Manual Value Proposition:
Convenient, cost-effective, and comprehensive digital service solution compared to traditional printed manuals
Competitor Comparison:
Outperforms outdated printed manuals in terms of accessibility, searchability, and update potential (though this version is for a specific year).
Software Advantage:
Instant access, easy navigation, push-button information retrieval, compatibility across multiple devices
Content Licensing:
Official licensing ensures accuracy and completeness derived from factory data
Software Platform Compatibility:
PC, Laptop, Smartphone, Tablet (via web browser)
Access Duration:
1 Year (with discounts for renewal)
Information Source:
Licensed OE (Original Equipment) Materials
Estimated Pages:
Extensive (equivalent to hundreds of printed pages)
Manual Category:
Factory Service Manual / Repair Manual
Target Audience:
DIY Mechanics, Professional Technicians
Digital Format:
Online Software / Web-Based Access
Engine:
Engine mechanical, diagnostics, tuning, overhaul, cooling system, lubrication system, fuel system (carbureted and injected), emission control systems
Transmission:
Manual and automatic transmission service, diagnosis, and repair (e.g., A727, A518, NV4500 if applicable)
Drivetrain:
Clutch, driveshafts, universal joints, rear axle assembly (differential, axle shafts), front axle (if 4WD)
Brakes:
Hydraulic brake system, power assist, front disc brakes, rear drum brakes, parking brake, ABS (if equipped)
Suspension:
Front suspension (e.g., Twin Traction Beam), rear suspension (leaf springs), steering system (power steering, steering gear), wheel alignment
Electrical:
Complete wiring diagrams, charging system, starting system, ignition system, lighting, instrumentation, power accessories, diagnostic connectors
Heating Air Conditioning:
HVAC system components, operation, diagnosis, and repair, refrigerant handling
Body:
Body panels, doors, glass, interior trim, bumpers, safety restraints (seat belts)
Frame Chassis:
Frame construction, mounting points, corrosion protection
Maintenance:
Routine service, oil changes, filter replacements, lubrication, fluid level checks
Troubleshooting:
Diagnostic procedures, fault code interpretation (if applicable), symptom-based troubleshooting guides
Repair:
Step-by-step repair instructions for all major components and systems
Overhaul:
Complete engine and transmission rebuild procedures
Installation:
Procedures for replacing components, alignment adjustments
Diagnostic Capability:
Advanced diagnostics, including electrical system troubleshooting and component testing
Rebuild Procedures:
Detailed instructions for complete engine and transmission rebuilds
Technical Data:
Torque specifications, clearances, tolerances, fluid capacities, electrical resistance values
Engine Code Example:
318 (5.2L V8 Magnum - likely option)
Engine Description:
The D250, as a 3/4 ton model, would typically be equipped with robust V8 gasoline engines or a Cummins turbodiesel. For 1991, likely options include the 5.2L Magnum V8 (318ci) or potentially the 5.9L Magnum V8 (360ci). A significant offering for this generation was the Cummins 5.9L (359ci) 12-valve inline-6 turbodiesel.
Horsepower Range Gas:
Approx. 170-230 hp (depending on specific V8 engine and tuning)
Torque Range Gas:
Approx. 250-300 lb-ft (depending on specific V8 engine)
Diesel Engine Availability:
Highly probable availability of the Cummins 5.9L 12V Turbodiesel (175 hp, 400 lb-ft torque range)
Fuel Delivery Gas:
Throttle Body Injection (TBI) or Multi-port Fuel Injection (MPI) for Magnum engines
Fuel System Diesel:
Rotary injection pump (VE) or Inline injection pump (P7100) for Cummins diesel, often with turbocharging
Body Styles:
Regular Cab, Club Cab (Extended Cab)
Wheelbase Options:
Common wheelbases for D250: 115" (Short Bed Regular Cab), 131" (Long Bed Regular Cab), 148" (Long Bed Club Cab)
Gvwr Range:
Gross Vehicle Weight Rating (GVWR) typically in the 6,200 - 8,500 lbs range for D250
Curb Weight Range:
Curb weight varies significantly based on configuration, typically 4,500 - 5,500 lbs
Crash Test Data Availability:
Limited readily available official NHTSA crash test data for this specific vintage pickup, but the manual will cover safety system maintenance.
ABS Availability:
Anti-lock Braking System (ABS) was optional on some models, particularly rear-wheel ABS.
Seat Belts:
Standard three-point seat belts for front occupants, lap belts for rear (Club Cab)
Oil Change Interval:
Typically every 3,000-5,000 miles or 3-6 months, depending on driving conditions. Manual will provide precise intervals.
Transmission Fluid Change:
Recommended every 30,000-60,000 miles for automatic transmissions, less frequent for manuals. Manual will specify.
Coolant Flush:
Typically every 24,000-30,000 miles or 2 years. Manual will detail.
Engine Oil Type:
API SF or SG classification, SAE 10W-30 or 10W-40 often recommended. Diesel engines may require specific diesel oils (e.g., API CD).
Transmission Fluid Auto:
ATF+3 or equivalent for A727/A518 transmissions.
Transmission Fluid Manual:
Gear oil, typically SAE 75W-90 or 80W-90 GL-4/GL-5. Manual will specify.
Coolant Type:
Ethylene glycol based coolant, typically a 50/50 mix with distilled water. Green color common.
Common Wear Items:
Ball joints, tie rod ends, u-joints, leaf spring bushings, radiator, water pump, brake components, exhaust systems.
Diesel Specific Concerns:
Fuel supply issues (lift pump, filter heater), exhaust manifold cracking, injector pump timing (for older mechanical systems).
Electrical Quirks:
Flickering dash lights, headlight switch issues, alternator problems can occur with age.
Dodge Truck Legacy:
Dodge has a long history of producing rugged and capable pickup trucks, often positioned as workhorses.
Ram Pickup Lineage:
The 1991 model is part of the second generation (1972-1993) Ram trucks, which saw significant design updates and powertrain advancements throughout its run. The 'D' designation signifies a Dodge 2-wheel drive pickup, while '250' indicates its 3/4 ton classification.
Manufacturing Location:
Primarily Warren Truck Assembly Plant, Michigan, USA
Vehicle Awards:
While specific awards for the 1991 D250 are not widely publicized, the Cummins turbodiesel option gained significant industry recognition for its durability and towing capabilities.
Consumer Ratings Historical:
Generally regarded as a robust and reliable work truck, especially with the Cummins engine.
Manual Certification:
Licensed OE material, signifying factory authenticity and accuracy.