The John Deere Forage Harvester 7400 is a robust, high-performance agricultural machine designed for efficient forage harvesting. Known for its reliability and advanced features, this model enhances productivity on the farm, making it a preferred choice among farmers seeking quality and durability in their equipment.

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MAINTENANCE RESOURCES

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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
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Work Order Templates

Pre-built workflows to keep your asset running smoothly.

Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Procedures

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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Parts

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Drive Motor
B2 Rollers
Tensioning System
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John Deere Forage Harvesters 7400

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Maintenance Plans for John Deere Forage Harvesters Model 7400

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Initial 50 Hours Maintenance

Warning: This maintenance check requires trained personnel with PPE!

Retighten front wheel attaching nuts to 550 N-m (400 Ib-ft)

Retighten rear wheel attaching bolts to 260 N.m (185 lb-ft)-Standard axle

Retighten rear wheel attaching bolts to 550 N.m (400 lb-ft)-Heavy duty and powered axle

Retighten final drive attaching screws

Retighten 3-speed or ProDrive transmission attaching screws

Retighten front axle attaching screws

Sign off on the Initial 50 Hours Maintenance

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Yearly Maintenance

Starting motor checked

Alternator checked

Brake fluid changed - 3-Speed transmission only

Brake disk thickness - ProDrive transmission only

Air intake system hose connections checked

Turbocharger attaching bolts retightened (Cummins engine)

Air conditioning system cleaned, filter of coolant conditioner and thermostats changed

Vibration damper checked

Sign off on the yearly maintenance

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1000 Hourly Maintenance

Change oil of length-of-cut transmission

Change oil of 3-speed or ProDrive transmission

Change oil of final drives

Change oil of differential - powered rear axle

Change oil of reduction gears - powered rear axle

Have John Deere engine valve clearance checked and, if necessary, adjusted by your John Deere dealer. in every 2000 hours

Check the fan hub in every 10000 hours

Sign off on the 1000 Hourly Maintenance

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Initial 10 Hours Maintenance

Retighten steering cylinder bracket attaching screws at rear axle

Retighten steering cylinder bracket attaching screws at wheel motors

Retighten wheel motor yoke attaching screws at rear axle sliding sleeve

Sign off on the maintenance

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Initial 100 Hours Maintenance

Perform daily or 10 hour service (refer to this Section and to "Fuel, Lubricants and Capacities")

Avoid unnecessary engine idling.

Watch coolant temperature closely.

Check engine oil level

Check coolant level

Watch for any sign of leaks.

If engine oil must be added during break-in, use seasonal viscosity grade oil, meeting specifications given in "Fuel, Lubricants and Capacities" Section.

Check engine air intake system hoses and hose clamps for tightness.

Check drive belts for proper tension and adjust, if necessary.

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