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crocktherock
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« on: October 17, 2010, 09:10:52 PM » |
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I recently bought my first Valkyrie and I've been changing the fluids. I noticed that the clutch reservoir was low so I was planning to fill with DOT 4, but there's a load of mustard color paste in the bottom of the reservoir. Could this be the result of someone using the wrong brake fluid (e.g. DOT 3)? If so, would it be enough to remove with paper towel, and flush with DOT 4?
Also, what purpose does the foam float serve, and the black diaphram?
BTW, the clutch works fine.
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Valkpilot
Member
Posts: 2151
What does the data say?
Corinth, Texas
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« Reply #1 on: October 18, 2010, 05:29:10 AM » |
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DOT 3 and DOT 4 are compatible, so mixing the two will not cause what you're seeing.
More likely, the fluid is just old and has absorbed a lot of moisture. That yellow mung is showing up in a lot of bikes that have either set for a long time or not had their fluid changed regularly.
My advice would be to clean out the master cylinder and flush/bleed the system with good fluid.
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VRCC #19757 IBA #44686 1998 Black Standard 2007 Goldwing   |
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Robert
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« Reply #2 on: October 18, 2010, 06:51:19 AM » |
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Just did a bike with the same colored stuff in the reservoir. Sucked it out cleaned it with a rag topped up with fresh fluid and flushed the rest of the system out and no problems. It just as said moisture in the fluid.
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“Some people see things that are and ask, Why? Some people dream of things that never were and ask, Why not? Some people have to go to work and don’t have time for all that.”
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hubcapsc
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Posts: 16787
upstate
South Carolina
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« Reply #3 on: October 18, 2010, 07:26:32 AM » |
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It is "normal" to find boogars in clutch and brake fluid when it is way past time to change it... the boogars are the difference between "past time" and "way past time"...   -Mike |
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fudgie
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Posts: 10613
Better to be judged by 12, then carried by 6.
Huntington Indiana
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« Reply #5 on: October 18, 2010, 05:28:13 PM » |
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I'd leave the parts mentioned in there. damifiknow what the foam is for but the rubber is like a gasket to hold pressure/seal so your not sucking in air.
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 Now you're in the world of the wolves... And we welcome all you sheep... VRCC-#7196 VRCCDS-#0175 DTR PGR |
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sandy
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« Reply #6 on: October 18, 2010, 05:34:46 PM » |
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If you have a vacuum brake bleeder tool (Mity Vac), pull all the old fluid out. Flush with alcohol and then refill with DOT4 and bleed. The alcohol absorbs leftover moisture and pulls it out.
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gordonv
Member
Posts: 5763
VRCC # 31419
Richmond BC
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« Reply #7 on: October 18, 2010, 09:18:09 PM » |
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Any kind of alcohol? Cheap rubbing, methanol, or?
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1999 Black with custom paint IS   |
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Ricky-D
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« Reply #8 on: October 19, 2010, 06:28:39 AM » |
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That crud is an emulsion that forms from combining the brake fluid with water and other contaminants.
The white foam piece that is in the master cylinder reservoir is an aid to help you see the level of the fluid in the reservoir. With clean fluid it is difficult to see the fluid level since the fluid is clear and the floating foam piece aids in that respect.
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2000_Valkyrie_Interstate
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sandy
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« Reply #9 on: October 19, 2010, 09:34:49 PM » |
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I find good results with isopropyl but have also used denatured alcohol too.
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