Engine Mechanical:
Full coverage including disassembly, inspection, assembly, and adjustment of engine components.
Engine Lubrication System:
Oil pump, oil filter, oil passages, oil pan, lubrication system diagnostics and repair.
Engine Cooling System:
Radiator, fan, water pump, thermostat, coolant hoses, coolant types, pressure testing, flushing, and repair.
Fuel System:
Fuel pump, fuel injectors, fuel filter, fuel lines, fuel tank, evaporative emission control (EVAP), fuel pressure testing, and diagnostics.
Ignition System:
Spark plugs, ignition coils, ignition control module (ICM), spark plug wires, timing, and diagnostics.
Exhaust System:
Exhaust manifold, catalytic converter, mufflers, pipes, oxygen sensors (O2 sensors), and emissions control systems.
Engine Electrical System:
Alternator, starter motor, battery, wiring harnesses, fuses, relays, and diagnostic trouble codes (DTCs).
Transmission Manual:
Clutch system, clutch disc, pressure plate, flywheel, transmission case, gear sets, synchronizers, shift forks, and repair procedures.
Transmission Automatic:
Torque converter, transmission fluid, valve body, planetary gear sets, hydraulic controls, electronic controls, and overhaul procedures.
Transfer Case:
NV241OR (Atlas) transfer case specifications, operation, maintenance, and repair.
Driveshafts And Axles:
Front and rear driveshafts, universal joints (U-joints), CV joints, axle shafts, differentials (Dana 30 front, Dana 35c rear), and bearing services.
Suspension System:
Front and rear suspension components, control arms, coil springs, shock absorbers, bushings, sway bars, and alignment procedures.
Steering System:
Steering column, steering gear box, power steering pump, steering fluid, tie rods, drag links, and steering system diagnostics.
Braking System:
Front disc brakes, rear drum brakes (or optional rear discs), brake calipers, brake pads, brake rotors, brake drums, master cylinder, brake lines, ABS (Anti-lock Braking System) diagnostics, and bleeding procedures.
Wheel And Tire System:
Wheel specifications, tire sizes, lug nut torque, tire rotation, balancing, and wheel bearing service.
Body And Frame:
Body construction, frame inspection, door mechanisms, hood, tailgate, seats, interior trim, body panel replacement, and rust prevention.
HVAC System:
Heating, ventilation, and air conditioning (HVAC) system components, refrigerant types, charging procedures, leak detection, and troubleshooting.
Electrical System Body:
Lighting (headlights, taillights, interior), wipers, horn, power windows, power locks, fuse box diagrams, and electrical component testing.
Dashboard And Instruments:
Instrument cluster, gauges, warning lights, switch operations, and dashboard component replacement.
Safety Systems:
Seat belts, airbags (if equipped), child seat anchors, and safety component inspection.
Routine Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, lubrication, tire rotation, and battery service.
Diagnostic Procedures:
Step-by-step diagnostic charts for common problems, symptom-based troubleshooting, and use of diagnostic tools.
Repair Procedures:
Detailed instructions for component removal, installation, adjustment, and rebuilding for all major systems.
Troubleshooting Guides:
Specific guides for identifying and resolving common malfunctions and drivability issues.
Component Rebuilds:
Overhaul procedures for engines, transmissions, axles, and other major mechanical components.
Torque Specifications:
Precise torque values for all fasteners and critical components.
Wiring Diagrams:
Comprehensive electrical wiring diagrams for all vehicle systems.
Special Tools:
Identification and usage instructions for any specialized tools required for specific repair procedures.
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds.
Detail Level:
Highly detailed with exploded views, diagrams, and step-by-step instructions.
Diagnostics Capability:
Advanced diagnostic information, including symptom analysis and fault code interpretation.
Oil And Filter Change:
Every 3,000 miles (4,800 km) or 3 months, whichever comes first (for conventional oil). 5,000 miles (8,000 km) or 6 months with synthetic oil and filter.
Engine Air Filter Replacement:
Every 15,000 miles (24,000 km) or 12 months, inspect more frequently in dusty conditions.
Spark Plug Replacement:
Every 30,000 miles (48,000 km) for standard plugs, 100,000 miles (160,000 km) for platinum/iridium plugs.
Coolant Flush And Replace:
Every 30,000 miles (48,000 km) or 2 years.
Transmission Fluid Change Auto:
Every 30,000 miles (48,000 km) or 2 years.
Transmission Fluid Change Manual:
Every 60,000 miles (96,000 km) or 4 years.
Differential Fluid Change:
Every 30,000 miles (48,000 km) or 2 years, especially if used for off-roading.
Power Steering Fluid:
Mopar Power Steering Fluid (or equivalent ATF+4/Dexron III)
Brake Fluid:
DOT 3 or DOT 4.
Crankshaft Position Sensor:
Failure can lead to no-start or stalling issues.
Ignition Coil Failure:
Can cause misfires and poor engine performance.
Clutch Wear:
Clutch wear can be accelerated with aggressive driving or off-road use.
Radiator Leaks:
Plastic end tanks can develop leaks over time.
Oil Filter Adapter Gasket Leaks:
Common source of oil leaks on the 4.0L engine.
Transfer Case Chain Slap:
Can be an indicator of chain stretch in the NV241OR transfer case.
Exhaust Manifold Cracks:
The cast iron exhaust manifold can develop cracks due to heat cycles.