No Brakes!!

[c4ever]

Well that's not totally true.:eyerole
This is on the 85.
Here's how it goes. step on the brake, good pedal, stops as well as any vette will (if you know what I mean). The problem is the pedal will start to drop to the floor eventually engaging the brake warning light . No fluid leaks, master is topped off. I just dropped the car off at home and won't get into it until I get home but I'm thinking master cylinder.

Near the house at a stop sign I just held the peddle down and went to the floor gradually feeling as if it were leaking fluid but it isn't.
Once gain, Master Cylinder???


Carlo

 

[69MyWay]

Sounds like you nailed it.

I guess this means (if you don't get it fixed quick) that you won't bring the C4 to Octobervette????

 

[c4ever]

Thanks Chris. You got it. Figured something always comes up. I'll order one right now and get it in tonight.

Funny, I was checking the plugs and wires on the Benz yesterday and noticed I need wires. I think I did even more damage when I remeoved them to inspect, so now I'm driving on 5 cylinders the one day I needed a backup.

It's like Roseann Roseanna Danna says "there's always somethin"

:L :L :L

Time for a new master and flush. See ya in Kissimmee. I'll get with ya before the end of the week.

Carlo

 

[vigman]

Master Cylinder

I'll bet your seeping at the back of the master!

DO NOT forget to bench bleed FIRST!

Vig!

 

[Zektor]

Yup, my '82 had the very same problem. It was also worse when the braking system was cold.

Exactly the same as yours, slam the brakes and it will lock all four wheels etc, but slowly and gradually the pedal would end up on the deck. Pumping the pedal seemed to harden it up a bit.

Turned out to be the brake master cylinder (I had no leaks either!). I guess the rubbers had hardened and where letting fluid through!!!

Change the master cylinder and I am sure everything will be good!

Cheers
Dazza

 

[82RL]

I noticed my 82 leaking out the rear of the master cyl. AlsoI noticed that in loose rock I step on the brakes and the front brakes stop and the rear wheels keep trying to turn. Is this connected to the master cyl. leak

 

[Zektor]

82RL,
Your are right. The master cylinder in the '82 is a dual circuit affair. I believe the front section is for the front brakes and the rear fluid pot is for the rear.

Cheers
Dazza

 

[c4ever]

Thanks for the quick responses. This forum rules

I ordered a replacement but I do need to save the reservoirs as the rebuilt doesn't have any. Any tricks to removing them?

Thanks again guys,
Carlo

 

[jeepie]

What you describe is almost always the master cyclinder, If I remember correctly, I don't think the reservoirs should be a problem.

 

[Yoda]

Hey Carlo... Does Mia repair Corvettes too? :L :L

Good luck, wish me and the dawg could make it

BudD

 

[c4ever]

Yeah jeepie. Just took a good yank. I can't stress enough to everyone to flush these systems regularly. The garbage I found in the bottom of my reservoirs And I thought I took good care of my care:duh
She'll be back on the road tonight along with a tune up for the benz and a fan clutch for the Trooper.

A couple of Coronas are in order.

Oh! Let's make that two Coronas and a Cadilac Margherita for Bud and the DawG. I can only imagine if I lived close to you guys. I'd never get anything done.:L :Twist :L :Twist :L :Twist

Carlo

 

[Redbob]

I ordered a replacement but I do need to save the reservoirs as the rebuilt doesn't have any. Any tricks to removing them?

Just replaced my M/C two months ago, same symptoms as yours, absolutely no external leakage.
Got a rebuilt unit locally for $82 (exchange) that works perfect.

Removing the reservoirs goes like this: YANK them off! Sorta tilt and pull - hard.
But before you do that, look down into the bottom of the reservoir carefully to see exactly how the rubber retaining collar looks when it's properly seated.

Reinstalling them on the new master without the "factory tool" involves doing just the opposite of what the shop manual recommends, and it's not easy. It's critical that the lip on the rubber retaining collar engages fully on both the master and on the reservoir. You might find a blunt piece of wood (like perhaps a tongue depressor) helpful in pushing the seal into place after installing the reservoir. Put seal ring on master first, press the reservoir down over the rubber, then force the rubber collar into its' proper place.

You'll see what I'm talking about when you get there.

You can "bench bleed" on the car using the clear plastic hoses supplied with the M/C. With luck, no further bleeding will be required.

Have fun!
- R

 

[c4ever]

Right on the money Redbob. The resevoir seals were a pain in the butt and I wasn't real happy with the final result but it seems to be fine. I did bleed to flush out the system. Brakes are like new now.
Thanks to all for the feedback.
Carlo