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Then open the hood and remove the Upper torque mount cross member.
Next remove the Air filter housing.
The remove the Big Cover over the Relay/fuse panel under the hood.
Once the cover is off remove the 13mm nut for the Positive cable.
Then remove the 2 screws securing the Relay box into place.(one of the screws is under where the positive cable just came off)
Unplug the one harness from the box and move the box to the side.
Then reach under and unplug the ABS module. There is 2 plugs. One you have to push a little tab and fold the cover back to release the plug. The other is 2 push tabs then pull.
Ok here is where it will get a little tricky. Look where the ABS pump motor assembly bolts to the body. There is 3 10mm bolts remove them and make sure the pump motor is loose.(No need to disconnect the lines)
Remove the 2 screws holding the Master Cylinder to the booster.
Unplug the sensor in the booster. Remove the Line and Valve from inside the booster.
That should be about it from outside till the booster is loose.
Inside the car:
Remove the Lower dash panel on the drivers side.
Then remove the clip holding the brake pedal to the booster. Either slide the Pin out or slide the Arm off.(Forget which it has). Then remove the 4 13mm screws holding the Booster to the Firewall.
Now go back outside:
Then slide the Master cylinder off of the Booster and kind of pull and move to the side.
Might require Carefully bending some of the lines. Then slide the Booster out.(Most of the times it takes some work to get it slid out. It might take some time to slide it out just take your time.
Then install in reverse order.
It will take a little time to do. About 1/2 a day at home with Hand tools.
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1987 Ford mustang LX Coupe 5.0
1995 Yellow T5-RM yes Manual
1996 850 turbo
Have serious hissing sound. How far can I let this problem go? Can't find specific 'brake boost assist' part online. Any links? Have tried forum sponsors. Part of the master cylinder or separate? Thanks very much and God bless!
When pulling out the booster, remember to keep the master sylinder as horizontal as possible. I tipped it over too much and got air in the brake fluid and had to bleed the system.
When pulling out the booster, remember to keep the master sylinder as horizontal as possible. I tipped it over too much and got air in the brake fluid and had to bleed the system.
The brake line needs to be disconnected between
- master cylinder and ABS unit
- the 4 circuits that ABS unit feeds
To pull the ABS unit out (need to come out so the booster can come out) Air will be in the system and require a bleed.
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2001 V70 T5 ASR Wife says we are Volvo for Life
2001 XC70 Wife says we are still Volvo for Life
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Brake Booster replacement
