Fordson Dexta / Super Dexta 1958–1962 Tractor Workshop & Parts Manual Set (P/N FOO.1566-D)

The hydraulic supplement updates the original power-lift section with production changes and revised testing information. The parts list supplies exploded assemblies, part numbers and application notes for identifying the components used during repair.

Fuel-system coverage: Injection-pump overhaul, phasing and calibration procedures describe the pneumatic-governor pump. Mechanical-governor pumps and gasoline fuel-system groups appear in the parts list; those entries do not provide equivalent pump or gasoline-engine overhaul instructions.

PDF Bookmarks, Wiring Detail and Page Count

Search, section access and wiring labels: Technical text search is unavailable. Eighteen embedded bookmarks provide access to workshop sections and the start of the parts list. Small wire-color codes and terminal labels in the Wiring Diagram require zooming.

The download contains one printable, English-language 408-page PDF, including the publications listed above and one additional introductory cover page.

Qualitrol Hydraulics, Drivetrain Repair and Parts Reference

The following highlights are a selection of the covered work. Further topics include power-adjusted rear wheels and automatic pick-up hitch service.

• Engine overhaul: Step-by-step procedures for tractor splitting, engine disassembly and reassembly, cylinder-head work, liner replacement, and crankshaft and connecting-rod inspection.

• Diesel fuel system: Injection timing, pneumatic-governor checks, pump phasing and calibration, injector testing, lift-pump overhaul, bleeding, and symptom-based fault diagnosis.

• Single and double clutches: Removal, inspection, double-clutch disassembly and reassembly, release-lever setting, linkage adjustment, and Live P.T.O. clutch service.

• Gearbox and rear axle: Shaft, bearing and seal repair, selector service, differential-lock work, crown-wheel-and-pinion overhaul, bearing-preload adjustment, and P.T.O. repair.

• Hydraulic power lift: Qualitrol and Position Control adjustments, lift-cylinder and linkage repair, pump overhaul, pressure testing, and Double-Acting Ram valve service.

• Electrical diagnosis: Starter-circuit fault tracing, generator output and motoring tests, regulator checks, starter overhaul, and the system Wiring Diagram.

• Brakes and steering: Brake overhaul and adjustment, front-axle and spindle service, steering alignment, and steering-gear disassembly and reassembly.

This material suits mechanics familiar with tractor overhaul and workshop measuring equipment; injection-pump calibration uses the dedicated test equipment illustrated in the manual.

Engine, Lubrication and Cooling Repair

The engine section separates Standard Dexta and Super Dexta specifications. It lists 32 BHP at 2,000 rpm and 92 lb-ft at 1,200 rpm for Standard Dexta, compared with 39.5 BHP at 2,000 rpm and 112 lb-ft at 1,250 rpm for Super Dexta.

Inspection data covers piston-ring gaps, connecting-rod alignment, main-bearing clearances and timing-gear backlash. The Engine Lubrication System illustration supports oil-pump and pressure-relief diagnosis, while cooling-system procedures cover water-pump rebuilding, thermostat testing, radiator removal and overheating faults.

Liner installation has a specific lubricant requirement: Ford specifies tallow and expressly excludes oil or grease, a distinction that matters when pressing the interference-fit liners into the block. Illustrated tooling includes the T.6093 valve spring compressor and T.6101/a cylinder-liner remover adaptor.

Fuel Injection Testing and Fault Isolation

The Calibrating and Phasing Test Equipment illustration shows the bench arrangement used for injection-pump work. Diagnostic material separates fuel-system and mechanical causes of hard starting, starting-and-stopping, power loss, knock and excessive smoke.

The pump instructions identify delivery valves and guides as lapped matched pairs; mixing them can compromise their precision fit and sealing.

Clutch, Gearbox and Rear-Axle Differences

The Exploded View of the Double Clutch and Sectioned Gearbox show the relationship between transmission drive and Live P.T.O. components. Gearbox coverage includes six forward and two reverse ratios, main and secondary shafts, selector rails and forks, and their bearings and seals.

The change at 957E-63953 affects shaft and gear dimensions, some service tools, and procedures; P.T.O. tables also distinguish earlier specifications. Super Dexta material identifies its different main-shaft spigot bearing, main drive shaft, secondary output shaft and reverse-idler arrangement.

The Sectioned View of Rear Axle and Hydraulics supports work on the differential, final drive and P.T.O. Standard Dexta and Super Dexta pinion and bearing differences are identified, with T.7000 tooling and model-specific adaptors shown where required.

Power-Lift Updates and D.A.R. Valve Testing

The hydraulic supplement adds flow-control operation, revised control-valve and bushing applications, and component interchangeability limits. Its serial-specific information helps match parts and testing specifications to the installed hydraulic arrangement before repair.

Separate tests cover pump relief-valve operation and D.A.R. check-valve sealing. The T.8503 hydraulic pressure gauge and associated test equipment are illustrated for these checks.

Electrical Variations and Illustrated Parts

The electrical section is labeled for Dexta, Super Dexta and New Super Dexta. It distinguishes generator, regulator and starter-switch production changes rather than treating every electrical assembly as interchangeable.

The parts list separates pneumatic-governor injection pumps for 1957–March 1962 from mechanical-governor applications for April 1962–1964. Generator groups distinguish assemblies used through October 1962 from those used November 1962–1964.

Exploded groups cover hydraulic lift and D.A.R. components, transmission and clutches, Live P.T.O., differential lock, engine, fuel and electrical systems, and sheet metal. A numerical index links part numbers to their illustrated groups.

Chassis Work and Tractor Support

Steering illustrations show worm-shaft, rocker-shaft and main-nut bearing adjustments. Belt-pulley coverage extends to shaft bearings, seals and end-float specifications.

Always practice standard shop safety protocols and securely support the tractor before engine/front-axle separation, rear-axle work, or other heavy-component repair.

Selected Engine, Cooling and Hydraulic Specifications

Engine inspection: Crankshaft end-float is specified at 0.00225–0.01025 in.; main-bearing cap bolt torque is 90–95 lb-ft. These accompany the engine inspection and assembly data.

Cooling checks: Capacity is 15 Imperial pints (8.52 liters). The thermostat should begin opening at 156–165°F and be fully open at 185°F.

Hydraulic versions: The earlier pump specification lists 3.31 Imperial gal/min (15.03 L/min) at 1,550 engine rpm and relief pressure of 2,100–2,300 psi. The supplement specifies 2,450–2,500 psi for the revised relief-valve arrangement introduced at approximately tractor S/N 957E-49624.