This Haynes 36058 repair manual covers 1980-1997 Ford full-size pickup trucks and Broncos, 2WD and 4WD, powered by gasoline engines, including the following specific models:

• Ford F-100 - 1980-1996
• Ford F-150 - 1980-1996
• Ford F-250 - 1980-1996
• Ford F-250HD - 1997
• Ford F-350 - 1980-1997
• Ford Bronco - 1980-1996

Note: This manual does not include information pertaining to diesel engine or Super Duty models.

Book Excerpt: 1980-1997 Ford F-100, F-150, F-250, F-350 Pickup Trucks, Ford Bronco Repair Manual CLUTCH: GENERAL INFORMATION AND CHECKS GENERAL INFORMATION

1. All models with a manual transmission use a single dry plate, diaphragm spring type clutch. The clutch disc has a spined hub which allows it to slide along the splines of the transmission input shaft. The clutch and pressure plate are held in contact by spring pressure exerted by the diaphragm in the pressure plate. All models equipped with three and four speed transmissions use a separate clutch housing (bellhousing) attached to the engine block which required removal after the transmission is withdrawn to gain access to the clutch. Five speed transmissions are a one piece design (clutch housing integral with transmission).
2. Early models (1980 through 1983) ulitized a mechanical release system of levers and actuating rods to transmit force from the clutch pedal to the clutch release bearing. These early designs were soon replaced by more efficient and lower maintenance release systems employing hydraulic pressure. The original hydraulic release system consists of reservoir, the hydraulic line, release cylinder, release lever and the clutch release (or throwout) bearing. When pressure is applied to the clutch pedal to release the clutch, hydraulic pressure is exerted against the release bearing. This pressure pushes against the diaphragm spring of the pressure plate assembly, which in turn releases the clutch plate.
3. With the later addition of a new five speed transmission, a second hydraulic system was added. This system is essentially idential to the original hydraulic system except it utilizes an internal (concentric) slave cylinder for clutch release instead of the conventional forked release lever. Centered around the input shaft of the transmission, the concentric slave cylinder actuates the release bearing directly and uses larger internal surface area as opposed to the leverage principle to multiply the input line pressure to the extent necessary to counteract the clutch diaphragm spring force. This pressure pushes against the diaphragm spring of the pressure plate assembly, which in turn releases the clutch plate.

Subject: 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 Ford F-100, F-150, F-250, F-250HD, F-350 Pickup Trucks, Ford Bronco service, maintenance, and repair instructions. ISBN-10: 1620920107 | ISBN-13: 9781620920107 | Haynes 36058