1993 Mitsubishi Montero Service Manual (P/N 316122-001)

• Coverage: Primary coverage is the 1993 Mitsubishi Montero. The 3.0L V6 6G72, VIN H engine chapter and selected engine-performance, clutch, transmission, transfer-case, axle, and cooling articles also identify 1993 Dodge Ram-50 and Mitsubishi Pickup applications, with model-specific procedures separated where required.
• 6G72 Engine Repair: Covers engine removal and installation, intake and exhaust manifolds, cylinder heads, timing belt, camshafts and rocker arms, crankshaft seals, water pump, oil pan, oil pump, cylinder block, pistons and rods, crankshaft and main bearings, valve service, and cylinder-head overhaul.
• Engine Performance Diagnostics: Includes preliminary inspection, compression and fuel-pressure testing, fault-code retrieval and clearing, no-code symptom diagnosis, ECM connector checks, sensor and actuator tests, ignition and idle adjustments, vacuum diagrams, sensor range charts, and a dedicated 3.0L engine wiring diagram.
• Drivetrain and 4WD: Details clutch service, automatic-transmission removal and external adjustments, manual-transmission service data, transfer-case teardown and reassembly, Montero center-differential and viscous-coupling work, locking hubs, front axle service, and conventional, limited-slip, and locking rear differentials.
• Brakes, Steering, and Suspension: Provides brake bleeding and component overhaul, ABS code diagnosis and hydraulic-unit testing, load-sensing proportioning-valve checks, power-steering pressure testing and bleeding, recirculating-ball gear and pump service, 4WD front-suspension repair, variable-shock diagnostics, ride-height adjustment, and wheel-alignment procedures.
• Electrical, HVAC, and Body Equipment: Includes grid-based wiring diagrams, component and ground locations, manual A/C-heater diagnosis, compressor and refrigerant service references, heater controls, starting and charging, cruise control, instrument-panel testing, wipers, defogger, power windows, locks, mirrors, antenna, and sunroof.
• PDF Organization: The download is arranged as 83 PDF articles totaling 1,135 pages, combining vehicle-specific repair sections with supplemental general-overhaul, inspection, troubleshooting, and waveform references.

6G72 Engine Mechanical and Performance

The 6G72 material goes beyond tune-up data. It identifies the VIN H engine, explains that hydraulic lash adjusters do not require routine valve-clearance adjustment, and documents engine removal, manifold and cylinder-head work, timing-belt replacement, camshaft and rocker-shaft service, oil-pan removal differences for Montero versus Pickup/Ram-50, and internal block inspection. Rebuild data is organized into component-specific torque tables, bearing and oil-clearance specifications, piston and ring limits, cylinder-block and head measurements, valve and guide data, camshaft limits, oil-pump clearances, and lubrication-system checks.

Timing references include the exploded timing-belt assembly, camshaft and crankshaft mark alignment, belt direction and tension checks, and a bolt-length identification view for the timing covers. The cylinder-head section supplies the bolt sequence, staged tightening reference, head-gasket identification, sealing locations, and inspection limits. Special-tool references include MD998051, MB998747, MD998443, MD998727, and MD998184 for cylinder-head, crankshaft-pulley, lash-adjuster, oil-pan, and piston-pin work.

Component orientation matters here. Cylinder-head gasket and bolt-washer orientation affect clamping and sealing, while timing-cover fasteners must return to the correct length-specific locations to avoid cover or thread damage.

Drivetrain, 4WD, Brakes, and Chassis

The drivetrain articles distinguish cable-operated clutches on RWD applications from hydraulic clutch systems on 4WD models. Transfer-case coverage includes removal, complete disassembly and reassembly, output and input shafts, the Montero center differential, 2WD-4WD synchronizer, detection switches, 4WD indicator control, and rear differential-lock circuitry. Rear-axle material separates conventional units from the limited-slip differential used on Montero RS models without ABS, Pickup 4WD, and Ram-50 4WD, plus the locking differential used on the Montero SR.

Front and rear differential repair includes axle shafts, CV joints, bearing and seal work, pinion depth, bearing preload, ring-gear backlash, tooth-contact patterns, limited-slip clutch-stack inspection, and locking-differential testing. On Montero transfer-case work, bearing removal must not load the viscous coupling. In the limited-slip differential, disc and plate order and direction are critical; an incorrect stack can produce wrong preload and prevent the case from seating correctly.

Brake coverage includes hydraulic bleeding, pedal and parking-brake adjustments, load-sensing proportioning-valve testing, disc and drum inspection, master-cylinder and caliper overhaul, and ABS code retrieval, wheel-sensor checks, relay and control-unit testing, hydraulic-unit service, and the ABS wiring diagram. The set also includes NHTSA Campaign 96V143000 for front brake-hose cracking on 1992-93 Montero models. Steering and suspension sections cover power-steering bleeding and pressure tests, steering-gear and pump overhaul, front wheel-bearing setup, ball-joint checks, torsion bars, control arms, variable shock absorbers, ride height, and alignment.

Electrical, HVAC, and Service Reference

The wiring package provides component and ground-location tables plus grid-based diagrams for the 3.0L engine control system, ABS and A/C-heater circuits, cruise control and rear differential lock, 4WD controls, variable shock absorbers, instrument cluster, exterior and interior lighting, wipers, and power accessories. Representative repair visuals include the timing-mark diagram, cylinder-head and main-bearing bolt sequences, Montero transfer-case and center-differential exploded views, the ABS hydraulic-unit assembly, and the manual A/C-heater wiring diagram.

The Montero-specific manual A/C chapter covers A/C control-unit voltage tests, switch and thermistor checks, dual-pressure-switch testing, blower resistor and switch continuity, compressor-clutch and relay diagnosis, system-performance checks, and removal of the blower, compressor, condenser, and evaporator assemblies. It identifies the original R-12/Nippondenso 10PA15 system, while companion general-service articles address refrigerant recovery, compressor-oil checking, and R-12/R-134a service practices. The underhood A/C specification label remains the controlling reference whenever it differs from the article.

Maintenance sections add VIN decoding, scheduled service charts, lubrication and fluid categories, wheel and tire data, battery specifications, reminder-light reset information, fuse locations, jacking points, and general safety material. The broad all-makes inspection and troubleshooting articles are supplemental; the model-specific sections are the controlling source for Montero repair work. Automatic- and manual-transmission coverage is limited to identification, service, adjustment, and removal/installation information rather than a complete internal transmission overhaul.

Fuel-system pressure, brake hydraulics, vehicle lifting, rotating engine parts, and refrigerant service all require the safety procedures and approved equipment identified in the relevant articles.