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Disc Brake System: Specifications Chevrolet Silverado 3500

Mechanical - Hydraulic

Fastener Tightening Specifications

Application	Specification
Application	Metric	English
Backing Plate Bolts	135 N.m	100 lb ft
Brake Caliper Mounting Bolt Front	108 N.m	80 lb ft
Brake Caliper Mounting Bolt Rear (15 series)	42 N.m	31 lb ft
Brake Caliper Mounting Bolt Rear (25/35 series)	108 N.m	80 lb ft
Brake Hose to Caliper Bolt, Front	40 N.m	30 lb ft
Brake Hose to Caliper Bolt, Rear	40 N.m	30 lb ft
Caliper Mounting Bracket Bolt Rear (JC5/JH5)	200 N.m	148 lb ft
Caliper Mounting Bracket Bolt Rear (JH6)	165 N.m	122 lb ft
Caliper Mounting Bracket Bolt Rear (JH7)	300 N.m	221 lb ft
Caliper Mounting Bracket Bolt Rear (NYS)	200 N.m	148 lb ft
Caliper Mounting Bracket to Knuckle, Front (15 series)	175 N.m	129 lb ft
Caliper Mounting Bracket to Knuckle, Front (25/35 series)	300 N.m	221 lb ft
Park Brake Equalizer	3.5 N.m	31 lb in
Quarter Shaft Shield	25 N.m	18 lb ft

Fastener Tightening Specifications

Disc Brake Component Specifications

Application	Specification
Application	Metric	English
Front Brakes JC3/JH1
Rotor Discard Thickness *	27.50 mm	1.082 in
Rotor Minimum Allowable Thickness After Refinish	28.0 mm	1.10 in
Rotor Thickness (new)	29.0 mm	1.14 in
Rotor Maximum Allowable Lateral Runout	0.13 mm	0.005 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Front Brakes JC4
Rotor Discard Thickness *	27.50 mm	1.082 in
Rotor Minimum Allowable Thickness After Refinish	28.0 mm	1.10 in
Rotor Thickness (new)	29.0 mm	1.14 in
Rotor Maximum Allowable Lateral Runout	0.13 mm	0.005 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Front Brakes JH2
Rotor Discard Thickness *	27.50 mm	1.082 in
Rotor Minimum Allowable Thickness After Refinish	28.0 mm	1.10 in
Rotor Thickness (new)	29.0 mm	1.14 in
Rotor Maximum Allowable Lateral Runout	0.13 mm	0.005 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Front Brakes JH6
Rotor Discard Thickness *	36.50 mm	1.437 in
Rotor Minimum Allowable Thickness After Refinish	37.0 mm	1.46 in
Rotor Thickness (new)	38.0 mm	1.50 in
Rotor Maximum Allowable Lateral Runout	0.13 mm	0.005 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Front Brakes JH7
Rotor Discard Thickness *	36.50 mm	1.437 in
Rotor Minimum Allowable Thickness After Refinish	37.0 mm	1.46 in
Rotor Thickness (new)	38.0 mm	1.50 in
Rotor Maximum Allowable Lateral Runout	0.13 mm	0.005 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Rear Brakes JC3/JH1
Rotor Discard Thickness *	18.50 mm	0.728 in
Rotor Minimum Allowable Thickness After Refinish	19.0 mm	0.748 in
Rotor Thickness (new)	20.0 mm	0.787 in
Rotor Maximum Allowable Lateral Runout	0.13 mm	0.005 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Rear Brakes JC4
Rotor Discard Thickness *	28.50 mm	1.122 in
Rotor Minimum Allowable Thickness After Refinish	29.0 mm	1.142 in
Rotor Thickness (new)	30.0 mm	1.181 in
Rotor Maximum Allowable Lateral Runout	0.13 mm	0.005 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Rear Brakes JH2
Rotor Discard Thickness *	28.50 mm	1.122 in
Rotor Minimum Allowable Thickness After Refinish	29.0 mm	1.142 in
Rotor Thickness (new)	30.0 mm	1.181 in
Rotor Maximum Allowable Lateral Runout	0.13 mm	0.005 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Rear Brakes JH6
Rotor Discard Thickness *	27.50 mm	1.082 in
Rotor Minimum Allowable Thickness After Refinish	28.0 mm	1.102 in
Rotor Thickness (new)	29.0 mm	1.141 in
Rotor Maximum Allowable Lateral Runout	0.13 mm	0.005 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Rear Brakes JH7
Rotor Discard Thickness *	28.5 mm	1.122 in
Rotor Minimum Allowable Thickness After Refinish	29.0 mm	1.142 in
Rotor Thickness (new)	30.0 mm	1.181 in
Rotor Maximum Allowable Lateral Runout	0.13 mm	0.005 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
* All brake rotors have a discard dimension cast into them. Replace any rotor that does not meet this specification. After refinishing the rotor, replace any rotor that does not meet the minimum thickness specifications.

Disc Brake Component Specifications