Removal And Installation

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

1.
- 1.
  
  Loosen the clamp.
- 2.
  
  Detach the ACL outlet pipe.
- 3.
  
  Disconnect the electrical connector.

Courtesy of FORD MOTOR COMPANY

2.

Remove the nut and position the hood sensor aside.

Courtesy of FORD MOTOR COMPANY

3.

Remove the 2 bolts and position the degas bottle/ACL assembly aside.
- To install, tighten bolts to 15 Nm (133 lb-in).

Courtesy of FORD MOTOR COMPANY

4.

Relieve the vacuum in the brake booster by pressing and releasing the brake pedal a minimum of 5 times with the engine not running.

5.

Disconnect the brake fluid level switch and the vacuum sensor electrical connectors.

Courtesy of FORD MOTOR COMPANY

6.

If equipped, detach the front differential vent hose retainer from the brake booster stud.

Courtesy of FORD MOTOR COMPANY

7.

Remove the 2 brake master cylinder nuts and position the master cylinder aside.
- Support the master cylinder with mechanic's wire.
- To install, tighten the nuts to 25 Nm (18 lb-ft).

Courtesy of FORD MOTOR COMPANY

8.

NOTE: Do not service the brake pedal or brake booster without first removing the stoplamp switch. This switch must be removed with the brake pedal in the at-rest position. The switch plunger must be compressed for the switch to rotate in the bracket. Attempting to remove the switch when the plunger is extended (during pedal apply) will result in damage to the switch.

Remove the stoplamp switch. Refer to Exterior Lighting .

9.

NOTE: The booster push rod clevis-locking pin is a one-time use only part. Any time the booster push rod clevis-locking pin is removed, a new booster push rod clevis-locking pin should be used.

NOTE: Remove the clevis-locking pin by squeezing the locking tabs and pulling outward on the opposite end.

Remove and the clevis-locking pin and the 4 brake booster-to-pedal bracket nuts.
- To install, tighten the nuts to 25 Nm (18 lb-ft) following a clockwise pattern starting with the upper left nut.
- Discard the clevis-locking pin.

Courtesy of FORD MOTOR COMPANY

10.

NOTE: To allow proper drainage of any moisture, the vacuum sensor must be installed in the same position and orientation as removed.

Detach the vacuum sensor assembly from the brake booster, position the vacuum sensor aside and remove the brake booster.

Courtesy of FORD MOTOR COMPANY

11.

NOTE: Do not press, pull or otherwise move the brake pedal while installing the stoplamp switch. This switch must be installed with the booster push rod attached to the brake pedal and with the brake pedal in the at-rest position. Installing this switch with the brake pedal in any other position will result in incorrect adjustment and may damage the switch.

To install, reverse the removal procedure.