Part of the New Holland Repair Manuals.
A round baler that quits mid-windrow never checks the forecast first, so the 358 pages of this New Holland 544, 548 repair manual PDF (OEM 604.66.111.00) are built for one outcome: getting either baler stripped, repaired, and wrapping again before the weather turns. Wiring diagrams for the Bale Command Plus system, the CropCutter circuit included, back up sensor calibration routines, harness connector repair, and troubleshooting charts that trace an electrical fault to the sensor or actuator causing it. Teardown procedures run from the PTO cut-out clutch and Comer gearbox through pick-up reel and cam track rebuilds to the twine and net wrap drives. Set the knife break-away spring at 415 mm, and when you refit the gearbox, pull the mounting bolts to 240 Nm. One invented torque figure can crack a housing. Bookmarked and text-searchable, the PDF lands you in the wiring section in two clicks, and your baler back in the field the same afternoon.
What's Inside This New Holland 544, 548 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 1-32 | Introduction, Important Information, Spare Parts, Safety Regulations, Product Identification |
| Implement Power Take-Off Driveline | 33-62 | P.T.O Clutch (Cut Out Clutch, Clutch Removal, Clutch Assembly) |
| Hydraulic Systems | 63-78 | Hydraulics (Pick-Up Lift Cylinder, Cylinder Seal Kit Replacement, Lock-Out Valve Replacement, Tailgate Lift Cylinders, Checking Cylinder Characteristics, Density Cylinders, Checking the Oil and Accumulator Pressure, Accumulator Filling, Cylinder Filling, Automatic Oiler, Greasing Lines and Metering Units) |
| Wheels and Tyres | 79-80 | General (Tyre Specifications, Axle Components) |
| Electrical System | 81-142 | Electrics (Bale Command Plus Monitors, Set-Up and Diagnostics, Bale Density Sensors Mounting, Diagnostics, Calibration, Duckbill/Knife Actuator Sensor, Sensor and Actuator Disassembly/Assembly, Twine Actuator Sensor, CropCutter Actuator Sensor, Tailgate Switches, Net Metering Roll Sensor, Bale Shape Sensitivity, Software Revision Number, Operator Panel Test, Keypad Check, Supply Voltage Check, Twine Wrap, Wiring Diagram, CropCutter Wiring Diagram, Serviceable Operator Panel Components, Serviceable Controller Components, Harness Connector Repair, Troubleshooting, Twine/Net Actuator Test Procedure, Dealer Pre Delivery Set-Up) |
| Product Feeding | 143-238 | Pick Up (Standard Pick-Up, Removal and Installation, Installation, Cam Track Replacement, Assembly, Pick-Up Reel, Reel Drive, Cam Track Disassembly, Cam Track Assembly, Cam Track Roll Disassembly and Assembly, Pick-Up Tine Replacement) |
| Ancilliary Equipment | 239-358 | Twine Wrap Kit, Overrun Clutch, Duck Bill Baffle, Tailgate Narrowing Plate, Plastic Film Knife |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 544 | ||
| Apron conveyor chain length | 6706 mm | p. 27 |
| Cut-out clutch torque (Model 544) | 1300 Nm | p. 16 |
| All Models | ||
| gearbox mounting bolts torque | 240 Nm | p. 43 |
| Distance between lock nut and bottom end of knife breakaway link slot | 2 mm | p. 110 |
| Cam follower bearing nut torque | 72 Nm | p. 144 |
| knife break-away spring length | 415 mm | p. 175 |
| Gearbox oil capacity (general Lubricants table, Specifications table gives approx. 1.70 L on p. 30) | 1 litre | p. 22 |
| Automatic lubrication system capacity | 3 litres | p. 22 |
| Bale chamber width | 120 cm | p. 24 |
| Bale chamber diameter | 120 cm | p. 24 |
| Maximum bale weight | 800 kg | p. 24 |
| 548 | ||
| Cut-out clutch torque (Model 548) | 1500 Nm | p. 17 |
New Holland 544, 548 Common Problems This Manual Covers
New Holland 544 round baler plugs in heavy windrows, pickup jams and won't feed first-cut hay
Remove the wad with the PTO shut off and the tailgate open, then slow ground speed and keep the windrow centered on the pickup. Inspect the tines and cam track for wear using the pickup procedures starting on page 143, and torque the cam follower arm nut to 72 Nm per page 146 on reassembly.
