Rocky bleed question - Page 2 - GL1800Riders
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post #11 of 15 (permalink) Old 04-18-2017, 08:57 AM
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I just wasn't real impressed with the brake bleed. Used an air compressor with some kind of venturi set-up to draw the fluid out.

The mechanic's procedure is sort of OK and by the book per Honda regarding evacuating the old fluid and then drawing in the new. That is NOT "bleeding" though. Bleeding is the procedure whereby we attempt to remove any residual air after the new fluid is drawn in and in the case of the GL1800 consists of following a specific sequence from one bleeder to another using the lever/peddle to compress the system and the bleeder to allow the bubbles to escape. In the service manual, even when the brake vacuum tool is used, the bleeding procedure is to follow. BUT, when we are doing simple fluid replacement maintenance, it is easier and far less prone to introduce unwanted air into the system if we just use the bleeding procedure to purge the old fluid with new and forget the vacuum tool and emptying the system first. In the sequence, the Rocky steps are the last two steps in the sequence.


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post #12 of 15 (permalink) Old 04-18-2017, 09:35 AM Thread Starter
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Yes, I agree. This wasn't 'brake bleeding', it was brake fluid replacement. And someone did mention laying his hike over to replace a tire. I did the same thing after this procedure was done. Perhaps that contributes to the air problem.
Back to the original question: best to bleed it with a soft pedal(after sitting for several days) or pump it up and then bleed? I'm leaning towards the soft pedal. Maybe it doesn't make any difference......

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post #13 of 15 (permalink) Old 04-18-2017, 10:23 PM
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Originally Posted by bullet bob View Post
Yes, I agree. This wasn't 'brake bleeding', it was brake fluid replacement. And someone did mention laying his hike over to replace a tire. I did the same thing after this procedure was done. Perhaps that contributes to the air problem.
Back to the original question: best to bleed it with a soft pedal(after sitting for several days) or pump it up and then bleed? I'm leaning towards the soft pedal. Maybe it doesn't make any difference......
I don't think it makes a lot of difference, BB. After all, the first thing you do when you bleed the brakes is to put pressure on the system (i.e, pump it up) before you crack the bleeder open.

And, I strongly doubt that laying the ol' girl on her side to change the rear tire caused this. You didn't open the system to allow any air in when you laid'er down - that air was already in the system.

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post #14 of 15 (permalink) Old 04-18-2017, 11:20 PM
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I have never had a brake problem after the lay down method when doing my tyre.

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post #15 of 15 (permalink) Old 04-20-2017, 08:49 AM
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I have always pumped the lever or peddle to get firm condition, hold that pressure and then open the bleeder which allows the lever or peddle to collapse upon the grip or its bottom, hold that position as I quickly close the bleeder, the S-L-O-W-L-Y release the lever or peddle ---- repeat as necessary keeping reservoir from going empty. BUT, on that upper junction it is best to "break" it free a bit before starting, then gently close it before getting firm peddle and so on - otherwise that first attempt to break the tight fitting loose is more tedious. Does it make a difference? I dunno, I have always done it the way I describe.

















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