How to check, remove, install, and adjust the power brake booster unit on Ford Ranger?

The power brake booster unit requires no special maintenance apart from periodic inspection of the vacuum hose and the case. Dismantling the brake booster requires special tools and should not be attempted by the home mechanic; if a problem arises, a new or factory rebuilt unit should be installed. To check the power booster, begin by depressing the brake pedal several times with the engine running, ensuring no change in the pedal reserve distance, which is the distance between the pedal and the floor when fully depressed. After turning off the engine, slowly depress the brake pedal; if it goes down farther initially but rises after subsequent depressions, the booster is airtight. Depressing the pedal and starting the engine should result in a slight drop of the pedal for normal operation. If the pedal remains depressed for about 30 seconds without a change in reserve distance after stopping the engine, the booster is airtight. A "hard" pedal when the engine is running indicates improper booster operation or a vacuum leak in the hose. For removal, detach the master cylinder from the booster, being cautious not to bend the brake lines, and unplug the electrical connector from the brake light switch and cruise control switch if equipped. Remove the pushrod retaining clip and nylon washer, then detach the booster from the firewall and lift it out of the engine compartment. For installation, position the booster on the firewall, tighten the mounting nuts, connect the pushrod and brake light switch, and install the master cylinder, ensuring proper torque. Before driving, check the operation of the brakes. Some boosters may have an adjustable pushrod, typically matched at the factory, but if adjustment is needed, a gauge can be fabricated from heavy gauge sheet metal. Symptoms of a misadjusted pushrod include dragging brakes or excessive brake pedal travel with a groaning sound. To check the pushrod length, unbolt the master cylinder and position it aside without disconnecting hydraulic lines. Apply vacuum to the booster with a hand-held vacuum pump, then use the pushrod gauge to ensure proper seating of the pushrod. Adjust as necessary, and after completing the adjustment, reinstall the master cylinder and verify proper brake operation before driving.

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303 Brake Boosters found

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Ford Brake Booster Assembly
Part Number: 9M6Z-2005-A
$489.07 MSRP: $805.45
You Save: $316.38 (40%)
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Product Specifications
- Other Name: Booster Assy - Brake; Booster, Brake Booster
Fits the following Ford Models:
- Escape | 2009-2012 | 4 Cyl 2.5L Duratec (110kW/150PS), 4 Cyl 2.5L PFI Gas/Electric, 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
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Ford Brake Booster Assembly
Part Number: AE9Z-2005-A
$151.30 MSRP: $206.74
You Save: $55.44 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Booster Assy - Brake; Brake Booster, Power Booster
- Manufacturer Note: When Replacing This Component, 2L523 Has To Be Replaced
Fits the following Ford Models:
- Flex | 2010-2011 | 6 Cyl 3.5L DOHC T/C, 6 Cyl 3.5L DOHC VCT SMPI | 6-Speed Automatic Transmission 6F50, 6-Speed Automatic Transmission 6F55, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
- Taurus | 2010-2011 | 6 Cyl 3.5L DOHC T/C, 6 Cyl 3.5L DOHC VCT SMPI | 6-Speed Automatic Transmission 6F Mid-Range, 6-Speed Automatic Transmission 6F50, 6-Speed Automatic Transmission 6F55, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
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Ford Brake Booster Assembly
Part Number: CT4Z-2005-A
$184.07 MSRP: $298.18
You Save: $114.11 (39%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Booster Assy - Brake; Brake Booster, Power Booster
Fits the following Ford Models:
