Engine Mechanical:
Engine assembly, disassembly, cylinder head, pistons, crankshaft, camshafts, timing systems, lubrication system, cooling system.
Engine Performance:
Fuel injection, ignition system, emissions control systems, engine management.
Transmission Manual:
Manual transmission (NV3550) disassembly, assembly, inspection, and repair.
Transmission Automatic:
Automatic transmission (42RLE) disassembly, assembly, inspection, and repair.
Drivetrain:
Transfer case (NP231), front and rear axle assemblies (Dana 30, Dana 35c), driveshafts, CV joints, differentials.
Suspension:
Front and rear suspension systems, coil springs, shock absorbers, control arms, stabilizer bars.
Steering:
Steering system components, power steering pump, steering gear, steering column, tie rods.
Brakes:
Front and rear brake systems (disc/drum), ABS system, brake fluid, hydraulic lines, master cylinder, calipers, wheel cylinders.
Electrical System:
Battery, charging system (alternator), starting system (starter motor), lighting, fuses, relays, wiring diagrams, body control module.
Body And Frame:
Body panel removal/installation, door mechanisms, convertible top, interior trim, frame repair.
Heating Ventilation Air Conditioning HVAC:
HVAC system components, compressor, condenser, evaporator, heater core, refrigerant system.
Scheduled Maintenance:
Oil changes, filter replacements, fluid checks, tire rotations, belt inspections.
Engine Rebuilding:
Complete engine disassembly, cleaning, inspection, machining, and reassembly procedures.
Transmission Overhaul:
Detailed overhaul procedures for both manual and automatic transmissions.
Brake Service:
Brake pad/shoe replacement, rotor/drum resurfacing or replacement, caliper/wheel cylinder servicing, bleeding the brake system.
Suspension And Steering Repair:
Replacement of shocks, struts, ball joints, tie rod ends, steering gear replacement.
Electrical Diagnostics:
Troubleshooting using wiring diagrams, testing components like alternators, starters, and sensors.
Body Repair And Alignment:
Procedures for body panel adjustments and potential frame alignment checks.
Convertible Top Service:
Maintenance and repair procedures for the soft top.
Fuel System Diagnosis And Repair:
Fuel pump testing, injector cleaning/replacement, fuel pressure checks.
Cooling System Servicing:
Radiator service, water pump replacement, thermostat replacement, flushing the cooling system.
Depth:
Factory-level detail, suitable for professional technicians and advanced DIY enthusiasts.
Diagnostic Charts:
Includes diagnostic charts and flowcharts for efficient troubleshooting.
Torque Specifications:
Precise torque specifications for all critical fasteners.
Wiring Diagrams:
Detailed and accurate electrical wiring diagrams for all circuits.
Special Tools:
Lists and descriptions of special tools required for specific repairs.
Engine Code:
4.0L Inline-6 (e.g., AMC 242)
Displacement:
3960 cc (242 cubic inches)
Configuration:
Inline 6-Cylinder, Overhead Valve (OHV)
Bore X Stroke:
3.875 in x 3.562 in (98.4 mm x 90.5 mm)
Horsepower:
181 hp @ 4600 rpm
Torque:
220 lb-ft @ 3200 rpm
Engine Code:
2.5L Inline-4 (e.g., AMC 150)
Displacement:
2507 cc (153 cubic inches)
Configuration:
Inline 4-Cylinder, Overhead Valve (OHV)
Horsepower:
114 hp @ 4500 rpm
Torque:
145 lb-ft @ 3500 rpm
Fuel Delivery:
Electronic Multi-Point Fuel Injection (MPI)
Fuel Type:
Unleaded gasoline (87 octane recommended)
Oil Change Interval:
Every 3,000-5,000 miles or 6 months (depending on driving conditions).
Transmission Fluid Change:
Manual: Inspect annually. Automatic: Every 30,000-50,000 miles.
Coolant Change Interval:
Every 30,000 miles or 2 years.
Engine Oil Type:
API certified SAE 10W-30 or 10W-40 (check owner's manual for specific viscosity under different temperature ranges).
Engine Oil Capacity:
5.0 US quarts (4.7 liters) with filter for 4.0L; 4.0 US quarts (3.8 liters) for 2.5L.
Automatic Transmission Fluid:
Mopar ATF+4 or equivalent.
Manual Transmission Fluid:
NV3550: Mopar Manual Transmission Lubricant or equivalent (e.g., SAE 75W-80W GL-4).
Transfer Case Fluid:
Mopar Transfer Case Lubricant or equivalent (e.g., SAE 75W-90 GL-5).
Coolant Type:
Chrysler/Mopar OAT (Organic Acid Technology) Antifreeze/Coolant (Orange) or equivalent.
Common Wear Items:
Front track bar bushings, control arm bushings, sway bar links, clutch wear (manual transmission), water pump, radiator.
Engine Common Issues:
Oil leaks from valve cover gasket or oil pan gasket, serpentine belt tensioner failure, carbon buildup on intake valves (less common for 4.0L but possible).
Drivetrain Common Issues:
Rear axle seal leaks (Dana 35c), transfer case chain stretch or wear.
Electrical Common Issues:
Actuator failures (e.g., HVAC blend doors), intermittent power issues due to corroded grounds or wiring harnesses.