John Deere 9400, 9500 & 9600 Combine Repair Manual

$29.95

Model: 9400 | 9500 | 9600
Type: Combine
Years: 1994-1996
1235 Pages·64 MB·Searchable PDF·English·Print-Ready
  • Wiring Diagrams
  • Hydraulic Schematics
  • Torque Specs
  • Bookmarks

Same factory service manual used by authorized dealer technicians.

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John Deere 9400, 9500, 9600 Repair - Page 1
John Deere 9400, 9500 & 9600 Combine Repair Manual $29.95

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This is the complete John Deere factory repair manual (TM1401) for the 9400, 9500 and 9600 Maximizer combines. Across 1,235 pages it walks you through every major system on the machine: removing and rebuilding the diesel engine, servicing the hydrostatic power train and final drives, repairing the feeder house and separator, and tracing the full electrical system with wiring diagrams. It is the same information a John Deere dealer technician works from, with the torque values, capacities and test pressures called out so a repair is done to spec the first time.

What's Inside This John Deere 9400-9600 Repair Manual

SystemPagesKey Topics
GeneralSafety, Identification Number Location, Specifications, Tune Up and Adjustment, Fuels and Lubricants
EngineRemove and Install Engine, Cooling System, Lower Engine Repair
Fuel and Air RepairAir Intake System, Diesel Fuel System
Electrical SystemBulbs and Switches, Batteries, Harness and Connector Repair, Gauges and Monitors, Wiper and Radio, Alternator, Starting Motor, Electrical Engine Control
Power Train RepairTransmission and Differential, Ring and Pinion Final Drive, Planetary Final Drive, Hydrostatic System, Cam Lobe Motor, Tires and Wheels
Power Steering and BrakesSteering, Brakes
Hydraulic RepairHydraulic Reservoir, Hydraulic Pumps, Hydraulic Valves
Separator ShellGull Wing Doors
Operator Station RepairAir Conditioning System, System Components, Cab
Feeder House RepairFeeder House Conveyor, Conveyor Drum, Slip Clutch, Feeder House Drives and Reverser Gear Case, Contour Master Platform Driveshafts, Contour Master Tilt Cylinder and Frame
SeparatorCylinder Drives, Straw Walkers and Crankshafts, Straw Chopper, Straw Spreader and Chaff Spreader, Shoe Supply Augers, Cleaning Fan, Chaffer and Sieve Frame, Tailings Elevator and Augers, Primary Countershaft Gearcase, Header Electromagnetic Clutch
Grain Tank and Unloading System RepairGrain Tank Cross Augers, Unloading Auger System Drives, Vertical and Horizontal Unloading Augers and Gearcases, Upper Clean Grain Elevator, Grain Tank and Extensions, Loading Auger Gear Case
Engine Gearcase and Control Valve RepairEngine Gearcase and Valve
Dial-A-Matic Header Height Control-

Quick Reference Specifications

SpecificationValuePage
9400 Combine
Engine (9400)John Deere 6359 / 6068
9500 and 9600 Combines
Engine (9500/9600)John Deere 6076
All models
Engine Oil Capacity (Crankcase)14 L (14-1/2 qt) on 6359A; 18.9 L (20 qt) on 6068H; 25 L (26-1/2 qt) on 9500/9600
Coolant Capacity (With Heater)36 L (38 qt); 40 L (42 qt) on 9600 Corn Combine
Engine-to-Bell Housing Cap Screw Torque340 N.m (250 lb-ft)
Engine Mount Cap Screw Torque80 N.m (60 lb-ft)
Radiator Test Pressure124 kPa (1.2 bar / 18 psi)
Radiator Cap Test Pressure48 kPa (0.5 bar / 7 psi)
9400, 9500, 9600 Maximizer
Production Years1994-1996

John Deere 9400-9600 Common Problems This Manual Covers

Header drive engages unexpectedly or will not disengage during unclogging

Trace the header drive hydraulic control valve and the drive-circuit solenoid for sticking or contamination. The Hydraulic Repair section covers removing and testing the hydraulic valves, and the Separator section covers the header electromagnetic clutch, so you can confirm whether the unwanted engagement is a stuck valve, a failed solenoid, or a clutch fault before replacing parts.

Manual Section: Hydraulic Repair
Engine shuts down abruptly while working under load

This is usually fuel starvation from a failed water separator or air starvation from a clogged secondary air filter. Service the fuel water separator and replace the air filters at the intervals in the General section, then verify fuel supply and intake restriction before suspecting the injection pump.

Manual Section: General
Hydraulic system overheats during extended operation

Contaminated or overdue hydraulic oil and filter are the common cause. Replace the hydraulic/oil filter on its service interval and inspect the hydraulic reservoir and pumps as described in the Hydraulic Repair section, checking for restricted return flow that drives oil temperature up.

Manual Section: Hydraulic Repair
Rough running with blue smoke on a 9600

Blue smoke with a rough idle points to a worn or failing injector. The Fuel and Air Repair section covers the diesel fuel system and injector service so you can isolate the bad cylinder, test the injector and restore clean combustion.

Manual Section: Engine

Frequently Asked Questions

What engines are in the John Deere 9400, 9500 and 9600 combines?

The 9400 uses the John Deere 6359 or 6068 diesel, while the 9500 and 9600 run the larger 6076 diesel. The manual lists the crankcase oil and coolant capacities for each so you can service the right engine without guessing.

Why does the header drive engage unexpectedly or fail to disengage when unclogging?

That points to the header drive hydraulic control valve or a stuck solenoid in the drive circuit. The Hydraulic Repair and Feeder House sections cover testing the control valve and the electromagnetic header clutch so you can isolate whether the fault is hydraulic or electrical.

What are the engine bolt torque specs for these combines?

The General specifications give the key values, including 340 N.m (250 lb-ft) on the engine-to-bell-housing cap screws and 80 N.m (60 lb-ft) on the engine mount cap screws. Full tightening torques for each assembly are listed in the relevant repair section.

How often should the hydraulic and air filters be changed?

Owners report changing the hydraulic/oil filter around the 400-hour interval and the primary air filter annually. Skipping the hydraulic filter change is a common cause of the hydraulic system overheating during long days in the field.

Does this manual cover the electrical and wiring system?

Yes. The Electrical System section covers batteries, harness and connector repair, gauges and monitors, the alternator, starting motor and electrical engine control, with the wiring information needed to chase down intermittent faults such as burnt connectors above the air-to-air cooler.

BrandJohn Deere
Model9400, 9500, 9600
Machine TypeCombine
Manual TypeRepair Manual
LanguageEnglish
FormatSearchable PDF (Digital Download)
Pages1,235
File Size64 MB
Year Range1994-1996
Wiring DiagramsYes
Hydraulic SchematicsYes
Torque SpecificationsYes
Bookmarked / IndexedYes

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