I feel like rebuilding a very old brake MC like yours is at best going to be
hit or miss, theres no telling how much corrosion is in there. I bet theres no
oversized cups or sleeves available so after you hone you might still need to
buy a replacement anyway...
For this I'd say buy a rebuilt, its not worth farting around rebuilding it
yourself.
-Curt
From: Randy Bennell via Mercedes <mercedes@okiebenz.com>
To: Mercedes Discussion List <mercedes@okiebenz.com>
Cc: Randy Bennell <rbenn...@bennell.ca>
Sent: Thursday, June 11, 2015 2:36 PM
Subject: [MBZ] trouble right here in River City
Winnipeg has rivers going north south - The Red and east west - The
Assiniboine so I thought that sort of fit.
My good old 76 115 300D had a hiccup this morning, which is totally
unlike it.
I was at a light when the car creeped ahead. I thought I had a senior
moment and had failed to keep my foot firmly planted on the brake.
I stepped harder and it sat there for the duration of the red light,
but on the next block, I stepped on the brake pedal and it essentially
sank to the floor. Not a good thing in traffic.
I drove it the few blocks home at lunch and put it back in the garage
but something is wrong. It brakes but not very hard and pumping the
pedal does not all that much to make it better.
It feels like when one presses on the pedal while another bleeds the
brakes. It just slowly descends until close to the floor.
I have looked where it was parked and do not see any puddles of fluid.
The resevoir does not look to be down.
I shall have to look a bit closer to see if there is something leaking.
If not, then I suspect the master cylinder is leaking internally.
Anyone have a better conclusion based upon the symptoms?
If so, is there a kit to repair or am I compelled to replace the whole
thing?
In either case, where would one best look for parts?
RB
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