New Holland HW305, HW305S, HW325 SP Windrower Pdf Repair Service Manual (p. Nb. 87576230)

New Holland HW305, HW305S, HW325 SP Windrower PDF Repair Service Manual (Publication No. 87576230)

The New Holland HW305, HW305S and HW325 Self-Propelled Windrowers are engineered to deliver fast, clean and efficient forage harvesting across a wide variety of hay crops. Built for commercial hay producers and large farming operations, these windrowers combine powerful self-propelled performance with precision cutterbar technology and efficient crop conditioning to produce uniform windrows that promote faster drying and improved forage quality.

Continuous field operation places heavy loads on the cutterbar drive, conditioning rolls, header flotation system, hydrostatic transmission, hydraulic circuits and electronic machine controls. This OEM Factory Repair Service Manual (Publication No. 87576230) provides complete dealership workshop procedures for diagnostics, inspection, repair, calibration, adjustment and complete component overhaul, helping technicians restore dependable harvesting performance while minimizing downtime during the hay season.

Built for High-Capacity Hay Production

The HW300 Series was developed to maximize productivity while maintaining consistent crop conditioning. Its self-propelled platform delivers smooth field handling, while the floating header follows uneven ground to reduce scalping and crop loss. Adjustable conditioning systems allow operators to produce uniform windrows across varying crop densities, improving drying efficiency before baling.

Machine Information

Factory Workshop Coverage

Professional Repair Procedures

• Rebuild cutterbar assemblies using OEM workshop procedures.
• Inspect disc modules, bearings and gear drive components for wear.
• Adjust conditioning rolls to achieve consistent crop conditioning.
• Repair hydrostatic transmission components using factory testing procedures.
• Service hydraulic pumps, steering circuits, valves and lift cylinders.
• Calibrate header flotation to improve cutting performance over uneven terrain.
• Inspect wheel hubs, steering linkage and chassis components for safe operation.
• Diagnose electrical faults using factory wiring diagrams and systematic testing methods.
• Replace bearings, seals and drive components according to OEM service limits.
• Use exploded workshop illustrations for accurate component identification.
• Apply factory torque values and adjustment specifications throughout every repair.
• Carry out complete cutting and conditioning performance tests before returning the windrower to field service.

Manual Specifications

Frequently Asked Questions

Which windrower models are covered by this repair manual?

This OEM factory workshop manual covers the New Holland HW305, HW305S and HW325 Self-Propelled Windrower models.

Does the manual include cutterbar and conditioning system repairs?

Yes. It provides complete procedures for servicing the disc cutterbar, conditioning rolls, header flotation system, drive components and related harvesting assemblies.

Are hydrostatic drive and hydraulic systems covered?

Yes. The manual includes diagnostics, testing, repair and overhaul procedures for hydrostatic transmission components, hydraulic pumps, steering circuits, valves and lift cylinders.

Does the manual include electrical wiring diagrams?

Yes. Factory wiring diagrams, electronic troubleshooting procedures, sensor diagnostics and charging system information are included throughout the manual.

Who should use this workshop repair manual?

This manual is designed for New Holland dealership technicians, agricultural equipment repair workshops, commercial hay producers, farm maintenance departments and experienced mechanics servicing HW305, HW305S and HW325 Self-Propelled Windrowers.