Author Topic: Front Won't Build Pressure  (Read 5476 times)

Offline connie_rider

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Re: Front Won't Build Pressure
« Reply #90 on: April 05, 2020, 10:03:17 am »
Yahoooooooooo!!!!!
Ride safe, Ted

Offline okrider

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Re: Front Won't Build Pressure
« Reply #91 on: April 05, 2020, 10:55:41 am »
Well, poop.. I left it with the ziptie on overnight, just went to check, and there was no brake pressure until I pumped it a couple times. I'm going to reverse bleed one more time, see if I get anything out, and then order a master rebuild kit..
'11 Black: Russel Day-Long, Mountain Runner, cage w/ highway pegs, 2Bros Slip-on, Helibars Horizon

Offline Rubber_Snake

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Re: Front Won't Build Pressure
« Reply #92 on: April 05, 2020, 11:09:17 am »
Well, poop.. I left it with the ziptie on overnight, just went to check, and there was no brake pressure until I pumped it a couple times. I'm going to reverse bleed one more time, see if I get anything out, and then order a master rebuild kit..

 :censored: 

I’d get the rebuild kit.  Need to rule that out. 
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Offline okrider

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Re: Front Won't Build Pressure
« Reply #93 on: April 05, 2020, 11:29:34 am »
Just ordered the rebuild kit.. Waiting on a big set of crush washers as well as I don't want to keep reusing the ones I got.. I'll replace all crush washers with the master rebuild once that arrives, in the mean time, going to check the calipers for any leaks..
'11 Black: Russel Day-Long, Mountain Runner, cage w/ highway pegs, 2Bros Slip-on, Helibars Horizon

Offline okrider

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Re: Front Won't Build Pressure
« Reply #94 on: April 05, 2020, 12:11:52 pm »
Weird thing is, it kept pressure overnight before I did a test ride, and the bike was on the center stand. Left it on the side stand with the wheel turned left and the lever ziptied after the test ride and then I had no pressure in the lever. This is so confusing..
'11 Black: Russel Day-Long, Mountain Runner, cage w/ highway pegs, 2Bros Slip-on, Helibars Horizon

Offline MAN OF BLUES

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Re: Front Won't Build Pressure
« Reply #95 on: April 05, 2020, 02:49:07 pm »
I'm just going out on a limb, and suggesting replacing ALL of the bleeder fittings with new ones, and re doing the bleed, normal bleed, not assisted bleed. I think your fittings are the culprit.

46 YEARS OF KAW.....  47 years of DEVO..

Offline okrider

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Re: Front Won't Build Pressure
« Reply #96 on: April 05, 2020, 04:21:30 pm »
See, that would make sense if I didn't have speed bleeders, I've been swapping them back and forth at the calipers unfortunately to be able to do a reverse bleed. The problem with that is that the plumbers tape on the bleeders is getting torn and it leaks at the caliper fittings when I loosen it to bleed. I bought some plumbers tape today to put on the speed bleeders for when I install them back on the calipers.

Is it possible for it to leak air while it's tight?
« Last Edit: April 05, 2020, 05:04:27 pm by okrider »
'11 Black: Russel Day-Long, Mountain Runner, cage w/ highway pegs, 2Bros Slip-on, Helibars Horizon

Offline connie_rider

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Re: Front Won't Build Pressure
« Reply #97 on: April 05, 2020, 05:17:36 pm »
MOB might have a good point.
Did the problem start after you installed the speed bleeders, or before?

Ride safe, Ted

Offline okrider

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Re: Front Won't Build Pressure
« Reply #98 on: April 05, 2020, 05:25:54 pm »
Problem started after I rebuilt the calipers, I believe I had the speed bleeders at that point as I bled the system it seems early February. I don't see any fluid leaks or anything, and there's no air coming out of the bleeders which makes me think it's not the bleeders that are leaking..

I guess I'll switch the caliper bleeders back to speed bleeders with new plumbers tape to see if it still has an issue while sideways..
'11 Black: Russel Day-Long, Mountain Runner, cage w/ highway pegs, 2Bros Slip-on, Helibars Horizon

Offline okrider

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Re: Front Won't Build Pressure
« Reply #99 on: April 08, 2020, 12:34:23 pm »
Update: Still waiting on the master rebuild kit. Still don't see any leaks. Bike holds pressure unless I go for a ride. If I go for a ride and come back and ziptie the lever, the pressure disappears an hour or two later. I just bled it while it's in this state, didn't see any air anywhere. Going to see what happens after I rebuild the master with new parts, if that doesn't work, going to install the used calipers I got..
'11 Black: Russel Day-Long, Mountain Runner, cage w/ highway pegs, 2Bros Slip-on, Helibars Horizon

Offline connie_rider

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Re: Front Won't Build Pressure
« Reply #100 on: April 08, 2020, 02:20:28 pm »
Fingers are crossed for ya Buddy.

Ride safe, Ted

Offline VirginiaJim

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Re: Front Won't Build Pressure
« Reply #101 on: April 08, 2020, 02:23:41 pm »
+1
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Offline Daytona_Mike

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Re: Front Won't Build Pressure
« Reply #102 on: April 09, 2020, 01:10:26 pm »
Same here... I am sure  it will be fixed with a master rebuild kit. I was on a Facebook site and what appeared to be the  same issue was fixed with a kit..  Good Luck!!
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Offline MAN OF BLUES

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Re: Front Won't Build Pressure
« Reply #103 on: April 09, 2020, 02:52:29 pm »
keep in mind "bleed down" on fluid pressure, differs from "air ingress'. and should be treated accordingly.. they are completely different, and come from differing issues.. 'member how I mentioned that air ain't coming in thru the master cylinder?, on another issue..? loss of pumping pressure can come from damaged seals, but as there is no "air" issue, it's just loss of "first pump" compression on fluid. Seal replacement is the cure.

46 YEARS OF KAW.....  47 years of DEVO..

Offline okrider

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Re: Front Won't Build Pressure
« Reply #104 on: April 09, 2020, 04:10:50 pm »
keep in mind "bleed down" on fluid pressure, differs from "air ingress'. and should be treated accordingly.. they are completely different, and come from differing issues.. 'member how I mentioned that air ain't coming in thru the master cylinder?, on another issue..? loss of pumping pressure can come from damaged seals, but as there is no "air" issue, it's just loss of "first pump" compression on fluid. Seal replacement is the cure.

Yes, there's a chance the calipers are faulty still for one reason or another. That's why I have used calipers sitting in the garage, in case the master rebuild doesn't fix it.

At this point, first pump pressure is lost only after riding the bike, which I think is very weird.. It might be because the pistons actually move back and forth and calipers might be leaking as the pistons come in and go out.. They work fine while on the bike, seem to have constant pressure. But once I'm home and I put the ziptie on, 2 hours later, lever feels empty

 I don't know at this point. I just want to ride my bike reliably again :)
« Last Edit: April 09, 2020, 04:48:23 pm by okrider »
'11 Black: Russel Day-Long, Mountain Runner, cage w/ highway pegs, 2Bros Slip-on, Helibars Horizon