1997 F-250/350/Super Duty

Section 06-02: Brakes, Rear Drum

1997 F-250 Heavy Duty and F-350 4x2 and 4x4 Vehicles Workshop Manual

SPECIFICATIONS

LUBRICANT/ADHESIVE/CLEANER SPECIFICATIONS
Description	Part Number	Ford Specification
Metal Brake Parts Cleaner	F3AZ-19579-SA	—
Silicone Brake Caliper Grease and Dielectric Compound	D7AZ-19A331-A (Motorcraft WA-10)	ESE-M1C171-A
High Performance DOT 3 Brake Fluid	C6AZ-19542-AA	ESA-M6C25-A and DOT 3A

BRAKE SPECIFICATIONS
Description	F-250	F-350/DRW^a
Axle Usage — Front	4200 4600	4200 4600
Axle Usage — Rear	5400 6250	6340/7400/ 7800/8250
Type	DSSA	DSSA
Size (Inches)	12x3.0	12-1/8x3.5
Cylinder Diameter (Inches)^b	1.0625	1.1875
Lining Thickness (Inches) — Primary	0.204	0.220
Lining Thickness (Inches) — Secondary	0.267	0.283
Lining Length (Inches) — Primary	11.40	11.57
Lining Length (Inches) — Secondary	12.86	13.05
Area per Brake (Sq. Inches) — Primary	38.46	40.49
Area per Brake (Sq. Inches) — Secondary	38.46	45.67
Total Area per Brake (Sq. Inches)	72.55	86.17
Total Area per Axle (Sq. Inches)	145.1	172.34
Swept Area per Axle (Sq. Inches)	226.20	266.64

^a F-Super Duty use disc brakes in rear.

^b Maximum allowable hone 0.003.

Brake Drum

Brake drums (1126) must be replaced if inside diameter is outside maximum limit. Maximum drum diameter is stamped on the outside of the brake drum.

WHEEL TORQUE SPECIFICATIONS
Description	Nm	Lb-Ft
8-Lug Wheel — 9/16-18	170-230	126-170

NOTE: Torque specifications are for clean, dry, dirt- and paint-free bolt and nut threads. Never use oil or grease on studs or nuts.