- Edge | 2012-2014 | 4 Cyl 2.0L EcoBoost (240PS) | 6-Speed Automatic Transmission 6F Mid-Range, 6-Speed Automatic Transmission 6F50, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
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Ford Brake Booster Assembly
Part Number: HL3Z-2005-G
$88.72 MSRP: $151.45
You Save: $62.73 (42%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Booster Assembly - Brake; Booster, Brake Booster
- Replaces: BRB-160, HL3Z-2005-E
Fits the following Ford Models:
- F-150 | 2017-2020 | 6 Cyl 2.7 L GAS, 6 Cyl 3.0 L DIESEL, 6 Cyl 3.3 L FLEX, 6 Cyl 3.5 L GAS, 6 Cyl 3.5L GTDI, 8 Cyl 5.0 L FLEX | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Brake Booster Assembly
Part Number: PL3Z-2005-F
$1303.82 MSRP: $2147.27
You Save: $843.45 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: BOOSTER ASY - BRAKE; Booster, Booster Assembly, Brake Booster
- Replaces: NL3Z-2005-A, ML3Z-2005-X, ML3Z-2005-U, ML3Z-2005-V, ML3Z-2005-W, PL3Z-2005-B, NL3Z-2005-B, PL3Z-2005-A, PL3Z-2005-D, PL3Z-2005-E
Fits the following Ford Models:
- F-150 | 2021-2024 | 6 Cyl 2.7 L GAS, 6 Cyl 3.0 L DIESEL, 6 Cyl 3.3 L FLEX, 6 Cyl 3.5 L FULL HYBRID EV-GAS (FHEV), 6 Cyl 3.5 L GAS, 8 Cyl 5.0 L FLEX, 8 Cyl 5.2 L GAS
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Ford Brake Booster Assembly
Part Number: CK4Z-2005-C
$206.41 MSRP: $287.27
You Save: $80.86 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: BOOSTER ASY - BRAKE; Booster, Brake Booster
- Replaces: CK4Z-2005-B, CK4Z-2005-A, BRB-124, BRB-161
Fits the following Ford Models:
- Transit | 2015-2021 | 5 Cyl 3.2 L DIESEL, 5 Cyl 3.2L Duratorq-TDCi - Puma, 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS, 6 Cyl 3.5L GTDI, 6 Cyl 3.7 L CNG, 6 Cyl 3.7 L FLEX, 6 Cyl 3.7 L GAS, 6 Cyl 3.7 L LPG, 6 Cyl 3.7L PFI NA | 6-Speed Automatic Transmission (6R80)
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Ford Brake Booster Assembly
Part Number: PZ1Z-2005-M
$623.87 MSRP: $1085.45
You Save: $461.58 (43%)
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Product Specifications
- Other Name: BOOSTER ASY - BRAKE; Booster, Brake Booster
- Replaces: PZ1Z-2005-E, PZ1Z-2005-A, PZ1Z-2005-G, PZ1Z-2005-K
Fits the following Ford Models:
- Escape | 2023-2025 | 3 Cyl 1.5 L GAS, 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L PLUG-IN HYBRID EV-GAS (PHEV)
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Ford Brake Booster Assembly
Part Number: CV6Z-2005-H
$336.74 MSRP: $550.00
You Save: $213.26 (39%)
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Product Specifications
- Other Name: Booster Assy - Brake; Booster Assembly, Brake Booster
- Replaces: BRB-107, CV6Z-2005-G, CV6Z-2005-D, BRB-66
Fits the following Ford Models:
- C-Max | 2013-2018 | 4 Cyl 2.0L Duratec Hybrid (130kW) | ECVT Auto Trans Power Split, Front-Wheel Drive (Left Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive)
- Focus | 2012-2018 | Electric Motor | 1-Speed Transmission, 5-Speed Manual Transmission - MTX75, 6-Speed Automatic Transmission 6F15, 6-Speed Automatic Transmission DPS6, 6-Speed Manual Transaxle - MMT6, 6-Speed Manual Transmission - B6, Front-Wheel Drive (Left Hand Drive), Left Hand Drive
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Ford Brake Booster Assembly
Part Number: PZ1Z-2005-K
$623.87 MSRP: $1085.45
You Save: $461.58 (43%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: BOOSTER ASY - BRAKE; Booster, Booster Assembly, Brake Booster
- Replaced by: PZ1Z-2005-M
Fits the following Ford Models:
- Escape | 2023 | 3 Cyl 1.5 L GAS, 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L PLUG-IN HYBRID EV-GAS (PHEV)
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Ford Booster Assembly Brake
Part Number: F7SZ2005AA
$427.43 MSRP: $588.86
You Save: $161.43 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Booster Assy - Brake; Brake Booster
Fits the following Ford Models:
- Thunderbird | 1993-1997 | 6 Cyl 3.8L, 8 Cyl 4.6L, 8 Cyl 5.0L | 4AT 4R70W, 4AT AOD, 5MT
