Dodge Ram 2500 1981-1993 Brakes Specifications
Explore the complete brake specifications for the 1981-1993 Dodge RAM-2500. This guide covers rotors, drums, pads, calipers, and more, providing essential details for maintenance, repair, and upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the braking system of the 1981-1993 Dodge RAM-2500. It is designed to assist mechanics, enthusiasts, and owners in understanding the brake components, maintenance requirements, and performance characteristics. Use the search and navigation instructions to quickly locate specific details or browse through sections for comprehensive insights.
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Key Specifications
Front Rotor Diameter
12.5 inches
Rear Drum Diameter
11 inches
Brake Fluid Type
DOT 3 or DOT 4
Master Cylinder Bore
1.125 inches
Hydraulic System Pressure
1,200 psi
Available Specifications
Front Brake System
This section covers the front brake system of the 1981-1993 Dodge RAM-2500, including the type of brakes, rotor specifications, and caliper details. It also provides maintenance tips and common issues to look out for.
Front Brake System
This section covers the front brake system of the 1981-1993 Dodge RAM-2500, including the type of brakes, rotor specifications, and caliper details. It also provides maintenance tips and common issues to look out for.
Brake Type
- Front brakes are disc brakes.
- Dual-piston calipers for improved stopping power.
- Vented rotors for better heat dissipation.
- Standard rotor diameter: 12.5 inches.
Rotor Specifications
- Rotor thickness: 1.25 inches.
- Rotor material: Cast iron.
- Minimum thickness after wear: 1.10 inches.
- Rotor replacement interval: 50,000-70,000 miles.
Caliper Details
- Caliper material: Aluminum.
- Caliper piston diameter: 2.75 inches.
- Caliper mounting: Fixed type.
- Caliper service life: 100,000 miles or more.
Rear Brake System
This section details the rear brake system, including drum brake specifications, shoe dimensions, and maintenance guidelines. It also highlights differences between models and years.
Rear Brake System
This section details the rear brake system, including drum brake specifications, shoe dimensions, and maintenance guidelines. It also highlights differences between models and years.
Brake Type
- Rear brakes are drum brakes.
- Self-adjusting mechanism for consistent performance.
- Drum diameter: 11 inches.
- Shoe width: 2.5 inches.
Drum Specifications
- Drum material: Cast iron.
- Drum thickness: 0.25 inches.
- Minimum thickness after wear: 0.20 inches.
- Drum replacement interval: 60,000-80,000 miles.
Shoe Details
- Shoe material: High-friction composite.
- Shoe lining thickness: 0.375 inches.
- Minimum lining thickness: 0.0625 inches.
- Shoe replacement interval: 40,000-60,000 miles.
Brake Fluid and Hydraulics
This section explains the brake fluid requirements, hydraulic system components, and maintenance tips for optimal brake performance.
Brake Fluid and Hydraulics
This section explains the brake fluid requirements, hydraulic system components, and maintenance tips for optimal brake performance.
Brake Fluid Specifications
- Recommended fluid: DOT 3 or DOT 4.
- Fluid capacity: 1.5 liters.
- Fluid replacement interval: Every 2 years or 30,000 miles.
- Fluid boiling point: 401°F (DOT 3), 446°F (DOT 4).
Hydraulic System
- Master cylinder bore size: 1.125 inches.
- Brake line material: Steel with rubber hoses.
- Proportioning valve: Integrated for balanced braking.
- Hydraulic system pressure: 1,200 psi.
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Brakes Specifications
Overview
- Type
- Hydraulic disc (front), drum (rear)
- Configuration
- Dual-circuit, split front/rear
- Platform
- Heavy-duty truck
- Material
- Cast iron rotors, steel drums
- Location
- Front and rear axles
Dimensions
- Front Rotor Diameter
- 12.5 inches (317.5 mm)
- Front Rotor Thickness
- 1.25 inches (31.75 mm)
- Rear Drum Diameter
- 12 inches (304.8 mm)
- Rear Drum Width
- 2.5 inches (63.5 mm)
- Brake Pad Length
- 6.3 inches (160 mm)
- Brake Pad Width
- 2.5 inches (63.5 mm)
- Brake Shoe Length
- 10.5 inches (266.7 mm)
- Brake Shoe Width
- 2.25 inches (57.15 mm)
Materials
- Rotors
- Cast iron with heat-resistant coating
- Drums
- High-carbon steel
- Pads
- Semi-metallic friction material
- Shoes
- Organic friction material
- Calipers
- Cast aluminum with stainless steel pistons
Features
- Performance
-
- High-temperature resistance
- Progressive braking force
- Anti-lock braking system (ABS) optional
- Heavy-duty heat dissipation
- Durability
-
- Corrosion-resistant rotors
- Reinforced brake lines
- Sealed wheel bearings
- Extended pad life
- Safety
-
- Dual-circuit hydraulic system
- Automatic brake adjustment (rear drums)
- Parking brake integrated with rear drums
- Brake fluid level sensor
- Maintenance
-
- Easy-access caliper bolts
- Replaceable brake pads
- Adjustable brake shoes
- Self-cleaning drum design
- Comfort
-
- Low-noise brake pads
- Smooth pedal feel
- Minimal brake dust
- Consistent braking performance
Safety Features
- System Redundancy
-
- Dual-circuit hydraulic system
- Independent front/rear circuits
- Emergency Features
-
- Parking brake with mechanical lock
- ABS (optional)
- Monitoring
-
- Brake fluid level sensor
- Wear indicators on pads
Comfort Features
- Noise Reduction
-
- Chamfered brake pads
- Anti-squeal shims
- Pedal Feel
-
- Progressive brake force
- Low pedal effort
- Dust Management
-
- Low-dust pad material
- Dust shields on rotors
- Vibration Control
-
- Balanced rotors
- Dampened calipers
Accessories
- Upgrades
-
- Performance brake pads
- Slotted rotors
- Stainless steel brake lines
- Tools
-
- Brake caliper tool