Manual Section: Product Feeding p. 143Shear pins break every few bales in dry straw or cornstalks, drive binds and pin snaps
Clean packed chaff from the rolls and exposed drive gears before fitting another pin. Spin each roller bearing and replace any that feel rough. Check the cross drive shaft and overrun clutch in the rotor module on page 168, torquing the shaft screws to 97 Nm, then run the PTO cut-out clutch check on page 33.
Manual Section: Rotor Module Repair p. 168Net wrap won't start or knife hangs mid-cycle, buzzer stays on and lateral arrow flashes
Clean oil film and chaff off the duckbill and knife linkage, then cycle it by hand until it snaps home. Adjust the lock nut to 2 mm from the bottom end of the knife breakaway link slot per page 110. If the buzzer still stays on, run the actuator sensor checks starting.
Manual Section: Electrical System p. 110CropCutter knives kick out in heavy crop and stalks pass through uncut
Remove compacted crop from the knife slots and rotor scrapers with the knives dropped. Check each knife break-away spring and set its length to 415 mm following the rotor module procedures on page 175. Replace any knife with a rounded edge; a dull blade trips the break-away long before a sharp one.
Manual Section: Rotor Module Repair p. 175Main gearbox whines under load, runs hot, or weeps oil around the housing
Drain the gearbox and refill with fresh oil: 1 litre for the US gearbox (page 22) or 1.70 litre for the Comer unit (page 30). Check the mounting bolts and torque them to 240 Nm per page 43. If the whine remains, pull the unit and inspect the gears and bearings for wear before harvest catches you short.
Manual Section: Implement Power Take-Off Driveline p. 43Frequently Asked Questions
What are the torque specifications for M10 bolts on the New Holland 544, 548 round baler?
For zinc-coated or bichromated metric hardware (without oiling), the tightening torque for an M10 bolt is 60 Nm. If the hardware is zinc-coated or bichromated with oiling, the tightening torque for an M10 bolt is 42 Nm. p. 21
What is the recommended gearbox oil capacity for the 544 and 548 round balers?
The manual lists two different gearbox oil capacities: 1 litre in the general Lubricants table (p. 22) and approximately 1.70 litres in the Specifications table (p. 30). This manual covers two separate gearbox designs, GEARBOX (US) and GEARBOX (COMER), each with its own fill amount, and neither page states which design its figure describes. Check which gearbox is fitted to your baler, or verify the level directly, before refilling. p. 30
How do I calibrate the empty position for the bale density sensors?
To calibrate the empty position, ensure the tailgate is closed and empty. Press and hold the MINUS key for 1 second while in page 10 of the set-up/diagnostic mode. The alarm will sound to confirm the calibration. p. 89
What is the required torque for the gearbox mounting bolts on a New Holland 544, 548 baler?
The gearbox mounting bolts must be tightened to a torque of 240 Nm. p. 43
What is the correct procedure for checking the P.T.O. cut-out clutch torque on a New Holland 544, 548?
The torque setting is 1300 Nm on the 544 (p. 16) and 1500 Nm on the 548 (p. 17). To check it on either baler, attach a weighing scale to a 2-meter lever and pull until the clutch cuts out. For the 548's 1500 Nm setting, correcting for the weight of the tool and scale, approximately 700 Nm of pull is needed on the scale; the manual does not give the equivalent figure for the 544's 1300 Nm setting. p. 34
How will I receive this New Holland 544 Repair Manual?
Instant PDF download. You get the full 358-page searchable Repair Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Am I free to print this New Holland 544 Repair Manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Reviews
There are no reviews yet.