Ford F150 Pickup. Instruction — part 1856

Fig. 2: Instruction Transaxle/Transmission & Clutch General Specifications (2 Of 2)
Courtesy of FORD MOTOR CO.

DESCRIPTION & OPERATION

MANUAL TRANSMISSION & CLUTCH

The primary function of the clutch system is to couple and decouple engine power to the transmission upon
driver command; refer to CLUTCH - F150 PICKUP .

Component Location

2003 Ford Pickup F150

2003 TRANSMISSIONS Instruction Transmission, Clutch & Transfer Case - General Information - F150 Pickup

Fig. 3: Identifying Instruction Transmission & Clutch Components
Courtesy of FORD MOTOR CO.

The clutch is a single-plate, dry friction clutch disc. The clutch disc has a splined hub with integral torsional
dampening springs which attaches the clutch disc to the input shaft.

Engine output is coupled to the input shaft by friction existing between the clutch disc facings and the
flywheel/clutch pressure plate assembly. The extent of this friction is directly related to the composition of the
facing material and the magnitude of the clamping force exerted by the clutch pressure plate. These factors limit
the amount of torque that can be transmitted without slippage.

The clamping force is obtained from the diaphragm spring contained within the clutch pressure plate assembly.
This clamping force is developed during the attachment of the clutch pressure plate to the flywheel.

The clutch system is disengaged when the clutch pedal is depressed and engaged when the clutch pedal is
released. When the clutch pedal is depressed it pushes the clutch master cylinder plunger which hydraulically
actuates the clutch slave cylinder which actuates the clutch pressure plate diaphragm spring, releasing pressure
on the clutch disc which eliminates the engagement between the transmission and the engine.

DIAGNOSIS & TESTING

MANUAL TRANSMISSION & CLUTCH

2003 Ford Pickup F150

2003 TRANSMISSIONS Instruction Transmission, Clutch & Transfer Case - General Information - F150 Pickup

Inspection & Verification

It is important to get an accurate description of the complaint before any diagnosis can be performed. Ask
questions as to whether it occurs hot or cold, during shifting, driving at a particular speed or in a particular gear.
If possible, have the customer demonstrate the concern.

Additional Testing For 4x4 Applications

z

Check for any noise change when shifting the transfer case (7A195) between 2H, 4H, 4L or into
NEUTRAL.

z

With the vehicle at a complete stop and the transfer case in NEUTRAL, shift through all the gears and
evaluate noise at different engine RPM. Check for any noises in NEUTRAL at different engine RPM.

z

Refer to TRANSFER CASE - GENERAL INFORMATION for transfer case concerns.

SYMPTOM CHARTS

Symptom Chart-Instruction Transmission & Clutch

Fig. 4: Instruction Transmission & Clutch Symptom Chart (1 Of 7)
Courtesy of FORD MOTOR CO.

2003 Ford Pickup F150

2003 TRANSMISSIONS Instruction Transmission, Clutch & Transfer Case - General Information - F150 Pickup

Fig. 5: Instruction Transmission & Clutch Symptom Chart (2 Of 7)
Courtesy of FORD MOTOR CO.

2003 Ford Pickup F150

2003 TRANSMISSIONS Instruction Transmission, Clutch & Transfer Case - General Information - F150 Pickup