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Ford Brake Booster Assembly
Part Number: CK4Z-2005-B
$192.76 MSRP: $287.27
You Save: $94.51 (33%)
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Product Specifications
- Other Name: Booster Assy - Brake
- Replaced by: CK4Z-2005-C
Fits the following Ford Models:
- Transit | 2016-2019 | 5 Cyl 3.2L Duratorq-TDCi - Puma, 6 Cyl 3.5L GTDI, 6 Cyl 3.7L PFI NA | 6-Speed Automatic Transmission (6R80)
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Ford Brake Booster Assembly
Part Number: HL3Z-2005-E
$89.80 MSRP: $151.45
You Save: $61.65 (41%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Booster Assy - Brake
- Replaced by: HL3Z-2005-G
Fits the following Ford Models:
- F-150 | 2017 | 6 Cyl 3.5L GTDI | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Brake Booster Assembly
Part Number: CV6Z-2005-G
$336.74 MSRP: $550.00
You Save: $213.26 (39%)
ADD TO CART
Product Specifications
- Other Name: Booster Assy - Brake
- Replaced by: CV6Z-2005-H
Fits the following Ford Models:
- C-Max | 2013-2014 | 4 Cyl 2.0L Duratec Hybrid (130kW) | ECVT Auto Trans Power Split, Front-Wheel Drive (Left Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive)
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Ford Brake Booster Assembly
Part Number: AV6Z-2005-C
$181.05 MSRP: $309.09
You Save: $128.04 (42%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Booster Assy - Brake
- Replaced by: AV6Z-2005-L
Fits the following Ford Models:
- Focus | 2015-2018 | 4 Cyl 2.0L EcoBoost (240PS) | 1-Speed Transmission, 5-Speed Manual Transmission - MTX75, 6-Speed Automatic Transmission 6F15, 6-Speed Automatic Transmission DPS6, 6-Speed Manual Transaxle - MMT6, 6-Speed Manual Transmission - B6, Front-Wheel Drive (Left Hand Drive), Left Hand Drive
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Ford Brake Booster Assembly
Part Number: 8C3Z-2005-B
Product Specifications
- Other Name: Booster Assembly - Brake; Booster, Brake Booster
- Replaces: 5C3Z-2005-AC, 8C3Z-2005-A, 6C3Z-2005-AB, BRB-16
Fits the following Ford Models:
- F-250 Super Duty | 2005-2010 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L, 8 Cyl 6.4L Diesel Twin Turbo | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- F-350 Super Duty | 2005-2010 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L, 8 Cyl 6.4L Diesel Twin Turbo | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- F-450 Super Duty | 2005-2010 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L, 8 Cyl 6.4L Diesel Twin Turbo | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- F-550 Super Duty | 2005-2010 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L, 8 Cyl 6.4L Diesel Twin Turbo | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Brake Booster Assembly
Part Number: 6C3Z-2005-AB
Product Specifications
- Other Name: Booster Assembly - Brake; Brake Booster
- Replaced by: 8C3Z-2005-B
Fits the following Ford Models:
- F-250 Super Duty | 2006-2007 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- F-350 Super Duty | 2006-2007 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- F-450 Super Duty | 2006-2007 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- F-550 Super Duty | 2006-2007 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Brake Booster Assembly
Part Number: LX6Z-2005-W
Product Specifications
- Other Name: BOOSTER ASY - BRAKE; Booster, Booster Assembly, Brake Booster
- Replaces: BRB-295, LX6Z-2005-R
Fits the following Ford Models:
- Escape | 2020-2022 | 3 Cyl 1.5 L GAS, 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L PLUG-IN HYBRID EV-GAS (PHEV)
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Ford Brake Booster Assembly
Part Number: 8C3Z-2005-A
Product Specifications
- Other Name: Booster Assy - Brake
- Replaced by: 8C3Z-2005-B
Fits the following Ford Models:
