Ford Excursion :: Master Cylinder Leaking And Winding Up Under Hydroboost Unit Via Gravity
Oct 21, 2014
I replaced my hydroboost unit about 10,000 miles ago. Today I noticed it was wet under the unit. Only this time, it's not red PS fluid, rather, it is brake fluid. So, I assume the master cylinder is leaking and winding up under the hydroboost unit via gravity. Or at least that's my theory.
Any way Rockauto lists 2 motorcraft master cylinders.
One is BRMC-26 for Hydroboost
The other is BRMC-27 for speed control.
I have obviously Hydroboost, but also have speed control.
View 4 Replies
Advertisement
Im replacing hydroboost and master cylinder and I cannot for the life of me get the master cylinder pushrod (which must be reused) out of the hydroboost unit. There is a spring, retainer and pushrod that I cannot get to release. I know it has to be very simple, I just cannot see how it releases.
View 2 Replies
Im replacing hydroboost and master cylinder and I cannot for the life of me get the master cylinder pushrod (which must be reused) out of the hydroboost unit. There is a spring, retainer and pushrod that I cannot get to release.
View 2 Replies
2007 F350... I noticed I have a small power steering leak where the master cylinder bolts onto the hydroboost. Is there a o-ring or seal between the two? or do I have to replace the hydroboost? Been looking online for a schematic but can't seem to find one.
View 13 Replies
I have leased my 2012 prius since April 2012 and about a year ago I began to notice the following noise originating from the master cylinder/ABS unit. The noise happens if I push the pedal firmly to the floor and occasionally during regular braking. The braking system seems to be working fine and regen braking is functional. I am wondering if this noise is a sign of an imminent failure.
Listen to audio recording....
View 19 Replies
I replaced my MC cap and gasket less than a year ago with a Dorman replacement and I'm leaking again, already. I don't want this to be an annual thing! Any good quality replacement? Is there any tip or trick to get the gasket to seal better?
View 9 Replies
Vehicle is an '86 Comanche 2.5L. Tested the battery at standing and charging, came to 12.8 standing and 14.7 charging. The alternator relay clicks, though that doesn't necessarily mean it's in good working order.
Any electrical load applied; headlights, taillights, hazards, blinkers, etc. kill the engine.
The clutch master cylinder is leaking onto the fuse box, though I moved it as best I could as I don't have the funds for a new master cylinder right now and I'm not sure which fuses, capacitors, and relays do what on the fuse box as the writing is barely noticeable.
View 4 Replies
I have power steering fluid leaking out of the bottom of the Brake master cylinder out of a round hole. Every time I pushed brakes it leaks a good amount of power steering fluid out. Why it would do this and is there a screw missing out of the hole or what?
View 6 Replies
My 2003 Toyota 4 Runner with 104K miles recently started showing a brake light off and on. The brake fluid reservoir was at the minimum level and there was some residue leaking from the bottom near a silver disc. Took it to a mechanic and was told it was most likely the master cylinder leaking brake fluid. Is this normal wear and tear or is it unusual in this vintage vehicle? I do not notice any brake slippage at this point. Should I take this to the dealer and ask why this master cylinder is faulty? I thought Toyotas were long life vehicles?
View 2 Replies
Found a puddle under the X last weekend. I thought it was the pan gasket when I got under her but much to my dismay, it was not. Fluid was actually seeping from between the extension unit and the tranny. Would this just be the gasket between the two?
View 5 Replies
I am thinking of doing a hydroboost setup on my ex??
View 2 Replies
Had a lot to do yesterday and had stock trailer hooked up and loaded with debris.
Got 120 miles away, stopped and got the groan from hydroboost/p/s system.
The hose from the pump to the hydroboost was leaking but it was the actual seal on the fitting that gave up rather than the rubber.
Could not find the seal but luckily the Irish place had the line in stock for a reasonable place.
Transmission got hot too backing up and puked out the front seal. I was doing a lot of twisting to get the trailer in the hole.
View 3 Replies
Early 70's Ford truck. The brake MC fluid is filled but not overfilled, and doesn't leak at all when the truck is parked. It can sit there for a month and never leak a drop, parked. But when I drive the truck, even just around the block, then park, and look inside the engine compartment immediately the brake MC is dripping brake fluid. It appears the leaking mode is by the fluid somehow jumping up and coming over the top edge of the MC when the truck is in motion or when the brakes are applied. All my diy'er years of replacing brake master cylinders on Ford Galaxies, VW Rabbits, Corollas, and this truck, I've never seen this kind of weird brake problem before. On this MC design it seems there's sort of a rubber baffle inside the lid of the MC, and that's present and accounted for.
View 17 Replies
I have a 2011 F150 FX4 Ecoboost w/ 37K. I recently had to have the master cylinder replaced along w/ all my brake pads because it was not disengaging the calipers properly, so all of my pads were prematurely worn and cracked. I was wondering, it seems like this shouldn't happen on a truck this "young".
View 1 Replies
...Is there anything special that needs to be done for brake bleeding after putting in a new master cylinder? I decided today to flush my system with my vacuum bleeder and now my pedal slowly falls to the floor at a light...No problems in a panic stop or otherwise, just falls to the floor slowly when braking...no leaks, so I'm assuming a master cylinder is an order....
View 14 Replies
Why the brake lines have 2 or 3 coils in them near the master cylinder? Makes it a real pain to work on anything down in that area. Always snags ratchets and stuff...
My brother and I were discussing it the other nite, and the conclusion we came up with was, the first guy ever who was installing a brake system had tubing that was a couple feet too long, and couldn't find a tubing cutter, so he coiled them up.
Then the next guy saw that and figured "hmm, so THAT'S how it's done", and so on... Kinda like the story about the lady who always cut off both ends of her ham before she put it in the broiler..
View 12 Replies
I have a '53 Ford F100. I have a PB conversion kit on it. The master cylinder & Booster are under the floor. I have used this setup for many years. Recently my master cylinder went bad. I replaced it with the same model. I bench bled it, and installed it. I also added a remote fill kit, since it's difficult to check & fill. Because of the booster, the master cylinder no longer sits under the hatch in the floor.
I got everything installed & connected, then bled all 4 wheels using a bleeder kit with an electric vacuum pump. The fluid runs clear & no bubbles, but I can't get a pedal by pumping. I have no leaks. I tried with the engine off, and running. I have felt soft pedals before, but I have no pedal at all, it just goes to the floor.
View 13 Replies
I was wondering if there was how to on doing the MC replacement? The brake pedal goes to the floor almost every time you press on the brake?
View 1 Replies
I tried to replace my brake master cylinder today but wasn't able to because of a plug
It's the black plug on the drivers side, the connector is upside down so I can't see how to unplug it I tried for an hour then got too frustrated I had to come inside
My Haynes manual says "unplug" obviously
View 1 Replies
ll, I changed out the master cylinder on my 2002 F-150, disk brakes front and back w/ ABS. Bleed all the air out and bench bleed the master cylinder. I have good pedal but the brake light will not go out.
View 6 Replies
Is it what it looks like? Why is it there, to pressure bleed the system through it rather than using a modified MC cap?
View 5 Replies
