110 W/Brake Problem

emmodg

Well-known member
Apr 17, 2006
4,273
1
The '85 110 we have is leaking brake fluid out of the brake pressure warning sender at the bottom of the brake pressure relief valve which is bolted to the firewall under the clutch MC. I replaced the pressure warning sender as I thought it was the problem but now the new one seems to be leaking enough to make the pedal go to the floor. I thought this sender was bolted to a brake manifold but I guess it's actually got some kind of a bias valve in it. Could it be getting stuck and allowing pressure to force fluid out of the pressure warning sender "thingy"? All of the brake lines are dry. Does the truck need this manifold/pressure valve? Could I run a bias valve instead?

Thanks!
 
JB-some would tell you that the braking systems are so carefully engineered that one should not be making changes willy-nilly.

I'm not one of those!

If I'd get my head out of where it doesn't belong, I'd find your parts for you and get them ordered in.

Yeah, I know, I'm a loser.

I'd think youcould use any Rover proportioning valve that was consistent with the braking system on your 110, ie disc/drum, disc/disc, ABS/non-ABS.
 

emmodg

Well-known member
Apr 17, 2006
4,273
1
I do have a D1 valve I could steal off a truck and try. Will the valve work with disc/drum combo?

I got your email PT - Is that a stock 110 valve you priced?
 
emmodg said:
I do have a D1 valve I could steal off a truck and try. Will the valve work with disc/drum combo?

I got your email PT - Is that a stock 110 valve you priced?

It's the closest I could find based upon the info you provided.

I don't think those I have (used) are trustworthy enough even for testing purposes.

Curiously, I've sold two for DIs this week, must be the week for brake valve problems.
 

Velocewest

Well-known member
May 13, 2007
377
0
PDX Orygun
That pressure sensor isn't really necessary. It's one of those "belt and braces" things. My 110 van hasn't got one, it just has the low fluid sensor on the reservoir cap.
 

MC22958

Well-known member
Mar 13, 2005
259
0
Virginia
some of the early Defenders did not come with them at all. One of my Defenders had one and the other didn't.