New Holland T4.75F Operator's Manual page 237

FRONT AXLE
Central pivoting, telescopic, inverted "U" structure.
Track setting: by extending the axle. Total: 5 wheel tracks.
2WD FRONT WHEELS
Rims with integral sheet metal wheel disks.
4WD FRONT WHEELS
Wheels in two parts: sheet-metal wheel disc and tyre rim.
Track setting: variable fitting of rims to disks and wheel hubs.
REAR WHEELS
Wheels in two parts: sheet-metal wheel disc and tyre rim.
Track setting: variable fitting of rims to disks and wheel hubs.
STEERING SYSTEM
Hydrostatic control, independent circuit.
Metal cartridge oil filter, fitted in oil reservoir.
Gear pump operated directly by the engine, through timing gears:
Type NEW HOLLAND
with mechanical transmissions
with electro-hydraulic transmissions
pump speed with engine on full power:
corresponding flow :
With pump A25
With pump A31 XRP2
pressure relief valve calibration - models
Minimum turning radius not brake assisted:
Minimum turning radius brake assisted:
4WD FRONT AXLE
Controlled oscillation with co-axial drive shaft and pivoting on the longitudinal axis of the tractor. Differential
with two planetary pinions.
Transmissions with spur gears. Epicyclic reduction gears on wheel hubs with braking system (on request).
Standard front axle
Bevel gear pair ratios 30 km/h (18.64 mph)
Bevel gear pair ratios 40 km/h (24.9 mph)
with 20 " rear tyres
Bevel gear pair ratios 30 km/h (18.64 mph)
Bevel gear pair ratios 40 km/h (24.9 mph)
Minimum turning radius not brake assisted, four-wheel drive disengaged, four-wheel drive models:
not brake assisted
brake assisted
REAR SERVICE BRAKES
Oil-immersed disk brakes, hydrostatically operated with independent hydraulic circuits for right and left-hand
brakes, operated by separate pedals. The pedals must be connected for simultaneous braking on the four wheels
when driving on roads.
FRONT SERVICE BRAKES
Oil-immersed disk brakes, hydrostatically operated. The pedals must be connected for simultaneous braking on
the four wheels when driving on roads.
PARKING BRAKE ON TRANSMISSION
Disk brake, fully independent, mounted beneath gearbox and connected to pinion shaft.
Mechanically operated by lever.
9 - SPECIFICATIONS
A25
A31 XRP2
2502 RPM
28 l/min
35.6 l/min
170 bar (2465.0 psi)
3.4 m (133.86 in)
3.1 m (122.05 in)
11/36
11/28
13/37
-
10/29
3.3 m (129.92 in)
3.2 m (125.98 in)
9-11