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FORD BRONCO -> BRAKE SYSTEM; 4WABS, RABS, Self Test... -> Master Cylinder & Booster - Hydro Boost, F 350 Swaps
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Although we initially developed this site for 78-96 Big Broncos, information in many Links also applies to F, E Series & Cars. UPDATE; all Links via web.archive may be down; Copy orig. URL & go to http://replay.waybackmachine.org/ to search for the new archived copy
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"...Use "Hard (Heavy Duty)" vacuum line for booster. Regular rubber hose such as used for WS washer fluid line will likely collapse after about say, 20 years. Inspect for any sign of kinking or collapse. Check vacuum draw available with a gauge connected between engine and booster. At idle, healthy engines draw somewhere between 17 and 22 in Hg. Check vacuum by depressing brake pedal firmly until it stops. The gauge should read a drop to approximately 10 in. Hg and then quickly recover to a normal reading. If vacuum takes too long to recover, there is a restriction in the volume, i.e.: fitting clogged or vacuum hose collapsed. Repair as necessary. While a defective booster will cause a hard pedal, a spongy or low pedal requires a hydraulic system check..."
Source: by miesk5 at Ford Bronco Zone Forums
4WABS Master Cylinder and Brake Fluid Level Switch; "... The master cylinder reservoir is a clear, translucent plastic container with three main chambers: An integral fluid level switch is part of the master cylinder reservoir assembly. A low pressure hose is attached to the master cylinder reservoir which feeds brake fluid to the hydraulic control unit reservoir. The brake master cylinder reservoir and brake master cylinder filler cap gasket are serviced separately ..." read more (under license from Delmar Publishers, comb of Chilton/Nichols/Delmar & Haynes); some may be incorrect, as reported by Seabronc, thanks Seabronc! NEW SITE URL!!! MUST REGISTER TO VIEW; select year, make, model, engine size and go to appropriate section
Source: by Chilton via Autozone
4WABS Master Cylinder; "... is a tandem master cylinder. The primary (rear) circuit feeds the right side front and left side rear brakes. The secondary (front) circuit feeds the left side front and right side rear brakes. The master cylinder is serviced as a complete assembly. ..." read more (under license from Delmar Publishers, comb of Chilton/Nichols/Delmar & Haynes); some may be incorrect, as reported by Seabronc, thanks Seabronc! NEW SITE URL!!! MUST REGISTER TO VIEW; select year, make, model, engine size and go to appropriate section
Source: by Chilton via AutoZone
Booster Pushrod Adjustment in a 90
Source: by Seattle FSB (SeattleFSB) at FSB
Booster Pushrod Adjustment pic in a 90
Source: by Seattle FSB (SeattleFSB) at SuperMotors.net
Booster Replacement in an 87
Source: by Teasers (Bonnie) at FSB
Booster Replacement pics & Tool list in an 87
Source: by Teasers (Bonnie) at SuperMotors.net
Brake Fluid Level Switch Connector Location Diagram, Engine Area in a 91 4.9
Source: by Ford via chiltonlibrary.com
Hydro Boost Fabrication & Installation in 78-79 Bronco & 73-79 F series
Source: by Trent (InfoFord, Picador, a Four Door 79) at NORTH COUNTRY SPECIALTIES® ncspecialties.com
Hydro Boost Fabrication & Installation in a 95
Source: by flourman at FSB
Hydro Boost Fabrication & Installation in a 96
Source: by boss (bossind, Steve) at 4x4 Preservation
Hydro Boost Fabrication & Installation in a 96
Source: by boss (bossind, Steve) at Ford Bronco Zone Forums
Hydro Boost Fabrication & Installation pics in a 96
Source: by boss (bossind, Steve) at SuperMotors.net
Hydro Boost Fabrication in a 78
Source: by chebbykiller (Big Black, The Bronco) at SuperMotors.net
Hydro Boost Fabrication pics & Diagrams in a 91 5.0
Source: by Derrick36 at SuperMotors.net
Hydro Boost Fabrication pics & info in a 96
Source: by GKR (Greg R) at SuperMotors.net
Hydro Boost Fabrication pics in an 89
Source: by triplesix at SuperMotors.net
Hydro Boost Power Steering Pump (Leepowersteering.com) pics & Info in a 91 5.0
Source: by Derrick36 at FSB
Hydro Boost System Review, VANCO
Source: by Bill A (BillaVista) at Pirate4x4.com
Hydro Boost System, 83-96 Bronco & Ford Truck; $695.00
Source: by broncograveyard.com
Hydro Boost Tips & Hints, general
Source: by CARDONE® cardone.com
Lubricant And Maintenance Materials Specifications & Capacity Charts for 96 Bronco, F-150, F-250, F-350 & F-Super Duty
Source: by Ford via thedieselstop.com
Master Cylinder & ABS Valve Assy Installation Info & pic, from 04 F-150 Supercrew in a 78
Source: by Quint C (Quints Bronco Project, (04 F-150 Supercrew drivetrain) at comcast.net/~qcrispin
Master Cylinder & Booster Installation from a 7.3L in a 92
Source: by Zach K (BurnedB, BurnedBronco, Badassbronco) at SuperMotors.net
Master Cylinder & Booster Installation in a 90
Source: by Dan90FSB (broncoboy23, Dan) at UC4x4
Master Cylinder & Booster Installation Info & pics, from 02-04 Lightning (MC) & 80-96 Bronco (Booster) in an 86
