Market Position:
The 1998 Dodge RAM 3500 was a cornerstone of Dodge's heavy-duty truck lineup, targeting commercial users, fleet owners, and individuals requiring robust towing and hauling capabilities. This manual software represents an essential resource for maintaining and repairing these workhorses.
Competitive Analysis:
Competed directly with the Ford F-350 Super Duty and Chevrolet Silverado 3500 of the same era. The RAM 3500 distinguished itself with its distinctive styling, solid front axle (on many models), and powerful Magnum V8 and Cummins Turbo Diesel engine options.
Key Features:
Officially licensed, comprehensive coverage, digital format for easy access and searchability, detailed diagrams, step-by-step procedures, and factory-accurate information.
Systems Covered:
Engine Mechanical, Engine Control Systems (ECM/PCM), Fuel System, Ignition System, Cooling System, Exhaust System, Lubrication System, Transmission (Automatic & Manual), Drivetrain (Transfer Case, Axles, Driveshafts), Suspension (Front & Rear), Steering System, Brake System (Hydraulic & ABS), Electrical System (Charging, Starting, Lighting, Accessories), Body Control Modules (BCM), HVAC System, Interior Systems, Exterior Body Panels, Chassis Components, Diagnostic Trouble Codes (DTCs).
Procedures Included:
Routine Maintenance, Scheduled Maintenance, Component Removal & Installation, Reassembly Procedures, Troubleshooting Guides, Diagnostic Procedures, Electrical Schematics, Torque Specifications, Fluid Specifications, Special Tool Requirements, Engine Rebuilding Procedures, Transmission Overhaul, Brake System Bleeding & Repair, Suspension Alignment, Steering System Service, Body Panel Repair.
Technical Depth:
Comprehensive. Covers basic maintenance to complete engine and transmission overhauls, advanced electrical diagnostics, and detailed component troubleshooting. Includes factory-level diagnostic strategies and repair procedures.
Diagnostic Tools:
Covers the use of factory diagnostic scan tools (like DRB III) for engine and ABS diagnostics, as well as the interpretation of Diagnostic Trouble Codes (DTCs).
Torque Specs Wheel Lug:
Specific torque values for wheel lug nuts are provided, crucial for safe operation and preventing brake rotor warping. (Typically around 100-130 lb-ft, but exact value is in manual).
Tire Size Recommendations
Tire Size Recommendations:
Covers recommended tire sizes for various load ratings and configurations, including single rear wheel (SRW) and dual rear wheel (DRW).
Exterior Length:
Varies by cab and bed configuration. Crew Cab Long Bed: Approx. 255 inches.
Exterior Width:
Approx. 79.1 inches (excluding mirrors).
Exterior Height:
Approx. 77.7 inches.
Wheelbase:
Varies by cab and bed configuration. Crew Cab Long Bed: Approx. 164.5 inches.
Curb Weight:
Approx. 6,000 - 7,500 lbs, depending on configuration and powertrain.
Towing Capacity:
Up to 13,500 lbs (with appropriate fifth-wheel hitch and configuration).
Payload Capacity:
Up to 5,000 lbs (depending on configuration).
Front Track:
Approx. 67.9 inches.
Rear Track:
Approx. 66.0 inches (for Dually configuration).
Service Intervals Oil Diesel
Service Intervals Oil Diesel:
Diesel Engine Oil & Filter: Every 3,000-5,000 miles or 6 months, whichever comes first (depending on driving conditions and oil type). Refer to manual for specific severe vs. normal duty.
Service Intervals Oil Gasoline
Service Intervals Oil Gasoline:
Gasoline Engine Oil & Filter: Every 3,000 miles or 3 months. (Synthetic options may extend this).
Service Intervals Transmission Auto
Service Intervals Transmission Auto:
Automatic Transmission Fluid & Filter: Every 30,000-60,000 miles. (Severe use may require more frequent changes).
Service Intervals Transmission Manual
Service Intervals Transmission Manual:
Manual Transmission Fluid: Every 60,000 miles.
Fluid Specifications Engine Oil Diesel
Fluid Specifications Engine Oil Diesel:
Cummins 5.9L Diesel: API CG-4 or CH-4 rated diesel engine oil, SAE 15W-40 recommended. (Consult manual for specific year/emission requirements).
Fluid Specifications Engine Oil Gasoline
Fluid Specifications Engine Oil Gasoline:
8.0L V10 Magnum: API SJ rated, SAE 10W-30 or 10W-40 recommended. (Check manual for specific viscosity based on ambient temperature).
Fluid Specifications Transmission Auto
Fluid Specifications Transmission Auto:
ATF+3 (MS-7176) or equivalent.
Fluid Specifications Transmission Manual Nv4500
Fluid Specifications Transmission Manual Nv4500:
NV4500: SAE 75W-90 Synthetic Gear Oil (GL-4 rated is preferred to avoid damage to synchronizers).
Fluid Specifications Coolant
Fluid Specifications Coolant:
Ethylene Glycol based coolant, typically a 50/50 mix with distilled water. Mopar HOAT (Hybrid Organic Acid Technology) coolant is recommended. (Check manual for specific Mopar P/N).
Fluid Specifications Brake
Fluid Specifications Brake:
DOT 3 brake fluid.
Known Issues Nv4500 3Rd Gear
Known Issues Nv4500 3Rd Gear:
The 'grinding third gear' issue on the NV4500 manual transmission is common, often related to worn synchronizers or improper fluid levels/viscosity. The manual will detail diagnostic and repair procedures, including potential updates or modifications.
Known Issues Cummins Lift Pump
Known Issues Cummins Lift Pump:
The factory lift pump on the 5.9L Cummins can be a weak point. Upgraded pumps are common modifications, and the manual will provide diagnostic steps for fuel pressure issues.
Known Issues Idle Air Control Iac Gas
Known Issues Idle Air Control Iac Gas:
The Idle Air Control (IAC) valve on the V10 can become dirty or fail, leading to rough idling or stalling. The manual will detail cleaning and replacement procedures.
Known Issues Rear Main Seal Diesel
Known Issues Rear Main Seal Diesel:
Rear main seal leaks are not uncommon on high-mileage Cummins engines. The manual will detail the process for replacement, which involves clutch removal.
Service Intervals Air Filter
Service Intervals Air Filter:
Inspect every 15,000 miles or 12 months, replace as needed. More frequently in dusty conditions.
Service Intervals Fuel Filter Diesel
Service Intervals Fuel Filter Diesel:
Replace every 15,000-30,000 miles. Critical for the longevity of the injection system.
Service Intervals Spark Plugs Gasoline
Service Intervals Spark Plugs Gasoline:
Replace every 30,000-60,000 miles, depending on plug type (standard vs. platinum/iridium if applicable).