Question about 2000 Pontiac Bonneville

1 Answer

Brakes how hard is it to change a master cylinder

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 96 Answers

It is not dificult at all really, you disconnect the metal lines and cap them with rubber line caps then remove the 2 bolts that go into the rear base of it and pull it straight out. the critical part is properly following the included instructions with the new master cylinder to properly bleed it BEFORE you put the new one back on.

Posted on Jul 13, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

The front drivers side break keeps locking. I have replaced the caliper and now when I pump it no fluid is coming out from the line.


Did air get into the master cylinder? If you can, try bleeding the master cylinder. The fact that you aren't getting any fluid out of the line suggests that the master cylinder isn't pumping fluid.

Master cylinders are (usually) on a split circuit system - that is, the front left brake is on the same line as the rear right. The front right brake is on the same circuit as the rear left.

A point to be aware of is when bleeding brakes/doing brake work and if the master cylinder runs dry, is that a seal inside the master cylinder can fail/twist over and not pressurise that particular line, even though it may pressurise the opposite brake line.

I'm in the UK. I have a 1998 Jeep Grand Cherokee 4 litre, which I am slowly rebuilding. Three weeks ago I fitted new front brake rotors, new front callipers and pads. I've been rebuilding cars for over 40 years now and have done countless brake overhauls.

.. and could I get a hard pedal after the job was completed? I must have bled the brakes three times a day for a week and couldn't get a brake pedal. I phoned a full time mechanic I know - he came and tried to bleed the brakes three times and couldn't get a hard pedal.

That's when you think 'The master cylinder was working before I started the job so it must be still working now'.

I fitted a brand new master cylinder and because some parts for older jeeps are hard to come by in the UK, I fitted a second hand proportioning valve. When I bled the brakes again the pedal became rock solid. Fixed.

You're probably fed up with your braking problem now ... and apparently this 'no fluid/brake pedal' is more common than you may think.

Try bleeding the master cylinder if you can. If you suspect that it isn't fully working - try an overhaul kit which is cheaper than a new master cylinder.

As for changing the proportioning valve .. that's your decision. My brakes now work though the truth is I don't actually know which was at fault as I changed both the master cylinder and proportioning valve at the same time. Maybe both were at fault, for whatever reason. I genuinely don't know.

The positive aspect is that you are doing your own work and know what you're doing. You're saving on labour charges.

Apr 18, 2016 | 1998 Dodge Grand Caravan

1 Answer

1993 4wd. Why aren't brakes working?


Does the brake pedal go to the floor? Or does it stay up, and is hard to push...? Did you bleed the master cylinder? Also, you will need to bleed all 4 wheels connection to the brake wheel cylinders...you must start with the rear, farthest from the master cylinder, then other rear, then front farthest from the master cylinder, then other front...the bleeding of each line is a must, since you switched the master cylinder.

Sep 14, 2015 | GMC Sierra 1500 Cars & Trucks

1 Answer

I have a 2000 mazda 323 with a manual transmission. i have already change the clutch kit but the gear is still hard to shift


Check the hydraulic clutch operation. This is a clutch master cylinder with a reservoir on the firewall, and a clutch slave cylinder down on the bell housing of the transmission, with a steel tube running from the master to the slave cylinder. When clutch pedal is depressed, hydraulic fluid (brake fluid) is forced from the master to the slave. The slave cylinder should push out a little plunger that contacts the clutch fork lever-pushing it forward to engage the clutch.
Add brake fluid to the reservoir if needed. Watch the plunger on the slave cylinder: if it moves little, or not enough, try bleeding the slave from the bleeder valve. They are bled just like brakes. If bleeding doesn't help, your clutch master or the slave may need replacing. The master cylinder, like a brake master, has internal seals that hold hydraulic pressure, so force can be applied to the plunger on the slave cylinder.

Dec 09, 2013 | Mazda 323 Cars & Trucks

1 Answer

Brake pedal hard


Hi P, The most usual cause of the brake pedal action becoming hard is a defective return seal in the brake master cylinder. When the brakes are depressed fluid is pushed into the wheel cylinders, activating the brake pads and shoes. After a few operations of the braking system the fluid fails to return to the master cylinder and with each further action the brakes become tighter. After the vehicle stands for some time the pressure gradually releases and frees the brakes. Have the brake master cylinder checked. It's good policy to replace the brake fluid once or twice a year as part of the major service. Regards John

Nov 28, 2013 | Cars & Trucks

1 Answer

Is it hard to change out the master Brake cylinder ore is it beter to reper it on a Toyota Rav4


that is your abs unit doing that . is the abs brake light. this is the link to my garagetps://www.facebook.com/TedsRepairs11_26_2012_11_01_49_pm.png

Nov 26, 2012 | 1998 Toyota RAV4

1 Answer

I think i need a master cylinder in my 1994 pontiac bnneville? How hard/easy it it to replace myself. I can purchase ne for around 50-60 dollars.


Yes it is not that hard to replace.

57435341
REMOVE OR DISCONNECT
  1. Retainer and electrical connector from fluid level sensor.
  2. Drain brake fluid front mister cylinder reservoir.
  3. Reservoir hose from master cylinder. Plug hose to prevent fluid loss and contamination.
  4. Brake pipes from master cylinder. Plug open pipes to prevent fluid loss and contamination.
  5. Two attaching nuts.
  6. Master cylinder.
  7. Reservoir, if it is to he used on replacement master cylinder.
INSTALL OR CONNECT
  1. Reservoir onto master cylinder, as needed.
  2. Master cylinder on to power booster.
  3. Attaching nuts. Tighten to 27 Nm (20 lb. ft.).
  4. Brake pipes. Tighten brake pipe fittings to 15 Nm (11 lb. ft.).
  5. Reservoir hose onto master cylinder.
  6. Fill master cylinder reservoir to full level mark using only Delco Supreme 11 Brake Fluid, or equivalent DOT 3 brake fluid.
  7. Electrical connector to fluid level sensor, secure with retainer.
  8. Bleed hydraulic system.
  9. Recheck fluid level in reservoir
113253687

Mar 09, 2011 | 1994 Pontiac Bonneville

1 Answer

I have excessive brake travel, and a hard time 98 chevy blazer


Two issues...
The brake booster has a ruptured diaphragm. Replace the booster.
It is located under the hood between the brake master cylinder and the firewall.

Your master cylinder may be leaking fluid internally past the plunger.
Have it examined when you change the booster.

Oct 12, 2009 | 1998 Chevrolet Blazer

Not finding what you are looking for?
2000 Pontiac Bonneville Logo

Related Topics:

62 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

60792 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...