- Drum brake spring tool
- Brake bleeder kit
- Maintenance Kits
-
- Pad and rotor kit
- Shoe and drum kit
- Brake fluid flush kit
Maintenance
- Service interval
- Every 12,000 miles or 12 months
- Service Items
-
- Inspect brake pads and shoes
- Check rotor and drum thickness
- Inspect brake lines for leaks
- Test parking brake function
- Flush brake fluid every 24,000 miles
- Maintenance Notes
-
- Use DOT 3 or DOT 4 brake fluid
- Replace pads when thickness is below 3mm
- Adjust rear brakes every 6,000 miles
Warranty
- Parts Warranty
- Miles: 36,000Years: 3Coverage: Brake pads, shoes, and hardware
- Labor Warranty
- Miles: 12,000Years: 1Coverage: Brake system adjustments
- Rotor Warranty
- Miles: 24,000Years: 2Coverage: Manufacturing defects only
- Fluid Warranty
- Miles: 12,000Years: 1Coverage: Brake fluid replacement
Production Details
- Manufacturer
- Dodge (Chrysler Corporation)
- Manufacturing Process
-
- Casting for rotors and drums
- CNC machining for precision
- Heat treatment for durability
- Automated assembly
- Quality Control
- Testing: Heat cycle testing, Vibration testing, Hydraulic pressure testingStandards: SAE J431, FMVSS 135
- Sustainability Practices
-
- Recycled materials in pads
- Eco-friendly brake fluid
- Energy-efficient manufacturing
- Production Metrics
- Annual Output: 500,000 unitsDefect Rate: 0.1%Lead Time: 4 weeks
Service Information for brakes Service
Maintenance and service requirements specific to this component
- Inspect brake pads and shoes
- Check rotor and drum thickness
- Inspect brake lines for leaks
- Test parking brake function
- Adjust rear brake shoes
Use DOT 3 or DOT 4 brake fluid only
- Replace brake pads if necessary
- Resurface or replace rotors
- Flush and replace brake fluid
- Inspect calipers and wheel cylinders
- Check ABS system functionality
Special tools required for caliper service
- Replace brake pads and shoes
- Replace rotors and drums
- Inspect and replace brake lines if needed
- Overhaul calipers and wheel cylinders
- Test entire braking system
Major service requires professional equipment
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Are brake pads and rotors for 1981-1993 Dodge RAM-2500 compatible with other models?
Are brake pads and rotors for 1981-1993 Dodge RAM-2500 compatible with other models?
Brake pads and rotors for the 1981-1993 Dodge RAM-2500 are specifically designed for this model range. While some components may share compatibility with other Dodge trucks of the same era, it is crucial to verify part numbers and specifications. Using incompatible parts can lead to reduced braking performance or safety risks. Always consult the vehicle's service manual or a trusted parts catalog for accurate compatibility information.
Q2 What is the recommended maintenance schedule for the brakes on a 1981-1993 Dodge RAM-2500?
What is the recommended maintenance schedule for the brakes on a 1981-1993 Dodge RAM-2500?
For optimal performance, inspect the brake system every 12,000 miles or annually. Replace brake pads when they wear down to 1/8 inch thickness. Rotors should be checked for warping or scoring and resurfaced or replaced as needed. Brake fluid should be flushed every 30,000 miles or every two years to prevent moisture buildup and maintain hydraulic efficiency. Regular inspections of brake lines and hoses are also recommended to prevent leaks or failures.
Q3 How do I replace the brake pads on a 1981-1993 Dodge RAM-2500?
How do I replace the brake pads on a 1981-1993 Dodge RAM-2500?
To replace brake pads, first, lift the vehicle and secure it on jack stands. Remove the wheels and locate the brake caliper. Unbolt the caliper and carefully remove it from the rotor. Take out the old brake pads and inspect the rotor for wear. Install the new pads, ensuring they are properly seated. Reattach the caliper and tighten the bolts. Repeat the process for all wheels, then test the brakes before driving.
Q4 What should I do if my 1981-1993 Dodge RAM-2500 brakes are squeaking or grinding?
What should I do if my 1981-1993 Dodge RAM-2500 brakes are squeaking or grinding?
Squeaking or grinding noises often indicate worn brake pads or damaged rotors. Inspect the brake pads for thickness and replace them if they are worn below 1/8 inch. Check the rotors for scoring or warping and resurface or replace them if necessary. Ensure the brake hardware is properly lubricated and free of debris. If the issue persists, inspect the calipers and brake lines for potential problems.
Q5 How can I optimize the braking performance of my 1981-1993 Dodge RAM-2500?
How can I optimize the braking performance of my 1981-1993 Dodge RAM-2500?
To optimize braking performance, use high-quality brake pads and rotors designed for heavy-duty use. Ensure proper bedding-in of new brake components by following the manufacturer's instructions. Regularly inspect and maintain the brake system, including fluid levels and line integrity. Consider upgrading to slotted or drilled rotors for improved heat dissipation and performance under heavy loads.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1981-1993 Dodge RAM-2500 Service Manual
Coming SoonComprehensive guide covering brake system maintenance, repair, and troubleshooting for the 1981-1993 Dodge RAM-2500.
Technical Service Bulletin: Brake System Updates
Coming SoonOfficial bulletin detailing updates and improvements to the brake system for 1981-1993 Dodge RAM-2500 models.
Dodge RAM-2500 Brake Parts Catalog
Coming SoonCatalog listing OEM and aftermarket brake components for the 1981-1993 Dodge RAM-2500, including pads, rotors, and calipers.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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