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Brake Master Cylinder Removal: Datsun 280Z

Updated on March 28, 2012
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First things First! Here's what it looks like! An overhead view of the brake master cylinder (reservoirs removed for better view,) still connected to the vacuum servo unit.Removal of brake lines from the brake master cylinder.Loosening/Removing Bolts holding the Brake master cylinder to the Vacuum Servo Unit.Step Three Removal...what it might look like...A view of the brake master cylinder flange.A view of the Vacuum servo unit after the brake master cylinder has been removed.Hmm...Decisions...Decisions...
First things First! Here's what it looks like!
First things First! Here's what it looks like!
An overhead view of the brake master cylinder (reservoirs removed for better view,) still connected to the vacuum servo unit.
An overhead view of the brake master cylinder (reservoirs removed for better view,) still connected to the vacuum servo unit.
Removal of brake lines from the brake master cylinder.
Removal of brake lines from the brake master cylinder.
Loosening/Removing Bolts holding the Brake master cylinder to the Vacuum Servo Unit.
Loosening/Removing Bolts holding the Brake master cylinder to the Vacuum Servo Unit.
Step Three Removal...what it might look like...
Step Three Removal...what it might look like...
A view of the brake master cylinder flange.
A view of the brake master cylinder flange.
A view of the Vacuum servo unit after the brake master cylinder has been removed.
A view of the Vacuum servo unit after the brake master cylinder has been removed.
Hmm...Decisions...Decisions...
Hmm...Decisions...Decisions...

First Things First

Disclaimer: This article was written to give a general overview regarding how to remove a brake master cylinder. Individuals who attempt said activity waive all responsibility of injury, death or damage to personal property or person from Squirrelgonzo. Squirrelgonzo is not a certified mechanic and strongly encourages the wear of proper safety equipment. Always consult a mechanic before beginning any type of DIY automotive work.

Before you start any work on your vehicle, make sure you have safety gear. Using appropriate safety equipment, such as gloves or safety glasses/goggles can prevent injury and keep you focused on the task at hand. It is also strongly advised to remove all jewelry and disconnect the vehicles battery prior to working on your vehicle to prevent serious injury.

Using the right tools plays a major role in working on a vehicle and can help prevent damage to your vehicle, workspace and the environment. Utilizing the right tools can minimize the time it takes to complete your task.


What does a Brake Master Cylinder do?

The Brake Master Cylinder regulates brake fluid supplied to the brake lines through changes in pressure when the brake pedal is pressed. In turn, this causes the brake pads to compress on the brake rotor, making the vehicle slow down or stop altogether.

For more information on Brake Master Cylinders, you can visit this website:

http://auto.howstuffworks.com/auto-parts/brakes/brake-types/master-brake1.htm


For this Task, We will need :

-Safety Glasses or Goggles

-Gloves

-Drain/Drip Pan

-An extra container to help catch the brake fluid inside the engine bay.

-A Ratchet Wrench with 12mm attachment head.

-10mm and 12mm Wrenches for brake lines and hard to reach flange bolts.

-Haynes Manual 28012(206) Page 135-8

(A Haynes Manual can be the most effective tool you have and often times, you won't need to consult the internet as the Haynes manual will break down and explain how to operate on the specified vehicle in simplified terms.)

-Flathead and Phillips Screwdrivers (If the reservoirs are to be removed from the brak master cylinder.)


Step One

Locate the Brake Master Cylinder on the driver side of the engine bay and Place a Drip/Drain Pan underneath the vehicle to catch any excess brake fluid.

It might also help to place a container directly underneath the brake master cylinder to prevent any mess inside the engine bay.


Step Two

Using a 10mm Wrench, loosen the fittings attaching the fuel lines to the brake master cylinder. Unless the reservoirs are empty, expect to see brake fluid draining out of the fuel lines and brake master cylinder. This is okay, the Drain pan and/or container should catch any fluid.

You can also bleed the brake master cylinder through the two bleed nipples on the side of the brake master cylinder. In fact, this is probably easier and avoids mess.


Step Three

Using a Ratchet Wrench with a 12mm attachment head (You may also need to use a 12mm wrench,) loosen and remove the bolts attaching the brake master cylinder to the vacuum servo unit. Keeping in mind that the sensors attached to the reservoir may still be connected and the fluid in the reservoirs may still need to be drained, You should now be able to remove the brake master cylinder from the vehicle and do with it as you please.

(If you intend to remove the reservoirs from the cylinder itself, ensure the reservoirs have been drained of brake fluid first. Use a screwdriver to loosen the spring retainer thingy until it is loose enough to move around without too much trouble and pull upwards on the reservoir. That should cause the reservoir as a whole to pop off.)


Step Four

Reward yourself for a job well done with a beer-Or err...Other celebratory beverage...


Gonzo-Out.



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