Land Rover Range Rover 1987–1992 Repair Manual (P/N SRR652USWM A)

This Land Rover factory workshop manual covers 1987–1991 model-year Range Rover vehicles built for the U.S.A. and Canada. Publication Number SRR652USWM A incorporates amendments through September 1990. Model-year additions are marked in the page headers, allowing the baseline 1987 procedures to be separated from later 1988–1991 changes.

PDF Search, Wiring Detail, and File Contents

Search and diagram limitations: Text search is partial, including gaps in later specification tables, ABS material, and wiring diagrams. No embedded PDF bookmarks are provided. Small wiring labels require zooming; some labels and lines in the main electrical diagrams remain faint or incomplete at higher magnification.

The ZIP download contains 30 printable English section PDFs totaling 864 pages, including one supplementary seven-wire trailer-connector wiring sheet. The standalone 36-page A.R.A. air-conditioning file repeats the section within the 44-page HVAC file; excluding that duplicate file leaves 828 pages.

V8 Overhaul, Drivetrain Repair, and System Diagnosis

These selected workshop topics illustrate the repair coverage. Additional subjects include drive-shaft universal-joint overhaul and wheel-balancing guidance.

• V8 engine and support systems: Step-by-step engine removal, internal overhaul, oil-pump overhaul, engine oil-pressure testing, cooling-system service, and exhaust work, with specification and tuning sections.

• Fuel injection and emissions: Lucas 13CU, 14CU, and 14CUX descriptions, ECU-harness continuity tests, fault-isolation charts, fuel-pressure testing, and engine-setting procedures.

• Automatic and transfer gearboxes: ZF 4HP22 in-vehicle repairs, removed-gearbox service, and major overhaul; LT230 internal overhaul, bearing setup, center differential work, and switch adjustment.

• Axles, steering, and suspension: Differential overhaul, pinion setup, hub and disc service, axle shafts, CV joints, swivel housings, power-steering pressure tests, and suspension-component replacement.

• Conventional and ABS brakes: Dual-circuit bleeding, master-cylinder and servo overhaul, caliper repair, parking-brake service, and WABCO ABS diagnosis and component replacement.

• Electrical, HVAC, and accessories: Year-specific wiring diagrams, starting and charging diagnosis, ignition service, A.R.A. refrigeration-system testing, and heater-component removal and replacement.

• Body repair and scheduled service: Chassis and monocoque panel repairs, factory weld locations, bolt-on aluminum panels, doors, tailgates, glass, trim, seat belts, and maintenance schedules.

Land Rover describes the manual as being for skilled technicians; owners undertaking their own repair work need prior mechanical training, and safety-critical steering, brake, or suspension repairs are not presented as untrained DIY work.

V8 Internals and Lucas EFI Variants

Engine overhaul reaches the cylinder heads and valve gear, timing gears and camshaft, pistons and connecting rods, and crankshaft inspection. Separate specification and tuning material addresses the 3.5-liter V8 and the 3.9-liter data introduced for 1989.

EFI component service: Airflow-meter, throttle-assembly, injector, pump, rail, regulator, and tank work accompanies the test charts. The 14CU material adds evaporative-purge control checks; the 14CUX section includes the 17EM fault-code display.

Emissions sections add PCV-filter service, oxygen-sensor replacement, and evaporative-system testing.

The variant-specific tests help match diagnostic checks to the installed EFI system. After VIN No. 451518, ECU PRC 8747 replaces PRC 7081 and eliminates the tune-select resistor and its associated test. The continuity section cautions that probing the faces of ECU connector sockets can damage the terminals and create poor connections.

ZF and Transfer-Gearbox Repair Depth

ZF procedures cover the torque converter, pump and bellhousing, valve body/control unit, governor and parking mechanism, gear train, freewheels, and A–F clutch assemblies. LT230 work includes differential-lock and neutral-switch adjustment.

Borg Warner coverage is narrower: Ratios, capacity and lubricant data, oil service, towing and dynamometer notes, selected tool references, and removal/refitting of the combined ZF/Borg Warner transmission assembly are included, but not a complete Borg Warner internal overhaul.

Chassis Service and WABCO ABS Fault Finding

ABS-specific hub arrangements accompany the axle procedures. Steering work includes pump replacement, steering-box repair, and system bleeding; suspension coverage includes radius arms, springs, shock absorbers, anti-roll bars, and the rear self-leveling unit.

Conventional brake procedures include pressure-reducing valve service and transmission-mounted parking-brake overhaul and adjustment. The 1990 WABCO four-channel ABS material adds warning-circuit diagnosis, blink-code retrieval and fault tables, multimeter checks, and accumulator-precharge testing.

Wheel sensors, the hydraulic booster, pump, and accumulator have removal and replacement instructions. ABS service covers diagnosis and unit replacement; the hydraulic booster is not an internally serviceable assembly.

Electrical Equipment, Climate Control, and Body Details

Electrical coverage includes main circuit diagrams for 1987–1991, equipment locations, relay and fuse identification, and service for lighting, instruments, windows, locks, seats, sunroof, wipers, and Hella CR66 cruise control. Alternator and starter-motor overhaul procedures accompany the diagnostic material.

The A.R.A. section covers refrigeration-system diagnosis, leak testing, evacuation, charging, and component removal and refitting. Its service-valve warnings explain how operating the system with the valves in the OFF position can severely damage the compressor. R-12 A/C and pressurized ABS work require trained personnel and the correct service equipment, with applicable refrigerant-handling requirements observed.

Body sections include sunroof timing. Maintenance material distinguishes 49-state and California schedules and includes later Borg Warner transfer-case service additions.

Factory References, Diagrams, and Tools

Reference sections provide component-specific torque tables, fluid and refrigerant capacities, and approved lubricants. Shift-speed data, pressure-test specifications, bearing preload and end-float data, wear limits, clearances, and electrical test values accompany the relevant systems.

Tool references include 18G1501 torque-converter handles, LST118 transmission holding fixture, 18G1423 center-differential locknut socket, and 18G191 pinion-setting gauge. Dimensioned drawings support local fabrication of transmission lifting and holding fixtures.

Named visuals include the A.R.A. refrigeration-cycle and electrical supply switch/fuse schematics, ZF clutch-assembly exploded views, Brake Pipe Layout RR2222E, ABS booster circuit RR2669M, and 1991 Main Circuit Diagrams RR2942E/RR2943E.

Examples of V8 Piston and Ring Specifications

The 3.9-liter V8 data sheet gives a piston-to-bore clearance of 0.018–0.041 mm, measured at the bottom of the skirt at right angles to the piston pin, and a compression-ring gap of 0.40–0.65 mm. The engine overhaul section relates piston and ring inspection to cylinder-bore condition and piston-to-connecting-rod fitting.