Ford produced the Bronco II in 1988 with both a manual or an automatic transmission. The manual transmission uses a clutch and gearbox to move between gears. The clutch is a hydraulic system that uses oil. Air trapped in the hydraulic system must be bled from the system. Bleeding the clutch on a 1988 Bronco requires an hour of time and a few tools to restore tension to the clutch, making shifting gears easier.
Tools Used: Shop rag, DOT-3 brake fluid, Wrench, Rubber tubing, Clear plastic bottle
Bleed Clutch
Use a shop rag to clean off any dust and debris from the clutch fluid reservoir located near the firewall on the driver's side of the engine. Remove the cap and rubber diaphragm and set them aside. Fill the reservoir with DOT-3 brake fluid to the full marks.
Locate the bleed screw. The bleed screw points towards the driver's compartment on the side of the transmission. The screw sits next to the inlet connection in the slave cylinder body and it will be even with the firewall. Place a piece of rubber tubing on the end of the bleed screw and submerge the other end in a clear plastic bottle partially filled with brake fluid.
Loosen the bleed screw with a wrench until a steady stream of fluid comes out of the tubing. Tighten the screw.
Depress the clutch to the floor and hold it for one to two seconds then rapidly release the pedal. Pause for one to two seconds then repeat the process a total of 10 times. Check the fluid in the reservoir and top off as necessary.
Repeat Step 4 five times total, checking the reservoir each time.
Push the clutch to the floor and open the bleed screw slightly to allow additional air to escape. Close the bleed screw and tighten it. Release the clutch and check the fluid level. Top off the fluid level then replace the diaphragm and cap. Test the vehicle by starting it and pressing down on the clutch. You should be able to move between gears without any grinding. If there is grinding, repeat the process starting at Step 4.
Tips & Warnings
Brake fluid is highly corrosive. Clean up any spills onto painted portions of the vehicle immediately with a shop rag and water.
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