Whistling Wheel Cylinder

[codyharper15]

I put new rubbers in my wheel cylinders and when I was adding in the brake fluid, one of the cylinders kinda whistles (or maybe the rubber rubbing on the cylinder) when compressing the brakes, but not when letting off.
Before I spend the time taking off my wheels again and diagnosing the noise, I was wondering if anyone knew what the noise was and if I should even worry about it.
Thanks!

 

[DieselBob]

Have you bleed the system ? Could be air in the line at the cylinder. That would be my fist idea. You can remove the tires/wheels and the little inspection cover on the brake drum to check for leaks at the wheel cylinder without pulling the hub/drum again.

 

[bones1]

Happy wheel cylinders will sometimes whistle

 

[SMOKEWAGON66]

"whistle while you work...."


...but seriously though...i would agree with dieselbob...air in the lines maybe...other then that I have no idea.

 

[codyharper15]

Ok sweet, I'll re-bleed that cylinder tomorrow. After going through all bleeding all the cylinders, the pedal is spongy all the way down, so I hope it is just air in that cylinder and not leaking! Thanks guys.

 

[SMOKEWAGON66]

.... After going through all bleeding all the cylinders, the pedal is spongy all the way down....

That sounds like air in the lines to me...moreso then the whistling.

 

[scoutmanadam]

are you pressure bleeding them, or doing it the old fashioned way. i have found on my deuce that it only really likes the pressure bleeding way with the spray bottle setup

 

[codyharper15]

I was doing it the two person way. I have a bug spray bottle accessible, but it doesn't have a pressure gauge on it. I didn't want to mess anything up pumping it with a too high of pressure, but I guess get a gauge I will try that.
The order I bled was this:
1. Airpack
2. Passenger Rear
3. Driver Rear
4. Passenger Middle
5. Driver Middle
6. Passenger Front
7. Driver Front.

I had my wife pump three times and hold, than I opened the screw, closed it, then she let off. When there was no more bubbles, I moved onto the next wheel. Just like the TM says. I might just give the pressure sprayer a try tomorrow.

 

[Wildchild467]

as long as she dosnt whistle when she runs!

i agree with the other guys... sounds like air.