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New Holland T-550

New Holland T-550 tractor
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The New Holland T-550 is a trencher tractor produced from 1973 to 1974 by New Holland, a part of Sperry. Built in Belleville, Pennsylvania, USA, it features a Wisconsin 2.5L 4-cylinder gasoline engine producing 37 hp (27.6 kW) gross power. The tractor uses a hydrostatic transmission with infinite forward and reverse speeds in two ranges. It has four-wheel drive and hydraulic articulated steering with a two-post fixed ROPS. Fuel capacity is 13.5 gallons (51.1 L) and the hydraulic system holds 13 gallons (49.2 L) split between front and rear reservoirs. The open center hydraulic system operates at 2250 psi with a pump flow of 3.63 gpm. Dimensions include a length of 193.75 inches (492 cm), minimum width of 50.5 inches (128 cm), height with ROPS of 90.625 inches (230 cm), and base weight of 3460 lbs (1569 kg). Tires are available in lawn/turf and industrial sizes. Attachments include a 56-inch front-mount blade with hydraulic lift and angle, and the New Holland SD-100 backhoe weighing 998 lbs (452 kg). Trencher attachments range from 36 to 72 inches in length with widths of 3 to 6 inches.
New Holland T-550trencher tractorWisconsin VG4D enginehydrostatic transmission37 hp tractor1973 tractor1974 tractorindustrial tractortractor attachmentstractor dimensions
Power-
Founded-
ModelT-550

Technical Specifications

Detailed specifications and technical data for New Holland T-550

Power

Engine (gross):37 hp (27.6 kW)

Tires

Lawn/turf rear:26x12.00-12
Industrial rear:26x12.00-12, 27x8.50-15
Lawn/turf front:26x12.00-12
Industrial front:26x12.00-12, 27x8.50-15

Engine

Type:gasoline
Model:Wisconsin VG4D
Starter:electric
Idle RPM:900-2550
Cylinders:4-cylinder
Rated RPM:2400
Air cleaner:dry
Bore/Stroke:3.50x4.00 inches (89 x 102 mm)
Fuel system:carburetor
Displacement:154 ci (2.5 L)
Oil capacity:5 qts (4.7 L)
Configuration:air-cooled horizontal-shaft V-4
Power (gross):37 hp (27.6 kW)
Starter volts:12

Capacity

Fuel:13.5 gal (51.1 L)
Hydraulic system:13 gal (49.2 L) - Two 6.5 gallon reservoirs, front and rear

Dimensions

Width:50.5 inches (128 cm) - Minimum width
Length:193.75 inches (492 cm)
Weight:3460 lbs (1569 kg) - Base unit only
Height (ROPS):90.625 inches (230 cm)
36-inch trencher:272 lbs (123 kg)
48-inch trencher:331 lbs (150 kg)
60-inch trencher:390 lbs (176 kg)
72-inch trencher:473 lbs (214 kg)
Ground clearance:6 inches (15 cm)

Electrical

Battery AH:50
Battery volts:12
Charging amps:30
Charging system:alternator

Hydraulics

Type:open center
Capacity:13 gal (49.2 L) - Two 6.5 gallon reservoirs, front and rear
Pressure:2250 psi (155.1 bar)
Pump flow:3.63 gpm (13.7 lpm)

Mechanical

ROPS:Two-post fixed ROPS
Drive:Four-wheel drive
Steering:hydraulic articulated

Production

Type:Trencher
Built in:Belleville, Pennsylvania, USA
Years made:1973 - 1974
Manufacturer:New Holland (a part of Sperry)

Attachments

Blade:56 inches width (142 cm), front-mount, angling 40°, hydraulic-lift, hydraulic-angle
Backhoe:New Holland SD-100 Backhoe, Weight 998 lbs (452 kg)
Trenchers:Available from 36 to 72 inches, with widths of 3 to 6 inches

Transmission

Type:hydrostatic
Gears:infinite forward and reverse (2-range)