How much PSI does a brake line have?
Most of the metal brake lines burst around 15,000 psi. The typical full-lock operating pressures are 900–1,000psi (69 bar) with manual brakes and 1,400-pluspsi ( 96 bar) with power-assisted brakes.
Why does my Astra brake pedal travel so long?
The front brake pads on my Astra have just been replaced and although the car stops as normal, the pedal travel seems longer / softer than before. The Haynes manual warns that master cylinder problems can be created by pushing the piston back.
Why do I have excessive brake pedal travel?
Excessive brake pedal travel happens when you feel your pedal sinking rapidly while braking, or sitting lower than usual when activating your vehicle’s brakes. This can happen due to wobbly discs knocking pistons back or air in the braking system. Performing DIY brake repair to fix excessive brake pedal travel can be a tedious task.
What does it mean when your brake pedal is sinking?
What Is Excessive Brake Pedal Travel? Excessive brake pedal travel happens when you feel your pedal sinking rapidly while braking, or sitting lower than usual when activating your vehicle’s brakes. This can happen due to wobbly discs knocking pistons back or air in the braking system.
What to do about long brake pedal travel after pad change?
Try bleeding them. And check how much free play you have on the brake pedal. You should have about ¼” or so. This can be adjusted quite easily at the master cylinder/brake pedal pushrod. I had this same problem on an Astra after a front pad change.
What causes brake pedal to travel too far before stopping?
When a brake pedal starts to travel too far before stopping, there is a problem. By design, brake pedal height and travel differ slightly from one vehicle to another. Something is wrong, when the height or travel of the brake pedal changes.
Where does the low brake pedal come from?
In the next 5 minutes, you will have identified whether the issue causing your low pedal is in the front of your brake system or rear. Nearly every vehicle has a rubber hose at the center of the rear axle that attaches to a block on the rear end.
Why is my brake pedal soft on my 2004 Silverado?
I am having trouble trying to fix a low and soft brake pedal on my 2004 Silverado. I have already replaced the master cylinder, flushed and bled the brake lines at all four wheels. Still the pedal is low and soft. Does anyone know what it could be? There is no loss of brake fluid any where. The master cylinder reservoir is not losing fluid.
What’s the correct order for brake pedal travel?
In traditional systems, you begin with the longest line in the circuit first, and go from the right rear, left rear, right front, and left the front. In diagonally split systems, the order is right rear, left front, left rear, and right front. Flush out the bleeder valves, and finally, remove the air from your master cylinder.