New Problem, Leaky MC Lid, Need Help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Stocker** · 05-18-2018, 06:11 PM

Have had a rash of problems lately with the K20. Yesterday the front MC reservoir started leaking fluid around the lid and I can't figure out why. It's not overfilled, and it's never leaked before. MC is just a few years old. I wire brushed the inside of the lid and replaced the (rubber?) seal but no help. That's the reservoir for the rear brakes. The shoes and wheel cylinders were new a year or two ago.

I'm a bit frustrated here, been dealing with other issues too, and I have no clue why brake fluid is leaking around the lid. Any ideas? Thanks, guys.

demian5 · 05-18-2018, 06:28 PM

Yeah that sucks. I have a brand new one that has done that since new. Eventually the front reservoir was empty.

68panelman · 05-19-2018, 08:20 AM

Had this problem also once. I had to bend the metal bars out, to give more down force on the lid. It worked well for me.

05-18-2018, 06:11 PM	#1
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,692	New Problem, Leaky MC Lid, Need Help Have had a rash of problems lately with the K20. Yesterday the front MC reservoir started leaking fluid around the lid and I can't figure out why. It's not overfilled, and it's never leaked before. MC is just a few years old. I wire brushed the inside of the lid and replaced the (rubber?) seal but no help. That's the reservoir for the rear brakes. The shoes and wheel cylinders were new a year or two ago. I'm a bit frustrated here, been dealing with other issues too, and I have no clue why brake fluid is leaking around the lid. Any ideas? Thanks, guys. __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

05-18-2018, 06:28 PM	#2
demian5 Registered User Join Date: Aug 2016 Location: Lake Forest, CA Posts: 2,177	Re: New Problem, Leaky MC Lid, Need Help Yeah that sucks. I have a brand new one that has done that since new. Eventually the front reservoir was empty. __________________ "Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC

05-19-2018, 08:20 AM	#3
68panelman Registered User Join Date: Jan 2011 Location: Delaware and Long Island, New York Posts: 3,456	Re: New Problem, Leaky MC Lid, Need Help Had this problem also once. I had to bend the metal bars out, to give more down force on the lid. It worked well for me.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.