- F-250 Super Duty | 2008 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L, 8 Cyl 6.4L Diesel Twin Turbo | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- F-350 Super Duty | 2008 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L, 8 Cyl 6.4L Diesel Twin Turbo | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- F-450 Super Duty | 2008 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L, 8 Cyl 6.4L Diesel Twin Turbo | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- F-550 Super Duty | 2008 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L, 8 Cyl 6.4L Diesel Twin Turbo | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Kit - Brake Booster
Part Number: 8L8Z-2002-A
$155.04 MSRP: $247.27
You Save: $92.23 (38%)
Product Specifications
- Other Name: Kit - Brake Booster Repair
- Replaced by: 9L8Z-2005-A
Fits the following Ford Models:
- Escape | 2008 | 4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC, 6 Cyl 3.0L DOHC EFI Modular | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
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Ford Brake Booster Assembly
Part Number: 5C3Z-2005-AC
Product Specifications
- Other Name: Booster Assy - Brake
- Replaced by: 8C3Z-2005-B
Fits the following Ford Models:
- F-250 Super Duty | 2005 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- F-350 Super Duty | 2005 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- F-450 Super Duty | 2005 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- F-550 Super Duty | 2005 | 10 Cyl 6.8L EFI, 8 Cyl 5.4L | 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650, Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Brake Booster Parts Questions & Experts Answers

Brake Booster Assembly
YU3Z-2005-AA
Q: How to check, remove, install, and adjust the power brake booster unit on Ford Ranger?
A:
The power brake booster unit requires no special maintenance apart from periodic inspection of the vacuum hose and the case. Dismantling the brake booster requires special tools and should not be attempted by the home mechanic; if a problem arises, a new or factory rebuilt unit should be installed. To check the power booster, begin by depressing the brake pedal several times with the engine running, ensuring no change in the pedal reserve distance, which is the distance between the pedal and the floor when fully depressed. After turning off the engine, slowly depress the brake pedal; if it goes down farther initially but rises after subsequent depressions, the booster is airtight. Depressing the pedal and starting the engine should result in a slight drop of the pedal for normal operation. If the pedal remains depressed for about 30 seconds without a change in reserve distance after stopping the engine, the booster is airtight. A "hard" pedal when the engine is running indicates improper booster operation or a vacuum leak in the hose. For removal, detach the master cylinder from the booster, being cautious not to bend the brake lines, and unplug the electrical connector from the brake light switch and cruise control switch if equipped. Remove the pushrod retaining clip and nylon washer, then detach the booster from the firewall and lift it out of the engine compartment. For installation, position the booster on the firewall, tighten the mounting nuts, connect the pushrod and brake light switch, and install the master cylinder, ensuring proper torque. Before driving, check the operation of the brakes. Some boosters may have an adjustable pushrod, typically matched at the factory, but if adjustment is needed, a gauge can be fabricated from heavy gauge sheet metal. Symptoms of a misadjusted pushrod include dragging brakes or excessive brake pedal travel with a groaning sound. To check the pushrod length, unbolt the master cylinder and position it aside without disconnecting hydraulic lines. Apply vacuum to the booster with a hand-held vacuum pump, then use the pushrod gauge to ensure proper seating of the pushrod. Adjust as necessary, and after completing the adjustment, reinstall the master cylinder and verify proper brake operation before driving.

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