1987 John Deere JD570 & JD570A Motor Grader Technical Manual (P/N TM-1001)

John Deere publication TM-1001 (December 1987) covers service and repair of the JD570 and JD570A motor graders, from engine work and power-unit separation to transmission, hydraulic, and grading-equipment service.

Supplied as one 526-page PDF in English.

• Engine repair: Cylinder-head service, wet-liner and piston inspection, crankshaft work, timing-gear installation, and lubrication-system diagnosis.

• Power train: Disconnect-clutch service, transfer-drive repair, power shift transmission overhaul, differential adjustment, and tandem and final-drive work.

• Hydraulic testing: JD570-A System Analyzer procedures, function-leakage checks, accumulator testing, control-valve service, and hydraulic-cylinder repair.

• Steering and brakes: Serial-specific steering-valve repair, steering-system bleeding, brake-valve diagnosis, wet-disk brake service, and parking-brake adjustment.

• Electrical diagnosis: Harness layouts, charging-system tests, starting-circuit checks, and Delco-Remy and John Deere starter repair.

• Grading equipment: Circle-drive gearbox service, moldboard and circle adjustment, saddle locking-pin repair, and front-axle and scarifier procedures.

Written for experienced service technicians, this manual assumes shop-service knowledge and access to the specified tools and test equipment.

Engine Repair and Cooling

The engine sections distinguish early and later liner seals and piston-pin assemblies. Inspection limits, component torque tables, and the exploded rocker-arm assembly view support internal engine work.

Timing-gear procedures use the JD254 tool; crankshaft rear-seal work specifies the JT30040 installer set. The manual warns that separating the rear seal from its wear sleeve can damage the seal and cause oil leakage.

Cooling-system coverage includes water-pump overhaul, thermostat testing, and oil-cooler configurations identified by engine serial number.

Fuel Injection and Turbocharger Service

Roosa Master C, CB, and JDB pump sections cover diagnosis, removal, installation, timing, and advance adjustment. Turbocharger inspection and overhaul accompany transfer-pump testing and fuel-system bleeding.

Detailed injection-pump overhaul and injection-nozzle service refer to separate manual SM-2045, which is not included.

Power Shift Transmission and Final Drives

Transmission coverage extends to pressure tests, clutch-pack and oil-manifold air testing, planetary-carrier service, and shift-linkage adjustment. The Transmission Control System - Dual Accumulator diagram and forward/reverse hydraulic-flow illustrations show the circuits involved in gear engagement.

Differential procedures cover bearing preload, ring-gear backlash, pinion cone-point adjustment, and tooth-contact checks. Tandem chain drives, final-drive planetaries, and the tow disconnect have dedicated repair instructions.

The transmission oil-pump section also warns that assembling its gears dry can cause premature pump failure.

Hydraulic Diagnosis, Steering, and Brakes

The analyzer system and function-leakage tests are labeled for JD570-A, with test specifications for serial 001700-up. A pretest checklist, symptom index, and test-pattern charts connect reported faults to verification tests, helping distinguish pump problems from leakage in individual circuits.

The Hydraulic System schematic shows the relationship between pumps, pressure controls, accumulators, and operating functions. Steering-valve procedures distinguish several serial-number groups, including the change at 006725; brake coverage includes hydraulic actuation, accumulator assistance, and mechanical parking-brake service.

Complete main hydraulic-pump repair refers to separate component manual CTM-7, which is not included. Pump-drive service and pump specifications remain part of this publication.

Wiring and Charging-System Variants

Main wiring-harness layouts distinguish machines through serial 000681, 000682-001699, and 001700-up. Main Wiring Harness - Two-Piece Type, Starting and Charging Circuits, and Cab Wiring illustrations provide harness routing, circuit connections, and wire-color codes.

Charging-system chapters split at engine serial 130705/130706, with additional coverage for later alternators. Windshield-wiper motor repair and hour-meter checks round out the electrical section.

Blade Equipment and Shop Service Data

Circle-drive and rotary-manifold work accompanies moldboard wear-plate service, extension installation, saddle adjustment, and scarifier and bulldozer attachment procedures.

Predelivery checks, tune-up tables, lubrication schedules, fluid capacities, and drawings for dealer-fabricated supports