|
||
|
21st June 2017, 17:42 | #1 |
Avid contributor
MG ZT-T, R75 1.8T Tourer,R75 2,5 V6 Join Date: Sep 2016
Location: Bergen
Posts: 170
Thanks: 77
Thanked 21 Times in 18 Posts
|
Hard Brake Pedal
My brake pedal is very hard but brakes are good.
Any advise on the concerning the pedal? Thanks
__________________
This vehicle was the 6,701st ZT-T to run off the production line, out of 8,249 This vehicle was the 82nd ZT-T 160 (1.8T) to be made out of 118 This vehicle was the 1,309th ZT-T in XPower Grey (code: LEF) to be made out of 1,673 XPower Grey ZT-Ts |
22nd June 2017, 12:15 | #2 |
This is my second home
No more Rover Join Date: Apr 2009
Location: Barnsley, South Yorkshire.
Posts: 5,881
Thanks: 1,625
Thanked 1,308 Times in 998 Posts
|
|
22nd June 2017, 12:21 | #3 |
This is my second home
ZT260 #243 (resting) Join Date: May 2010
Location: Prestonpans
Posts: 22,480
Thanks: 650
Thanked 4,624 Times in 3,358 Posts
|
A hard brake pedal is usually indicative of a lack of or low vacuum in the booster. Don't know how that would tie in with the brakes seeming ok though.
|
23rd June 2017, 15:25 | #4 |
Avid contributor
MG ZT-T, R75 1.8T Tourer,R75 2,5 V6 Join Date: Sep 2016
Location: Bergen
Posts: 170
Thanks: 77
Thanked 21 Times in 18 Posts
|
Sorry,Im dyslectic(wordblind) and my english is no good at times
__________________
This vehicle was the 6,701st ZT-T to run off the production line, out of 8,249 This vehicle was the 82nd ZT-T 160 (1.8T) to be made out of 118 This vehicle was the 1,309th ZT-T in XPower Grey (code: LEF) to be made out of 1,673 XPower Grey ZT-Ts |
23rd June 2017, 15:38 | #5 |
This is my second home
Rover75 and Mreg Corsa. Join Date: Nov 2006
Location: Sumweer onat mote o'dust (Sagin)
Posts: 21,753
Thanks: 341
Thanked 3,660 Times in 2,924 Posts
|
Hello Seb,
The brake servo is connected to the inlet manifold from where it's evacuated. The servo can then provide the powered brake assistance. You have probably got an air leak in either the servo unit itself or in the pipework to the manifold. There's a check valve in the pipe which might have stuck. I'd strongly suggest not driving the car without full servo assistance to the brakes. You'll not stop it properly without. I'd also recommend getting a Haynes manual or the RAVE manual CD which cover all these issues. TC |
23rd June 2017, 16:13 | #6 |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
Location: Former Middlesex
Posts: 20,380
Thanks: 1,587
Thanked 3,749 Times in 3,181 Posts
|
Seb,
As you say that the brakes are good, but the pedal just feels hard, it could be that your brake fluid has absorbed moisture and needs replacing. Simon
__________________
"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
24th June 2017, 09:56 | #7 | |
MG ZT Join Date: Jan 2011
Location: Newcastle Upon Tyne
Posts: 20,151
Thanks: 3,565
Thanked 10,837 Times in 5,718 Posts
|
Quote:
TC has the advice I'd be inclined to follow here, I'd say a vacuum leak to the servo is the most likely scenario. Brake fluid that has absorbed moisture, is more likely to result in a sinking pedal following heavy braking when the fluid "boils" withing the pipework The OP may wish to check the non return valve in the pipework of the breather on the inlet manifold is working correctly, as positive pressure from the turbocharger will diminish the vacuum somewhat Brian Last edited by marinabrian; 24th June 2017 at 09:59.. |
|
|
|