful around there!
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post #10 of 11 (permalink) Old Sep 16th, 2010, 11:01 pm
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And then there is the fan motor.

Phil Mars

1984 K100RT
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