Ford 5F9Z-2140-CA
Master Cylinder

The first step to work on the brake master cylinder starts with shutting down the engine then pressing down the brake pedal several times to exhaust the vacuum in the brake booster. Begin the service operation by taking out both the battery tray and the air cleaner assembly. A proper suction device will drain the brake master cylinder reservoir. Then disconnect the level indicator switch electrical connector and the brake lines from the master cylinder while torquing them to 17 Nm (13 lb-ft). Seal off braking system components after disconnecting all brake lines and apply plugging devices to master cylinder ports. Put aside the master cylinder-to-booster seal with the master cylinder before you remove and discard two master cylinder-to-booster nuts to extract the brake master cylinder by retightening to 17 Nm (13 lb-ft) upon installation. The installation of the new master cylinder starts with processing the reverse removal sequence before bleeding the brake system and examining brake operation. Employ DOT 3 motor vehicle brake fluid for all applications because improper use could lead to lasting brake component damage and handle the fluid with eye protection while washing your hands after handling it thoroughly. Eyes that come in contact with brake fluid require immediate rinsing with flowing water for fifteen minutes before consulting medical assistance. Ingestion of this substance requires both water drinking and vomiting induction followed by immediate medical care. The liquid should be washed out from painted and plastic surfaces right after spillage by using water.

You must deactivate the engine before using the brake pedal multiple times to empty vacuum from the brake booster during brake master cylinder servicing. Start by removing the battery tray together with the air cleaner assembly. A proper suction device should empty the brake master cylinder reservoir followed by removing the master cylinder brake fluid level indicator switch electrical connector and brake tubes from the master cylinder before retightening these connections to 17 Nm (13 lb-ft). Seal the brake tubes using caps while placing plugging materials into master cylinder opening points. Follow this step by removing the seal between master cylinder and brake booster unit then take out and discard the two brake master cylinder-to-brake booster nuts to extract the brake master cylinder although its installation torque should be set to 20 Nm (15 lb-ft). Installation should start with the reverse of removal steps after which the brake system requires bleeding before performing a functional test. Brake fluid from DOT 3 must be used for all repairs to avoid permanent brake component damage while taking care that brakes fluid causes damage to painted surfaces along with plastics so clean spills right away with water. To receive emergency medical details about Ford/Motorcraft products please dial 1-800-959-3673 while you can view product Material Safety Data Sheet (MSDS) when the information is available.

Prior to fixing or maintaining the brake master cylinder start by shutting down the engine then press the brake pedal several times to empty the brake booster vacuum. First disconnect the battery tray followed by the air cleaner assembly. A suitable suction device will drain the brake master cylinder reservoir while disconnecting electrical connector and brake lines from the master cylinder for a 17 Nm (13 ft. lbs.) torque installation. Seal brake lines through the use of covers while installing ports on the master cylinder. The master cylinder-to-booster seal needs to be separated from the master cylinder during removal. Then separate and discard the two brake master cylinder-to-brake booster nuts until the master cylinder can be extracted. This cylinder requires a torque of 20 Nm (15 ft. lbs.) when replacement occurs. When reversing the removal steps you need to bleed the brake system before conducting operational checks. Hydraulic brake fluid should always be DOT 3-certified to avoid brake components damage and users must handle brake fluid carefully by keeping it away from eyes and painted surfaces and plastics.