Engine Mechanical:
Comprehensive coverage of 4.0L (242ci) inline-6 cylinder engine, including disassembly, assembly, inspection, and repair procedures for all major components (cylinder head, block, crankshaft, camshaft, pistons, connecting rods, valvetrain).
Engine Electrical:
Detailed wiring diagrams, component testing procedures for ignition system, fuel injection system (MPI), starting and charging system, sensors, actuators, and engine control module (ECM) diagnostics.
Transmission Manual:
Repair and overhaul procedures for the AX-15 5-speed manual transmission, including clutch system, shift linkages, and internal component specifications.
Transmission Automatic:
Overhaul and diagnostic procedures for the 30RH 3-speed automatic transmission, including torque converter, valve body, hydraulic circuits, and electronic controls.
Drivetrain 4Wd:
Detailed information on the Command-Trac NV242 transfer case, including operation, maintenance, and repair of its part-time 2WD, 4WD High, 4WD Low, and Neutral modes. Coverage for front and rear differentials, axle shafts, U-joints, and driveshafts.
Suspension:
Complete service information for the front and rear suspension systems, including leaf spring and solid axle (front and rear) design. Procedures for shock absorber replacement, ball joint inspection, control arm bushings, and steering linkage.
Brakes:
Detailed procedures for front disc brakes (calipers, rotors, pads) and rear drum brakes (shoes, drums, wheel cylinders). Anti-lock Braking System (ABS) diagnostics and repair for models equipped with it. Brake bleeding procedures and specifications.
Steering:
Service and repair of the power steering system, including steering gear box, pump, hoses, and steering column. Wheel alignment specifications and procedures.
Fuel System:
Inspection, testing, and repair of the multi-point fuel injection (MPI) system, including fuel pump, injectors, fuel pressure regulator, fuel filter, and evaporative emissions control (EVAP) system.
Cooling System:
Service and maintenance of the radiator, water pump, thermostat, coolant hoses, and cooling fan (mechanical or electric). Coolant type and capacity specifications.
Exhaust System:
Inspection and replacement procedures for exhaust manifolds, catalytic converter, muffler, and exhaust pipes. Oxygen sensor (O2 sensor) testing and replacement.
Electrical Body:
Comprehensive wiring diagrams for lighting (headlights, taillights, interior), power windows, power locks, wipers, horn, and instrument cluster. Fuses, relays, and circuit breaker locations and specifications.
HVAC:
Service and repair of the heating, ventilation, and air conditioning (HVAC) system, including blower motor, evaporator, condenser, refrigerant lines, and controls.
Body And Frame:
Procedures for body panel repair, door mechanisms, glass replacement, bumper service, and frame inspection. Underbody protection and rust prevention guidance.
Routine Maintenance:
Detailed step-by-step instructions for oil changes, filter replacements (oil, air, fuel), spark plug replacement, tire rotations, and lubrication points.
Diagnostics Troubleshooting:
Extensive diagnostic flowcharts and symptom-based troubleshooting guides for common and uncommon vehicle issues, including check engine light (CEL) diagnosis and drivability problems.
Component Removal Installation:
Precise instructions for removing, overhauling, and reinstalling virtually every component of the vehicle, from minor sensors to major powertrain assemblies.
Engine Rebuild:
Complete engine overhaul procedures, including detailed specifications for all internal engine parts, torque sequences, and machining recommendations.
Transmission Rebuild:
In-depth rebuild instructions for both manual and automatic transmissions, covering all internal components and hydraulic circuits.
Brake Service Repair:
Step-by-step guides for brake pad replacement, rotor resurfacing/replacement, brake caliper service, and brake bleeding for both standard and ABS systems.
Electrical System Repair:
Detailed troubleshooting for electrical faults using wiring diagrams, including component testing and harness repair techniques.
Suspension Steering Alignment:
Procedures for replacing suspension components, adjusting steering alignment, and diagnosing steering system issues.
Body Panel Replacement:
Instructions for removing and installing body panels, doors, windows, and related hardware.
Diagnostic Capabilities:
Advanced diagnostic information, including OBD-II (On-Board Diagnostics II) code explanations, sensor data interpretation, and oscilloscope usage recommendations for troubleshooting complex issues.
Specification Accuracy:
Precise torque specifications, clearance measurements, fluid capacities, and tolerances for all mechanical and electrical components.
Diagnostic Tools:
Mentions and guidance on using specialized diagnostic tools and equipment required for specific repair procedures and system tests.
Component Rebuilding:
Comprehensive instructions for the complete overhaul and rebuilding of major vehicle systems, including engines and transmissions.
Transmission Type Standard:
AX-15 5-Speed Manual Transmission
Transmission Type Optional:
30RH 3-Speed Automatic Transmission
Transfer Case Options:
Selec-Trac NV242 (Part-Time 2WD, Full-Time 4WD, 4WD Low) or Command-Trac NV231 (Part-Time 2WD, 4WD High, 4WD Low)
Fluid Specifications Automatic
Automatic Transmission Fluid:
ATF+4 (Chrysler Material Standard MS-9602) or equivalent. Capacity: 6.0 US quarts (5.7 liters)
Fluid Specifications Manual
Manual Transmission Fluid:
Mopar Manual Transmission Lubricant (or equivalent DEXRON III/MERCON ATF for early AX-15 models). Capacity: 2.4 US quarts (2.3 liters)
Fluid Specifications Transfer Case
Transfer Case Fluid:
Mopar Transfer Case Lubricant (or equivalent DEXRON III/MERCON ATF). Capacity: 1.7 US quarts (1.6 liters) for NV242, 1.4 US quarts (1.3 liters) for NV231.
Oil Change Interval:
Every 3,000-5,000 miles (4,800-8,000 km) or every 6 months, depending on driving conditions. Refer to manual for specific recommendations.
Air Filter Replacement:
Every 15,000 miles (24,000 km) or annually. Inspect more frequently in dusty conditions.
Spark Plug Replacement:
Every 30,000 miles (48,000 km) with standard plugs; up to 100,000 miles with platinum or iridium plugs (if applicable, though less common for '97 4.0L).
Transmission Fluid Change Automatic:
Every 30,000 miles (48,000 km) or every 24 months. Filter replacement recommended concurrently.
Transmission Fluid Change Manual:
Every 45,000 miles (72,000 km) or 36 months.
Coolant Type:
Mopar Antifreeze/Coolant (50/50 mix with distilled water), or equivalent HOAT (Hybrid Organic Acid Technology) coolant.
Power Steering Fluid Type:
Mopar Power Steering Fluid (or equivalent ATF DEXRON II/III for some models).
Common Failures:
Cracked cylinder heads (especially pre-late '90s models, though the '97 is generally improved), differential pinion seal leaks, transfer case chain stretch, worn leaf spring bushings, front sway bar links, and radiator leaks. Check for common exhaust manifold cracks.
Electrical Quirks:
Occasional issues with the overhead console, door lock actuators, and instrument cluster illumination can occur due to age.