Fluid leak at Master Cylinder

[2K6TBSS]

I have a leak between the fluid reservoir and the master cylinder. It looks like the front o-ring is leaking.

Is the o-ring replaceable, or should I just get a new master cylinder? It seems as though the rest of the system is working properly.

It's a 99 Denali, all stock brake stuff, except pads and rotors which are Napa brand parts.

 

[sumo]

YOur better off getting a new master. I dont even think you can get the orings anyways

 

[SunlitComet]

there are repair or reservoir kits that have the ring for about $20.

 

[2K6TBSS]

Thanks for the input. I have priced out new masters, and they aren't that expensive. I will give my local Napa Auto a call in the morning and see if they know of a rebuild kit.

@sunlitcomet
If Napa can't get the rebuild kit, do you know of a place local (I live in Discovery Bay) that I can order from? Or an online vendor?

 

[SunlitComet]

Oreily's/kragen is where I saw it.

---------- Post added at 09:18 PM ---------- Previous post was at 09:17 PM ----------

Dorman - Brake Master Cylinder Reservoir Kit

Part # : 42108
Line: MTM

• Help!
• Mfg. Defect Warranty
• Without Rear Disc Brakes Or Dual Rear Wheels

 

[ChiTahoe]

You can even try Autozone and pepboys, Napa should be able to cross that dorman number

 

[2K6TBSS]

Just looked at the Dorman part, and it looks like it's just the cap and gasket that fits into the cap.

Napa doesn't show a rebuild kit, so I am thinking it's going to be a new master.

 

[ChiTahoe]

You can prolly pop out the reservoir, take out the two o-rings and get replacements from Napa I would think.

Or buy the new m/c take out the o-rings and return it as a defect. < Don't recommend that option but just throwing it out there.

 

[SunlitComet]

The dealer has a reservoir kit that has the seals. It does cost more than a remaned unit from the local stores though.

 

[2K6TBSS]

I did some research today. A rebuild kit is like 30 bucks. I can get a reman unit from Napa for 40, and a brand new one for 50ish. I am thinking a new one is going to be installed this weekend.

I am thinking that I will be spending at least 20 bucks of my time doing the rebuild, as I would rebuild the whole unit, not just replace the o-rings.

 

[ChiTahoe]

Just try to to use the NEW unit that is NOT made in China, depending on the manufacturer. Seen lots of problems with them.