International Harvester 454, 464, 484, 574, 584 & 674 Tractor Shop Manual

This International Harvester tractor shop manual covers models 454, 464, 484, 574, 584, and 674, with separate procedures for the gasoline and diesel configurations covered.

Section Bookmarks and Wiring Detail

Search and navigation: OCR text search works across the manual, although recognition errors can cause missed matches. Embedded bookmarks open major sections, including the service data and diesel engine chapters. Zoom in to read the smallest wire, terminal, and test-point labels in the ignition diagrams.

The download contains one printable English-language PDF with 59 pages, including the two matching cover pages.

Engine Overhaul, Drivetrain Service, and System Tests

These are selected workshop topics. The manual also covers radiator removal, water-pump overhaul, and testing the diesel ether starting aid.

• Engine overhaul: Separate gasoline and diesel procedures cover cylinder heads, valves, guides, rotators, timing gears, pistons, crankshafts, bearings, seals, flywheels, balancer units, and oil pumps.

• Fuel systems: Service Marvel-Schebler and Zenith carburetors and mechanical governors, replace and bleed diesel filters, time Bosch distributor pumps, and test and overhaul injector nozzles.

• Front axle and steering: Service straight and swept-back adjustable axles, overhaul Ross and Danfoss steering units and Cessna and Plessey pumps, and check flow-divider and relief-valve operation.

• Clutch and transmission: Find tractor splitting points, clutch and shift-linkage adjustments, synchronized speed and range transmission overhaul, and lubrication-pump tests for early units.

• Differential, brakes, and PTO: Set bevel gear backlash and carrier bearing preload, service differential locks and planetary final drives, bleed wet brakes, and test independent PTO clutch pressure.

• Three-point hitch: Trace hitch drift or slow lowering to possible valve, linkage, or cylinder faults. The lift section includes housing, rockshaft, and auxiliary-valve service.

• Electrical diagnosis: Find Delco-Remy and Lucas alternator and regulator tests, starter no-load specifications, standard distributor timing, and Delcotronic pickup-coil and amplifier checks.

The procedures suit experienced tractor owners, restoration shops, and agricultural equipment mechanics with access to splitting stands, precision measuring tools, a hydraulic flow tester, and diesel and electrical test equipment.

Production Changes That Affect Service

Transmission and rear axle: On early units, the lubrication pump feeds the speed transmission. Later units use oil-cooler return flow, so the early pump flow test applies to a different lubrication layout. The 674 Row Crop has a separate range-transmission pinion bearing setup. The 454, 464, and 484 use a two-pinion differential, while the 574, 584, and 674 use a four-pinion unit.

Steering and charging: Ross steering units and Delco-Remy alternators are covered for the 454, 464, 574, and 674. The 484 and 584 use Danfoss steering units and Lucas 15ACR alternators. Delcotronic ignition coverage applies to equipped gasoline 574 and 674 tractors.

Workshop Drawings, Tooling, and Repair Limits

Exploded and sectional views show the Ross steering control valve, diesel cylinder-head bolt sequences, synchronized transmission shaft layout, and hydraulic lift linkage. The Delcotronic wiring circuit and amplifier test-point drawing identify connections used in the ignition checks. Named tools include a Flo-Rater or equivalent, alignment dowels, seal installers, an injection timing window, nozzle-sleeve tools, and a pinion gage bar.

Diesel fuel work: The Bosch BR and CR pump section covers removal, installation, timing, and external adjustments. Internal pump repair is referred to an equipped diesel service shop. Injector nozzle valves and tips are matched pairs and must stay together. Setting a diesel cylinder head combustion-face down can damage protruding injector tips, and prying out valve-seat inserts with a chisel can damage the counterbores.

Use rated splitting stands and lifting equipment when separating tractor sections or removing heavy assemblies. Keep hands clear of high-pressure fuel leaks.

Sample Valve, Cooling, and Rod-Bolt Data

The warm valve adjustment for the gasoline 454 specifies a 0.027-inch tappet gap at both intake and exhaust. The service-data table lists a cooling-system capacity of 12.5 quarts for the 484 diesel.

The connecting-rod sections give separate bolt torque specifications for engine assembly. The gasoline 454 calls for 43–49 ft-lb, and the diesel section lists 61 ft-lb for the covered diesel engines.