1984–1993 Jeep Cherokee & Comanche Repair Manual PDF

This repair manual covers maintenance, troubleshooting, and engine overhaul for the 1984–1993 Jeep Cherokee and Comanche. Technical chapters separate the four-cylinder, V6, and inline six-cylinder engines, with additional sections for drivetrain, chassis, and electrical work.

Searchable Chapters, Bookmarks, and Wiring Detail

Text search and diagram detail: Text search works through most chapters, although some illustration captions are not searchable and OCR errors can affect individual terms. Embedded bookmarks provide access to the technical chapters and index. Small wiring labels require zooming.

The download contains one printable, 336-page PDF, including the contents, introductory material, technical chapters, wiring diagrams, and index.

Engine Overhaul, Drivetrain Service, and Fault Tracing

These selected topics outline the main workshop coverage; the manual also explains door-window glass replacement and metric tire-size codes.

• Engine repair: Step-by-step procedures for timing-chain and sprocket replacement, cylinder-head removal, crankshaft inspection, piston-ring installation, and bearing-clearance checks.

• Fuel and engine controls: Carburetor diagnosis and overhaul, TBI and MPI component replacement, fuel-pressure testing, emissions-system checks, and trouble-code retrieval charts.

• Electrical troubleshooting: Ignition, charging, and starting-system checks, plus chassis wiring diagrams with wire-color codes, connector details, and circuit symbols.

• Transmission and transfer-case service: Removal and installation, seal replacement, shift-linkage adjustment, automatic-transmission band adjustment, and exploded views; internal overhaul coverage is limited.

• Clutch and driveline: Clutch inspection, hydraulic-cylinder service and bleeding, driveshaft and universal-joint replacement, axle removal, and front hub assembly replacement.

• Brake service: Disc and drum inspection, caliper and wheel-cylinder overhaul, master-cylinder service, hydraulic bleeding, and preliminary ABS checks.

• Cooling and cabin heating: Thermostat and water-pump checks, radiator replacement, heater-core replacement, and basic air-conditioning checks and component replacement.

The maintenance chapter is written for the home mechanic; advanced inspection and removal work suits experienced owners with the measuring tools and lifting equipment specified for the job.

Engine Inspection and Bearing Selection

The engine chapters distinguish work possible with the engine installed from general overhaul procedures. Cylinder-head disassembly, block inspection, cylinder honing, and crankshaft installation are described alongside component-specific torque specifications and wear limits.

Main bearing selection charts for the four-cylinder and inline six-cylinder engines connect journal markings and bearing grades with the clearance checks used during rebuilding. This gives the reader a practical reference for inspecting parts and selecting replacement bearings.

The inline-six vibration-damper section warns that a jaw-type gear puller can damage the damper. Its removal illustrations identify the appropriate type of puller.

Fuel-System Tests and Electrical Diagnosis

Fuel-system coverage distinguishes carbureted, Throttle Body Injection, and Multi-Point Injection configurations. Pressure and delivery tests address mechanical and electric fuel pumps, while the emissions chapter separates V6 Computer Command Control System code retrieval from the later self-diagnosis charts.

Vacuum-hose routing diagrams support checks for disconnected or incorrectly routed emissions hoses. Chassis examples include the front-lighting wiring diagram for two-headlight models, the instrument-panel ground wiring diagram, and separate Cherokee and Comanche stop/turn and hazard circuits.

Transmission, Transfer-Case, and Hub Coverage

Manual-transmission instructions concentrate on external service and unit removal and installation. Exploded views show internal components, but they do not provide a complete internal rebuild procedure. Automatic-transmission coverage likewise focuses on preliminary diagnosis, maintenance, linkage and band adjustments, and removal and installation.

Command-Trac and Selec-Trac transfer cases receive linkage-adjustment and removal instructions, supported by exploded views. Internal overhaul is referred to a transmission specialist.

The front wheel hub and bearing exploded view applies to 2WD models. For 4WD models, the manual describes hub assembly removal and installation but refers separation and reassembly of the hub and bearings to a suitably equipped repair shop.

Brakes, Suspension, and Cooling-System Work

Conventional brake procedures cover hydraulic component overhaul and bleeding. The ABS hydraulic and control-circuit schematic explains system layout; ABS coverage is limited to system information and preliminary checks, with specialist testing and repair required.

Suspension and steering sections address coil springs, rear leaf springs, track bars, steering linkage, and power-steering bleeding. Cooling and heating coverage extends to heater-core replacement; air-conditioning coverage includes basic checks and component replacement rather than in-depth diagnosis.

Automotive maintenance carries inherent physical risks; verify the specified lifting points and support the vehicle securely on jack stands before beginning undercarriage work.

A Preview of Camshaft Clearances and Leaf-Spring Torques

For the four-cylinder engine, camshaft journal-to-bearing oil clearance is specified at 0.001–0.003 in. The engine chapters also provide journal dimensions and component-specific wear limits.

Rear leaf-spring tie-plate U-bolt nut torque is listed separately by model: 52 ft-lb for Cherokee and 82 ft-lb for Comanche.