Deuce Master Cylinder

[dan2002dd]

I have been unable to find anyone talking about bleeding a new master cylinder for a deuce. Is there a bleeding procedure before installing it or is it just gravity bleed by opening the bleeder on the air pack? Next question is the new MC came with a rubber cap that is not vented, can this be used or must the MC have a vented cap?

 

[m715mike]

I just put a new master cylinder in my Deuce last weekend.

There is no need to bleed the master cylinder. The bleeding procedure starts at the air pack.

Throw away the rubber cap and use a vented cap.

 

[VPed]

Or in place of the vented cap, a remote fluid reservoir.

 

[dan2002dd]

So I just got a chance (and all the parts for the one man bleeder) to finish the bleeding process and found out the rubber cap and the old master cylinder cap are different sizes. I'll have to try to measure to see what I need but has anyone else run into this situation? Is there another cap that fits this smaller size that anyone knows of?

 

[dan2002dd]

Here's a picture of the caps.

 

[dan2002dd]

I finally got around to measuring the smaller cap today and it's 1-1/4". Anyone know of a replacement cap?

 

[GopherHill]

How about you drill and tap the plastic cap for a vent?

 

[dan2002dd]

I guess that's an option but I'd really like to use a metal cap even if I had to drill it out. I may go ahead drill this one and be done.

 

[dan2002dd]

I drilled a vent hole and bleed everthing last night with my wife's help. Of course I had to run the master cylinder dry one time before starting over, she was very excited about that. I'll check it later to verify it stayed pumped up, now I have to deal with a new belt for the compressor. I think the pulley is froze up so I may be back for more advice on that.