Brake Master Cylinder cap

Suspension, Brakes, Tires, Wheels etc..

Brake Master Cylinder cap

Postby Noelie84 » Mon Apr 24, 2017 7:01 am

Howdy all.
Wondering if anybody knows of a source for a new master cylinder cap and/or gasket for these trucks. I have the dual reservoir MC, and the gasket for the cap is leaking. It's not a bad leak, just an oz or two every couple of weeks. I can get a replacement MC (with a new cover and gasket included) from Rock Auto for about $30, but since the MC itself works perfectly it galls me to buy a replacement MC just for the leaky cover gasket :lol:


Image
1969 D100 w/an A833 & a 318
1984 W150 w/a 7.5 Fisher Speedcast, an NP435 & a slant six (because slow but unstoppable!)
Noelie84
Sweptline.ORG Member
Sweptline.ORG Member
 
Posts: 247
Joined: Thu Mar 05, 2015 10:07 am
Location: Vacationland
City: Wales
State: ME

Re: Brake Master Cylinder cap

Postby MadMC63 » Mon Apr 24, 2017 7:19 am

I've seen those at Year One's sight. If you don't have a problem with chrome you should be able to find one without much fuss.
1971 Dodge D100
So what's wrong with setting beneath a single pull string incandescent light bulb writing angry letters?
User avatar
MadMC63
Sweptline.ORG Member
Sweptline.ORG Member
 
Posts: 576
Joined: Sat Nov 14, 2015 12:16 pm
City: Rome
State: GA

Re: Brake Master Cylinder cap

Postby Noelie84 » Mon Apr 24, 2017 7:40 am

Are they on there? I never think of Year One because everything they've got listed for Mopars is for A, B, or E bodies. I'll take a look.


Thanks!
1969 D100 w/an A833 & a 318
1984 W150 w/a 7.5 Fisher Speedcast, an NP435 & a slant six (because slow but unstoppable!)
Noelie84
Sweptline.ORG Member
Sweptline.ORG Member
 
Posts: 247
Joined: Thu Mar 05, 2015 10:07 am
Location: Vacationland
City: Wales
State: ME

Re: Brake Master Cylinder cap

Postby wally426ci » Mon Apr 24, 2017 8:44 am

I may have a new one I can send you - let me look (I had a new napa cylinder that I waited too long to return...)
User avatar
wally426ci
Forum Moderator
Forum Moderator
 
Posts: 7910
Joined: Wed Dec 31, 1969 6:00 pm
Location: Earth
City: Cockeysville
State: MD

Re: Brake Master Cylinder cap

Postby Noelie84 » Mon Apr 24, 2017 9:16 am

wally426ci wrote:I may have a new one I can send you - let me look (I had a new napa cylinder that I waited too long to return...)


Ok. Don't go nuts looking; $30 isn't the end of the world, and I suppose that then I'd just have a spare MC on hand. :thinking
1969 D100 w/an A833 & a 318
1984 W150 w/a 7.5 Fisher Speedcast, an NP435 & a slant six (because slow but unstoppable!)
Noelie84
Sweptline.ORG Member
Sweptline.ORG Member
 
Posts: 247
Joined: Thu Mar 05, 2015 10:07 am
Location: Vacationland
City: Wales
State: ME

Re: Brake Master Cylinder cap

Postby coelcanth » Mon Apr 24, 2017 9:35 am

if you do end up splurging for a new MC,
maybe consider the type with the bolt on cap

i have the same style as you with the wire bail
and i have had no problems,
but people seem to think leaking from the cap is common with the wire type cap
and can be solved with the slightly newer bolt-on style

Image
coelcanth
Sweptline.ORG Member
Sweptline.ORG Member
 
Posts: 175
Joined: Thu Nov 21, 2013 2:49 pm
City: Brooklyn
State: NY

Re: Brake Master Cylinder cap

Postby Noelie84 » Mon Apr 24, 2017 10:07 am

Yeah, if I do go with a new MC I'll probably invest in one with the bolt. Seems more secure.
1969 D100 w/an A833 & a 318
1984 W150 w/a 7.5 Fisher Speedcast, an NP435 & a slant six (because slow but unstoppable!)
Noelie84
Sweptline.ORG Member
Sweptline.ORG Member
 
Posts: 247
Joined: Thu Mar 05, 2015 10:07 am
Location: Vacationland
City: Wales
State: ME

Re: Brake Master Cylinder cap

Postby PwrWgnDrvr » Mon Apr 24, 2017 12:42 pm

Ive never had a problem in 40 yrs with the wire clip type in any of my trucks, starting in 1978 with a 70 W200. I do get sick of wrenching out the bolts to check fluid on the earlier ones though.
PwrWgnDrvr
Sweptline.ORG Pioneer
Sweptline.ORG Pioneer
 
Posts: 5094
Joined: Wed Dec 31, 1969 6:00 pm
Location: Walnut Creek, CA

Re: Brake Master Cylinder cap

Postby Noelie84 » Wed Apr 26, 2017 6:17 am

PwrWgnDrvr wrote:Ive never had a problem in 40 yrs with the wire clip type in any of my trucks, starting in 1978 with a 70 W200. I do get sick of wrenching out the bolts to check fluid on the earlier ones though.

Prior to this, I've never had a problem with them either. But, it is annoying not being able to add any extra pressure to the cap to make up for the gasket shrinking. I suppose I could try pulling the wire bail and re-bending it. :thinking
1969 D100 w/an A833 & a 318
1984 W150 w/a 7.5 Fisher Speedcast, an NP435 & a slant six (because slow but unstoppable!)
Noelie84
Sweptline.ORG Member
Sweptline.ORG Member
 
Posts: 247
Joined: Thu Mar 05, 2015 10:07 am
Location: Vacationland
City: Wales
State: ME


Return to *SUSPENSION/BRAKE HELP*

Who is online

Users browsing this forum: No registered users and 2 guests