New Holland HM234, HM235, HM236 Disc Mower Pdf Repair Service Manual (p. Nb. 87392141)

New Holland HM234, HM235 & HM236 Disc Mower PDF Repair Service Manual (Publication No. 87392141)

The New Holland HM234, HM235 and HM236 Disc Mowers are built to deliver dependable cutting performance for hay producers, livestock farms and commercial forage operations. Designed with a heavy-duty cutterbar, reversible high-strength blades and a simple yet durable driveline, these machines provide smooth crop flow while maintaining excellent cutting quality across varying field conditions. Their rugged construction helps reduce downtime and increase productivity during demanding mowing seasons.

This OEM Factory Repair Service Manual is the same workshop reference used by New Holland dealership technicians. Publication 87392141 contains step-by-step repair procedures, diagnostic information, adjustment specifications and detailed technical illustrations that simplify servicing, rebuilding and troubleshooting every major machine system.

Equipment Information

Factory Repair Coverage

What This OEM Manual Helps You Do

• Diagnose cutterbar vibration and abnormal operating noise.
• Repair damaged gearbox components and seals.
• Service the PTO driveline and overrunning clutch.
• Replace worn disc hubs, blades and bearings.
• Adjust cutterbar alignment for clean cutting performance.
• Troubleshoot hydraulic lift system faults.
• Perform complete machine inspections using factory specifications.
• Reassemble major components with correct torque settings.
• Reduce downtime with accurate workshop repair procedures.
• Carry out professional repairs using official New Holland service information.

Manual Specifications

Frequently Asked Questions

Which models are included in this repair manual?

This manual covers the New Holland HM234, HM235 and HM236 Disc Mowers.

Does this manual include cutterbar repair procedures?

Yes. It includes complete cutterbar disassembly, inspection, rebuilding, timing adjustments and servicing instructions.

Are PTO and gearbox repairs covered?

Yes. The manual contains detailed procedures for the PTO driveline, overrunning clutch, gearbox components and lubrication systems.

Does the manual include hydraulic system servicing?

Yes. Hydraulic lift system diagnostics, component repairs and adjustment procedures are included.

Who should use this workshop manual?

This manual is ideal for dealership technicians, agricultural repair workshops, hay equipment owners, commercial forage contractors and experienced mechanics who require OEM repair information.