Engine Mechanical:
Engine removal/installation, cylinder head, block, crankshaft, pistons, connecting rods, camshaft, timing system, lubrication system, cooling system, fuel system components (injectors, pump, lines), emission controls
Engine Performance:
Engine diagnostics, performance tuning, troubleshooting of drivability issues, electronic engine controls (EEC) and sensors
Transmission Manual:
AX-5, AX-15 Manual Transmissions: Clutch system, gearbox disassembly/assembly, shifting mechanisms, transfer case (NP231, NP242) service and repair
Transmission Automatic:
AW4 Automatic Transmission: Hydraulic system, torque converter, gear sets, valve body, electronic control unit (ECU) interface, fluid service and repair
Drivetrain 4Wd:
Front and rear axle assemblies (Dana 30 front, Chrysler 8.25 rear), U-joints, CV joints, propeller shafts, differential service
Suspension Steering:
Front and rear suspension (leaf springs rear, coil springs front with track bar), shock absorbers, ball joints, tie rods, steering gearbox, power steering system
Brakes:
Front disc brakes, rear drum brakes (or optional rear discs), hydraulic system, parking brake, ABS system (if equipped), brake fluid specifications and bleeding procedures
Electrical System:
Battery, charging system (alternator), starting system (starter motor), ignition system, lighting system, horn, wiring diagrams, fuses, relays, diagnostic connectors
Body Interior:
Body panel removal/installation, doors, hood, tailgate, glass, interior trim, seats, headliner, body hardware
HVAC:
Heating, ventilation, and air conditioning system components, refrigerant handling, heater core, A/C compressor, blower motor
Fuel System Emissions:
Fuel pump, fuel filter, fuel lines, evaporative emission control system (EVAP), catalytic converter, exhaust system
Maintenance:
Scheduled maintenance, oil change procedures, filter replacements, fluid checks and top-offs, lubrication points, tire rotation
Troubleshooting:
Diagnostic flowcharts, symptom-based troubleshooting for engine, transmission, electrical, and HVAC issues
Repair:
Step-by-step repair instructions for virtually all mechanical and electrical components, including detailed disassembly and reassembly sequences
Diagnostics:
On-Board Diagnostics (OBD-I) information, diagnostic trouble codes (DTCs), sensor data interpretation, testing procedures for electronic components
Specifications Tolerances:
Tightening torques, wear limits, clearances, alignment specifications, component tolerances
Wiring Diagrams:
Detailed electrical schematic diagrams for all vehicle systems, component location charts
Special Tools:
Identification and usage of specialized tools required for specific repair procedures
Depth Level:
Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds, advanced diagnostics, and bodywork
Manual Transmission Standard:
AX-5 5-speed Manual (common with 2.5L, some 4.0L)
Manual Transmission Optional:
AX-15 5-speed Manual (common with 4.0L)
Automatic Transmission:
AW4 4-speed Automatic
Transfer Case Command Trac:
NP231 Command-Trac (Part-time 4WD)
Transfer Case Selec Trac:
NP242 Selec-Trac (Full-time 4WD)
Manual Transmission Fluid:
Mopar Manual Transmission Lubricant or equivalent (check manual for specific GL rating, typically GL-3 or GL-4)
Automatic Transmission Fluid:
Chrysler ATF+3 (Mopar)
Oil Change Interval:
Every 3,000 - 7,500 miles (10W-30 or 10W-40 recommended, consult manual for specifics)
Transmission Fluid Change Auto:
Every 30,000 - 60,000 miles (depending on driving conditions)
Coolant Change Interval:
Every 30,000 - 50,000 miles
Engine Oil Capacity 2.5L:
Approx. 5 US quarts (4.7 L) with filter
Engine Oil Capacity 4.0L:
Approx. 6 US quarts (5.7 L) with filter
Common Problems 4.0L:
Head gasket issues (particularly older 4.0L engines), rear main seal leaks, cracked exhaust manifolds (especially the 4.0L inline-six)
Common Problems General:
Rust (frame and body), worn leaf springs, AC system leaks, radiator and cooling fan issues, power steering pump noise