Part of the New Holland Repair Manuals.
This is the full repair manual bundle for New Holland's self-propelled FX forage harvesters - FX25, FX28, FX38, FX45, FX48, FX58, the FX300/FX375/FX450 line, and the later FX9630/FX9640/FX9645 machines, across the several publication editions New Holland issued for these models. Inside you get per-model coverage of engine overhaul and live PTO, transmission with 4WD and hydrostatic drive, brakes, hydraulic pumps and valves with circuit test procedures, cab climate control, electrical wiring, and the forage-specific end of the machine: product feeding, chopping drum and knives, and crop ejection. If you are keeping one of these harvesters cutting through silage season without a dealer on call, this is the reference the dealer techs used.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Cutterhead gearbox | ||
| Cutterhead gearbox capacity | 4.3 litres | p. 16 |
| Blower gearbox | ||
| Blower gearbox capacity | 1.4 litres | p. 16 |
| High speed blower gearbox [if installed] | ||
| High speed blower gearbox capacity | 0.7 litres | p. 16 |
| Attachment drive gearbox | ||
| Attachment drive gearbox capacity | 1.8 litres | p. 16 |
| Hydroloc gearbox | ||
| Hydroloc gearbox capacity | 7.25 litres | p. 16 |
| Upper feed roll drive gearbox | ||
| Upper feed roll drive gearbox capacity | 1.4 litres | p. 17 |
| Traction gearbox | ||
| Traction gearbox capacity | 15 litres | p. 17 |
| Final drive gearbox | ||
| Final drive gearbox capacity | 5 litres | p. 17 |
| Four-wheel drive gearbox [if installed] | ||
| Four-wheel drive gearbox capacity | 1.4 litres | p. 17 |
| Four wheel drive steering axle [if installed] | ||
| Four wheel drive steering axle capacity | 10 litres | p. 17 |
| 4WD steering axle planetary final drives [if installed] | ||
| 4WD steering axle planetary final drives capacity | 1 litre | p. 17 |
| FX30 | ||
| Engine oil capacity (oil + filters) | 29 litres | p. 18 |
| FX40-50 | ||
| Engine oil capacity (oil + filters) | 35 litres | p. 18 |
| FX60 | ||
| Engine oil capacity (oil + filters) | 34 litres | p. 18 |
New Holland FX25-FX9645 Common Problems This Manual Covers
Engine loses power or stalls when the machine loads up in heavy crop
Nine times out of ten this is fuel starvation or a choked air intake, not a worn engine. The Engine and Live PTO section walks the fuel and cooling systems - filter service, fuel delivery checks, and intake inspection - so you can restore full power before condemning the injection pump.
Manual Section: Engine & Live PTOLong, uneven chop and rising fuel burn instead of a clean short cut
Dull knives and a shear bar that has walked out of adjustment. The Forage Systems section covers chopping drum service, knife replacement and sharpening, and shear bar setting, so you get the clearance back where it belongs and the cut quality returns with it.
Manual Section: Forage Systems - Feeding, Chopping & EjectionHydraulic system runs hot and lift or steering assist fades during long days
Usually worn pump or leaking seals letting oil bypass and turn to heat, or a plugged filter. The Brakes and Hydraulic System section gives circuit test procedures to measure pressure and flow, pinpoint the failing component, and service pumps, valves and seals correctly.
Manual Section: Brakes & Hydraulic SystemFeeding system plugs or the crop flow surges instead of feeding smoothly into the drum
Feed roll drive, tensioning and clearance problems compound fast in wet crop. The Forage Systems section covers product feeding component service and adjustment so the rolls pull material in evenly, which protects the drum and blower downstream from slugs and blockages.
Manual Section: Forage Systems - Feeding, Chopping & EjectionFrequently Asked Questions
Does this cover setting the shear bar and sharpening the chopping drum knives?
Yes. The Forage Systems section covers the chopping drum and knives in full - knife removal and replacement, sharpening procedure, and shear bar adjustment. On these machines knife-to-shear-bar clearance is the difference between clean short chop and long ragged strands that plug the blower, so this is the section that pays for the manual on its own. Owners running heavy silage report knives needing attention every couple hundred hours, so you will be in here often.
My hydraulics overheat and the header lift gets weak under load. Will this manual help me trace it?
Yes. The Brakes and Hydraulic System section includes pump and valve service plus circuit test procedures, so you can put a gauge on the system and find out whether you have a tired pump, an internal leak past worn seals, a plugged filter starving the circuit, or a relief valve bleeding off. That beats swapping parts on a guess, because on these machines all three causes feel identical from the cab.
Which exact models and editions are in this bundle?
This is a multi-manual set covering the FX25, FX28, FX38, FX45, FX48 and FX58, the FX300, FX375 and FX450, and the FX9630, FX9640 and FX9645, across the multiple repair manual editions New Holland published for these series from the late 1990s into the early 2000s. Coverage is per model, so you follow the book for your machine rather than a generic writeup, which matters because the driveline and hydraulics differ between the small-frame and large-frame machines.
Does it cover the hydrostatic drive and 4WD, or just the cutting side of the machine?
The whole machine. The Transmission, 4WD and Hydrostatic Drive section covers the hydrostatic system, the transmission and 4WD lines, and the front mechanical drive. So if the machine creeps in neutral, loses ground speed on a hill, or a 4WD line lets go in the field, the diagnostic and repair procedures are in here alongside the forage equipment sections.
Is there electrical and cab coverage, and are wiring diagrams included?
Yes. The Cab Climate and Electrical System section covers the electrical system with wiring, lighting and controls, plus the cab heating and air conditioning. These are electro-hydraulically controlled machines, not computerized ones, so most electrical faults come down to a relay, a switch, a ground, or a chafed harness - and wiring coverage is how you chase those instead of guessing. Handy when the AC quits in August with three hundred acres of corn standing.
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