

The John Deere Sprayer 4940 is a high-performance agricultural sprayer designed for efficient crop protection. This versatile asset features advanced technology and robust construction, making it ideal for large-scale farming operations. Regular maintenance ensures optimal performance and longevity of the equipment.
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Tensioning Guide
Belt-diagram
C-120 pulleys
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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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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Drive Motor
B2 Rollers
Tensioning System
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John Deere Sprayer 4940
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1000 Hourly Sprayer Maintenance
Test Coolant
Hood raised
Pressure relieved from de-aeration tank cap
Cap removed from de-aeration tank
Enter the coolant solution test results
Coolant tested using TY26605 COOL-GARD™II 3-way test strips
TY26603 COOL-GARD II Coolant Extender added as indicated by the color matrix on reader card in test strip pack
Small amount of coolant drained from system before extender is added if tank is too full
De-aeration tank cap installed
100 Hourly Sprayer Maintenance
Adjust tread adjust shims
Activate tread adjust until axle tubes are fully extended
Remove cap screws (A) and coat with anti-seize compound
Install and tighten cap screws (A) to specification
Repeat tightening until all three cap screws torques are maintained
Loosen cap screws (A) 1/6 of a turn
Tighten jam nuts (B) to specification
Adjust the tread adjust sensors
Lubricate steering cylinder tie rod ends
10 Hourly Sprayer Maintenance
Wheel hardware tightened
Solution tank straps checked
Fill solution tank
Solution tank straps tightness checked
Solution tank straps tightened if loose
Center frame lubricated
Boom lift arm pivots lubricated
1 Daily Sprayer Maintenance
Check engine oil level
Check coolant level
Drain fuel filter water separator
Check hydraulic oil level
Clean pressure line strainer
1. Close flowmeter shut-off valve (A).
2. Remove plug (A) and drain solution into bucket or suitable container.
3. Loosen and remove ring nut (B).
4. Remove cover (C) from end of strainer body (D) and drain solution into bucket or suitable container.
1 Yearly Sprayer Maintenance
Replace cab air filters
Replace air compressor air dryer cartridge
Relieve air system pressure by opening valve (A)
Remove cap screws (A), nuts, and clamps that secure alternator harness
Remove cap screws (B) and tilt air dryer and mounting bracket assembly (C) until dryer cartridge can be accessed
Using a strap wrench, turn the desiccant cartridge (A) counterclockwise, remove and discard
Remove and discard O-ring (B) from adapter plate stud
Clean top surface of adapter plate (D) and threaded stud
Apply a light coat of grease (supplied with new cartridge) to O-ring. Install O-ring on adapter plate
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