New Holland 6635

Last Updated: July 2024

Overview

The New Holland 6635 is a utility tractor equipped with an Iveco 8045.25 turbocharged diesel engine producing 75.69 hp at 2495 rpm. Key specifications include a 4x2 2WD chassis, power steering, 24 forward and 12 reverse gears, liquid cooling system, and 8-valve configuration. Fuel consumption is 4.65 gal/hr at maximum power with 0.423 lb/hp.hr efficiency. Maximum torque is 206.6 lb-ft at 1364 rpm with 29.5% torque rise. The hydraulic system delivers 15.3 GPM at 2540 psi pressure and 21.5 hp power. Operating weights are 7720 lbs for 2WD and 8310 lbs for 4WD. Detailed tire sizes, pressures, turning radii, PTO speeds, and three-point hitch performance data have been added from the test results.

Key Specifications

Category: Utility

Power Output: 75.69

Transmission: Partial Power Shift

Drive Type: 2WD

Operating Weight: 7720 (2WD), 8310 (4WD)

Fuel Type: Diesel (No. 2 Diesel, API service classification SE/CD)

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New Holland 6635 Tractor

New Holland 6635 vs. Similar Tractors

Power Output

Above Average

Greater than 74% of similar tractors.

Operating Weight

Excellent

Greater than 91% of similar tractors.

Technical Specifications

Engine

Manufacturer: Iveco
Model: 8045.25
Cooling Type: Liquid-cooled
Cylinder Orientation: -
Valve Configuration: 8-valve
Fuel Type: Diesel (No. 2 Diesel, API service classification SE/CD)
Induction Type: Turbocharged
Cylinders: 4
Displacement (ci): 238
Bore (in): 4.094
Stroke (in): 4.527
Rated RPM: 2500
Power Output (hp): 75.69

Transmission

Type: Partial Power Shift
Forward Gears: 24
Reverse Gears: 12
Total Gears: -

Dimensions

Length (in): -
Width (in): 72.6
Height (in): 105.5 (ROPS), 97.5 (Cab)
Operating Weight (lb): 7720 (2WD), 8310 (4WD)

Power Take-Off (PTO)

PTO Type: Optional Transmission or Live PTO
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: 4x2 2WD
Drive Type: 2WD
Steering Type: Power
Coolant Capacity (qts): 14.8
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: Ag
Manufacture - End Year: 1999
Hitch Type: Three-Point Hitch
Hitch Category: Category II
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: ROPS, Cab available
Starter Type: Electric
Brake Type: -
Hydraulic System Type: Open Center

Test Results

Nebraska Tractor Test Laboratory - Test Date: July to November 1996

Maximum Power and Fuel Consumption

Maximum Power: 75.69 HP (56.44 kW) at 2495 rpm
Fuel Consumption at Maximum Power: 4.65 Gal/hr (17.59 l/h) with a fuel efficiency of 0.423 lb/hp.hr (0.257 kg/kW.h)
Standard PTO Speed (1000 rpm): 2383 rpm, consuming 4.55 Gal/hr (17.24 l/h)

Drawbar Performance

Power at Rated Engine Speed (13th Gear): 58.17 HP (43.60 kW) with a drawbar pull of 7495 lbs (33.34 kN) and a speed of 4.59 mph (7.38 km/h)
Fuel Consumption at Rated Speed (13th Gear): 0.519 lb/hp.hr (0.316 kg/kW.h) with a fuel efficiency of 13.35 Hp.hr/gal (2.63 kW.h/l)

Torque and Engine Performance

Maximum Torque: 206.6 lb.-ft. (280.1 Nm) at 1364 rpm
Torque Rise: 29.5%

Hydraulic Performance

Maximum Force Exerted: 6439 lbs (28.6 kN) at hitch points (without boost cylinder)
Pump Delivery Rate: 15.3 GPM (58.0 l/min) at minimum pressure and rated engine speed
Hydraulic Power: 21.5 HP (16.0 kW) at delivery pressure of 2540 psi (175 bar)

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (1000 rpm): 16.62 Hp.hr/gal (3.27 kW.h/l)
Fuel Consumption: 4.55 Gal/hr (17.24 l/h) at standard PTO speed

Nebraska Tractor Test Lab.(1996).Nebraska Summary: S246 New Holland 6635. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from DigitalCommons@University of Nebraska - Lincoln