Jeep 1993 Cherokee, Grand Cherokee, Grand Wagoneer & Wrangler | Service Manual Collection

The Jeep articles cover vehicle-side service and fault isolation. The ATSG booklet takes AW-4 work into hydraulic testing and internal overhaul, with valve-body layouts and reassembly checks.

5.2L V8 coverage includes specifications, emissions information, Grand Cherokee and Grand Wagoneer engine wiring, vacuum routing, and selected procedures for the distributor, position sensors, fuel rails, injectors, and throttle body. The dedicated engine teardown and full fault-code diagnostic sections cover the 2.5L and 4.0L engines.

Search, Bookmarks, and Wiring Detail

Text search and diagram labels: The service text is searchable, and embedded bookmarks link to major sections. Search can miss labels within wiring diagrams. Small pin numbers and wire codes generally require zooming, and some wire codes remain faint when enlarged.

The ZIP contains one printable 1,492-page PDF and a separate text readme. The PDF total includes the one-page cover, one-page index, six pages with only a footer, and all campaign and recall material listed above.

Engine Diagnosis, Drivetrain Overhaul, and Chassis Service

This selection of service topics is part of a broader reference that also includes post-battery-disconnect relearn procedures and an injector waveform tutorial.

• Engine repair: Step-by-step procedures for engine removal, cylinder-head and valvetrain service, timing-chain work, oil-pump inspection, and cooling-system bleeding.
• Engine management: DRB-II fault-code diagnosis, no-start and driveability checks, symptom testing without codes, and fuel, ignition, and emissions component tests.
• Transmissions: AW-4 electronic diagnosis and internal overhaul, AX-5 and AX-15 manual transmission service, and Wrangler 32RH band and linkage adjustments.
• Transfer cases and axles: New Process 207/231 and NP/NV242 overhaul, Trac-Lok differential repair, pinion and carrier setup, and driveshaft and U-joint service.
• Brakes and chassis: Teves Mark IV ABS testing and bleeding, disc and drum brake repair, clutch service, steering, suspension, and wheel alignment.
• Electrical and climate systems: Charging and starting tests, Cherokee and Wrangler A/C-heater diagnosis, and circuit diagrams for engine management, ABS, and body systems.

This reference suits technicians and experienced Jeep owners who are comfortable using wiring diagrams, electrical test equipment, and model-specific service procedures.

Engine Reassembly and Fault Isolation

The 2.5L and 4.0L mechanical chapters cover intake and exhaust manifolds, front and rear seals, rocker arms, camshafts, water pumps, oil pans, and cylinder blocks. Inspection tables give bearing and ring clearances and wear limits for evaluating pistons, connecting rods, and crankshafts. Illustrated cylinder-head tightening sequences and timing-mark views support reassembly.

The engine-performance articles connect PCM theory and preliminary checks with code-based and symptom-based testing. Connector views and terminal IDs help trace a failed sensor check back through its circuit before replacing a part. The distributor section explains why indexing matters after removal when the PCM controls base ignition timing.

Transmission and Axle Work

The dedicated Cherokee 4.0L AW-4 diagnostic article covers the controller, solenoids, sensors, and connectors. The overhaul booklet adds oil-pump and planetary assembly work, clutch and brake unit inspection, and valve-body check-ball diagrams. The transfer-case articles cover seal repair, linkage adjustment, and vacuum-switch testing where applicable.

Axle service includes Model 30 fronts, Model 35 rears, and the optional Cherokee 8¼-inch rear axle. The setup procedures cover preload, runout, backlash, and gear tooth contact. The pinion section explains why exceeding preload calls for a new collapsible spacer.

Electrical, Brakes, and Climate

Wiring references include the Cherokee cooling-fan and rear-defogger circuits and model-specific ABS diagrams. Related sections cover alternator and starter repair, parasitic-draw testing, instruments and fuses, cruise control, anti-theft, keyless entry, and wiper and washer systems.

The manual identifies the Sanden SD-709 for Cherokee and Wrangler and the Nippondenso 10PA17 for Grand Cherokee. The general compressor chapter includes a Nippondenso exploded view. Separate service precautions cover ABS hydraulic depressurization and A/C refrigerant recovery.

A Preview of Oil Pump and Ring Gear Measurements

The 4.0L oil-pump inspection table lists 0.002–0.006 in. of gear end clearance and 0.002–0.004 in. of gear-to-body clearance for evaluating the pump during overhaul.

The optional Cherokee 8¼-inch rear axle procedure specifies 0.005–0.008 in. of final ring gear backlash after the carrier bearings have been preloaded.