Description
John Deere 9920 9930 Service Manual is a detailed service and technical manual for the John Deere 9920 and 9930 cotton pickers. It is intended for servicing, repair, troubleshooting, operational testing and adjustment of the machine’s engine, fuel and air systems, electrical circuits, power train, steering, brakes, hydraulics, operator station and cotton-picking equipment.
This English-language digital PDF follows a structured repair and testing format. It includes removal and installation procedures, component repair information, system checks, operational checkout procedures, diagnostic material, system diagrams, theory of operation, adjustments and special-tool information for the covered cotton picker models.
WHAT THIS MANUAL CONTAINS
- General information – safety instructions, general specifications, and fuels and lubricants.
- Engine repair – engine component removal and installation, together with procedures for gaining access to the cooling system.
- Fuel and air system repair – removal and installation of the diesel fuel system.
- Electrical repair – Motorola, Nippondenso and Bosch charging circuit repairs; starting circuits; lights, instruments and accessory circuits; monitor system repair; and connector repair.
- Power train repair – Eaton and Sundstrand hydrostatic drives, transmission, differential, auxiliary gear case and final drive.
- Steering and brake repair – steering component removal and installation, steering column, steering metering pump, single-wheel steering motor, dual-guide-wheel steering cylinder and brake repairs.
- Hydraulic system repair – hydraulic pump, main control valve, basket lift cylinder, picking-unit lift cylinders, vane dump control cylinder, hydraulic motors, height control, pressure control valve, basket compactor control valve and vane dump control valve.
- Wheel and axle repair – single guide wheel axle and dual guide wheel axle service.
- Operator station repair – Delco R-12, Nippondenso R-12 and Nippondenso R-134a air-conditioning systems, heating system, seat and cab repair.
- Picking unit repair – picking unit removal and installation, grid bars and pressure plates, spindles and picker bars, picker drums, drive shafts and gears, idler gears and bearings, doffers, stub shaft and drive, moistener column, gear cases, universal joints, countershafts, picking-unit cabinets and cam tracks.
- Air, water and lubrication systems – air system repair, water system repair and the 9930 picking-unit lubrication system.
- Special tools – fabricated tool information for repair and testing work.
- Machine operational checkout – an operational checkout procedure for evaluating machine operation after service or repair.
- Engine operation and testing – engine test information.
- Fuel and air operation and testing – air intake system and diesel fuel system tests.
- Electrical operation and testing – system diagrams, electrical system diagnosis, starting and charging circuits, gauge cluster, lighting, monitor system, operator presence system, battery and accessory circuits. The contents identify charging-circuit coverage for the 9920 and 9930, including 9930 PIN group distinctions.
- Power train operation and testing – Eaton and Sundstrand hydrostatic drives, transmission, auxiliary gear case and final drive testing.
- Steering and brake operation and testing – steering and brake checks.
- Hydraulic system operation and testing – hydraulic system, pump, main control valve, cylinders, motors, height control, pressure control valve, basket compactor control valve and vane dump control valve testing.
- Operator station operation and testing – operator station checks, diagnostics, R-12 and R-134a air-conditioning tests, operator station tests, adjustments and theory of operation.
- Picking unit, air, water and lubrication system testing – picking-unit system checks, air system tests, water system tests and picking-unit lubrication system operation.
- Index and diagnostic references – an index is included to help locate relevant repair, testing and system information.
MODELS COVERED
- John Deere 9920 Cotton Picker
- John Deere 9930 Cotton Picker
MANUAL DETAILS
Manufacturer: John Deere
Models Covered: 9920 and 9930 Cotton Pickers
Machine Type: Cotton picker
Manual Type: Service technical manual
Publication Number: TM1283
Format: Digital PDF
Language: English
The John Deere 9920 9930 Service Manual is suitable for workshop technicians, agricultural machinery repairers and owners carrying out diagnosis, maintenance or repair work on these cotton picker models. The contents distinguish several component suppliers and system versions, including Eaton and Sundstrand hydrostatic drives, multiple charging systems, different air-conditioning refrigerants and specified electrical coverage for identified 9930 PIN groups.
WHAT HAPPENS AFTER PURCHASE?
After purchase you will instantly receive our download information file by email. Your manual will then be manually checked and sent to the email address used during checkout, usually within minutes and normally within 1 hour.
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