Source: by Ryan M (Fireguy50) at fordfuelinjection.com
Master Cylinder & Booster Installation Info & pics, from 02-04 Lightning (MC) & 80-96 Bronco (Booster) in an 86
Source: by Ryan M (Fireguy50) at FSB
Master Cylinder & Booster Installation Info, from F350 in a 78
Source: by Mark W (mrwbronco) at mrwbronco.com
Master Cylinder & Booster Installation Info, from F350 in an 84
Source: by Joe Y (Excursion, 84excursion, Tough Truck) at FSB
Master Cylinder & Booster Installation pics & Comparison to Stock, from F350 in a 79
Source: by bronczilla (MEAT) at SuperMotors.net
Master Cylinder & Booster Installation pics, from F350 in a 78
Source: by Steve J (seve) at SuperMotors.net
Master Cylinder & Booster Installation pics, from F350 in a 95
Source: by Late Model Man (Rick, Big Nasty, Beast, latemodelman) at SuperMotors.net
Master Cylinder & Booster Installation, from 2000 E350 in an 89
Source: by Andrew K (Andy351, das panzer, sloppy seconds, the magic carpet) at FSB
Master Cylinder & Booster Installation, from 2000 E350 in an 89
Source: by Andrew K (Andy351, das panzer, sloppy seconds, the magic carpet) at SuperMotors.net
Master Cylinder & Booster Installation, from F350 for 78-79
Source: by Kevin M (Project Double Agent) at okcnetworks.com
Master Cylinder & Booster Installation, from F350 for 78-79
Source: by Danny C via Tim C (TnTbronco2, Trail Truck, Street Truck, Crazed, Broke, OoG) at FSB
Master Cylinder & Booster Installation, from F350 for 78-79 Bronco
Source: by Danny C at fte
Master Cylinder & Booster Installation, from F350 in a 90 - slow to load pics
Source: by Clint R (The Bronco) at clintrussell.com via web.archive.org
Master Cylinder & Booster Installation, from F350 in a 91
Source: by Meixter (Cookie Monster) at SuperMotors.net
Master Cylinder & Booster Installation, from F350 in a 96
Source: by rmilleruga (robbiem) at SuperMotors.net
Master Cylinder & Booster Installation, from F350 in an 85
Source: by Tim O (RED WAGON, redwagon) at SuperMotors.net
Master Cylinder & Booster Installation, from F350 in an 85
Source: by Tim O (RED WAGON, redwagon) at FSB
Master Cylinder & Booster Installation, from F350 in an 85
Source: by Chris B (Blue, bronco boy) at FSB
Master Cylinder & Booster Installation, from F350 in an 85
Source: by Chris B (Blue, bronco boy) at chrisb.users.superford.org
Master Cylinder & Booster Installation, from F350 in an 88
Source: by Reptillikus (Kevin W) at forensick.net
Master Cylinder & Booster Installation, from F350 in an 88 (must register to view)
Source: by Reptillikus (Kevin W) at bucknakedoffroad.com
Master Cylinder & Booster Installation, from F350 in an 89 5.8 (SOLD, but Brian is keeping his info available)
Source: by Brian S at FSB
Master Cylinder & Booster Installation, from F350; Brake Overhaul Parts List in a 78
Source: by BigWheelz at FSB
Master Cylinder & Booster Location pic in a 93
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Master Cylinder & Booster Parts Break-Out Diagram, Removal & Installation & Master Cylinder Push Rod Adjustment in a 96 from the 1996 F-150, F-250, F-350, and Bronco Workshop Manual
Source: by Ford via miesk5 at FSB
Master Cylinder & Booster Parts Break-Out Diagram, Removal & Installation & Master Cylinder Push Rod Adjustment in a 96 from the 1996 F-150, F-250, F-350, and Bronco Workshop Manual
Source: by Ford via thedieselstop.com
Master Cylinder & Booster pics, from F350 in a 79
Source: by nunrush at SuperMotors.net
Master Cylinder & Booster pics, from F350 vs Stock in an 86
Source: by Mrit (Chris) at SuperMotors.net
Master Cylinder & Booster, from F350 in an 86 pics
Source: by Damager (Da Bonco) at SuperMotors.net
Master Cylinder Fluid Control (Proportioning) Valve Overview in a 96 from Workshop Manual; "...The brake pressure control valve regulates the hydraulic pressure in the rear brake system. It is located between the rear brake system's inlet and outlet ports in the main valve. When the brake pedal (2455) is applied, the full brake fluid pressure passes through the brake pressure control valve to the rear brake system until the valve's split point is reached. Above its split point, the brake pressure control valve begins to reduce the hydraulic pressure to the rear brakes, creating a balanced braking condition between the front and rear wheels to minimize rear wheel lock-up during hard braking.In case of the front brake system malfunction, the brake master cylinder fluid control valve has a bypass feature, which allows full hydraulic pressure to the rear brake system..."
Source: by Ford via SigEpBlue (Steve) at FSB
Master Cylinder Fluid Control Valve pic in a 96
Source: by red423 (red) at FSB
Master Cylinder Push Rod Adjustment, after F350 Swap
Source: by kf4amu (Will H, The Beast) at FSB
Repair Price Estimator, Bronco from 90-96 and other Fords; including labor & parts, shops in area, by Zip Code
Source: by RepairPal
Slow Brake Pedal Return Pinpoint Test in a 96 from the 1996 F-150, F-250, F-350, and Bronco Workshop Manual
Source: by Ford via miesk5 at FSB