Ford Mustang (1999-2004) Service Manual: Brake Booster - Hydro-Boost (Description and Operation)
The Hydro-Boost brake booster is a hydraulically operated brake booster powered by the power steering pump (3A674). The power steering pump provides the fluid pressure to operate both the power brake booster and the power steering gear (3504).
A Hydro-Boost reserve system (accumulator) stores sufficient fluid under pressure to provide at least two power-assisted brake applications in the event the power steering pump fluid flow is interrupted.
For low assist concerns on vehicles equipped with the Hydro-Boost system, refer to Section to check the power steering pump pressure and flow.
The brakes can also be applied manually if the reserve system is depleted.
Any leakage goes directly back to the power steering pump reservoir (3E764).
Brake Booster - Vacuum (Description and Operation)
Power Brake Booster
The vacuum type power brake booster (2005):
is a dual diaphragm, vacuum assisted power brake booster
reduces brake pedal force and travel distance.
is located on ...
Hydro-Boost Bleeding
1. NOTE: The Hydro-Boost power brake booster (2B560) is generally
self-bleeding, and the
following procedure will normally bleed the air from the power brake booster.
Normal operation
of the vehicle ...
Other materials:
Manifold Gauge Set Connection
Special Tool(s)
R-134a Manifold Gauge Set
176-R032A or equivalent
1. Turn both valves on the R-134a Manifold Gauge Set clockwise to close the
low- and highpressure
hoses to the center manifold and center hose.
2. Remove the A/C charging valv ...
Fuel quality
Note: Use of any fuel other than those recommended may cause
powertrain damage and a loss of vehicle performance; repairs may not be
covered under warranty.
Choosing the Right Fuel
Use only unleaded fuel or unleaded fuel blended with a maximum of
15% ethanol. ...
Vacuum Hose Repair - Mini-Tube
Special Tool(s)
Vacuum Pump Kit
416-D002 (D95L-7559-A) or
equivalent
1. Measure the length of the damaged area of the mini-tube vacuum hose.
2. Cut a piece of standard 1/8 inch inner diameter vacuum hose approximately 25
mm (1 inch
longer t ...
