How to remove the power brake booster - 2001 Pontiac Montana

We need to know exactly what you are trying to do. Are you removing the Power Brake Booster? and you want to disengage the pedal? or do you want to remove the bracket that holds the Power Brake Booster in place so that you can pull out the Power Brake Booster?

There should be two or four mounting bolts accessed from under the dash. Usually the booster has studs and you remove the nuts.

Click here Jeremy to see how to replace brake booster.

Check the help link below and follow the procedure:----

How to replace Brake Power Booster?

http://repairhelpcenter.blogspot.in/2012/02/how-to-replace-brake-power-booster.html

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Where is Power Brake Booster located on Car?

http://howtobyme.blogspot.com/2011/12/where-is-power-brake-booster-located-on.html

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How to Replace Power Brake Booster on 1996 GMC Jimmy?

http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-power-brake-booster-on.html

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These will help.
Thanks.

here you go...

The power brake booster is a tandem vacuum suspended unit. Some models may be equipped with a single or dual function vacuum switch which activates a brake warning light should low booster vacuum be present. Under normal operation, vacuum is present on both sides of the diaphragms. When the brakes are applied, atmospheric air is admitted to one side of the diaphragms to provide power assistance.
REMOVAL & INSTALLATION

1994-97 Models
See Figures 1 and 2

1. Apply the parking brake and block the drive wheels.
2. Remove the master cylinder-to-power brake booster nuts, then reposition the master cylinder and combination valve out of the way; if necessary, support the master cylinder on a wire to prevent damaging the brake lines.

When removing the master cylinder from the power brake booster, it is not necessary to disconnect the hydraulic lines, therefore the brake system should not have to be bled.

1. Disconnect the vacuum hose from the power brake booster.

Fig. Fig 1: Common power brake booster attachment

1. From under the dash, remove the retainer and washer from the brake pedal on 1994 utility models. On all other models, remove the retainer and brake switch from the brake pedal.
2. Disconnect the pushrod from the brake pedal.
3. From under the dash, remove the power brake booster-to-cowl retaining nuts.
4. Back under the hood, remove the power brake booster and the gasket from the cowl.

To install:

1. Position the booster to the cowl using a new gasket.
2. Install the bo oster retaining nuts and tighten to 16 ft. lbs. (22 Nm) 1994 utility models, 24 ft. lbs. (32 Nm) on 1994 pick-up models and 27 ft. lbs. (36 Nm) on all 1995-97 models.
3. Connect the pedal pushrod and install the washer or switch and the retainer.
4. Connect the vacuum hose.

Fig. Fig. 2: Checking the piston booster rod using the gauge tool

1. For all vehicles cover ed in this guide, gauge the booster rod:
   1. Apply 25 in. Hg (85 kPa) of vacuum using a hand held vacuum pump or apply maximum engine vacuum.
   2. Chec k the maximum and minimum rod lengths using J-37839 or an equivalent pushrod height gauge.
   3. If the piston is not within limits, install a service adjustable piston rod and adjust it to the correct length.
2. Reposition the master cylinder and combination valve bracket to the booster studs, then secure using the retaining nuts. For details, please refer to the master cylinder procedure located earlier in this section.
3. Start and run the engine, then check for proper booster operation.

The brake power booster is held onto the firewall by 4 nuts. To find these nuts, look under the passenger side of the dashboard, near the brake pedal. You also have to remove the pushrod that goes from the power booster to the brake pedal. The brake master cylinder also has to be removed to remove the power booster.
I hope this helps
Matt

1. Step 1 Mark the brake lines coming into and out of the master cylinder using masking tape and permanent marker.
   
2. Step 2 Orient the tube wrench so that it grabs the end of the nut by first sliding it over the brake line.
   
3. Step 3 Pull the brake lines out of the master cylinder.
   
4. Step 4 Unbolt the two bolts that hold the master cylinder to the brake booster.
   
5. Step 5 Slide the master cylinder off the brake booster.
   
6. Step 6 Remove the bolts that hold the brake booster to the firewall.
   
7. Step 7 Remove the cotter pin from the pin holding the back of the brake pedal to the master cylinder.
   
8. Step 8 Slide the brake booster to brake pedal pin out of the mounting bracket.
   
9. Step 9 Pull the brake booster off the firewall.
   
10. Step 10 Install the new brake booster. Installation is the reverse of removal.
    

Your power brake booster is bolted to the rear engine compartment, or firewall, from the inside , so you need to disconnect the rod from the brake pedal, and locate and remove the bolts that hold it. You also have to unbolt your brake master cylinder too.

get ready for some work.you need to remove the master cylinder nuts that hold master cylinder to brake booster.once you remove nuts you have 2 choices remove master cylinder to remove booster. to keep from bending brake lines.or you can leave master cylinder in pull it toward you easily careful dont bend lines .disconnect vacuum line at booster .go inside vechicle to floor on driver side loosen four nuts on floor to booster .disconnect power brake push rod from brake pedal .dont force pushrod to the sides when disconnecting it.remove four booster nuts then remove booster.when in stalling the new booster loosely install four nuts then connect the push rod to the brake pedal .install new clip tighten the booster unit .if you decide to remove master cylinder use inline wrenches on master cylinder to remove lines.also plug the master cylinder brake line holes to keep from losing all brake fluid.

remove retaining clip and slide the power brake push rod off the brake pedal pin, then remove booster to firewall nuts. installation is in reverse order.