Case DC105, DC125, DC135, DC165 Disc Mower Service Manual

These Case DC105–DC165 disc mowers spend their lives in rough hay fields, chewing through grass and light forage, often in dusty, uneven conditions. This service manual is what I’d keep on the bench when I need to trace a vibration, chase down a bad cut pattern, or put a mower back together after a rock strike. For example, if a customer complains the mower is leaving streaks on one side, this book walks me through how to inspect the cutterbar, verify PTO drive condition, and methodically isolate whether it’s a knife, a hub, or a driveline issue before I start throwing parts at it.

Applications & Use Cases

• Track down no-drive or slipping PTO issues by following a logical test and inspection sequence.
• Disassemble and reassemble the cutterbar and driveline so gears, hubs, and shields go back aligned and sealed correctly.
• Diagnose uneven cutting height or streaking by checking frame, suspension, and wheel setups step by step.
• Verify and adjust hydraulic lift and folding functions to prevent binding or uncontrolled movements.
• Plan safe electrical and lighting checks for transport-related faults or intermittent power loss.

FAQ

Q: Can I use this manual on a tablet in the field?

A: Yes, it works well digitally so you can zoom diagrams and search text while you’re parked at the edge of the field.

Q: Is it worth printing sections of this manual?

A: Many techs print the key procedures they use most, then keep the full manual on a laptop for deeper diagnostics.

Safety Note

Always support raised components securely and relieve hydraulic and PTO energy before you start loosening anything.

Case DC105, DC125, DC135, DC165 Disc Mower Index:

INTRODUCTION
Power Take-Off (PTO)
Hydraulic systems
Frames and ballasting
Wheels
Electrical systems
Attachments/Headers
Product feeding
Special Tool Index

CNH