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Muir-Hill 121

Muir-Hill 121 tractor
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The Muir-Hill 121 is a four-wheel drive (4WD) tractor built by Muir-Hill in Manchester, England from 1972 to 1983. It features a Ford 6.2L 6-cylinder diesel engine producing 120 hp (89.5 kW) with a direct injection fuel system and a rated speed of 2500 RPM. The tractor has an 8-speed gear transmission with 2 reverse gears and a 355.6mm dry disc clutch. It includes power steering, planetary final drives, hydraulic wet disc brakes, and a standard cab. The hydraulic system is open center with 2600 psi pressure and 11 gpm pump flow. The rear hitch is category II with position and draft control. The PTO is independent with hydraulic wet disc clutch and operates at 540 and 1000 RPM. Dimensions include a 75 inch wheelbase, 156 inch length, 82 inch width, and a weight of 10700 lbs. Tires are 13.6/12x38 front and rear. Electrical system includes a 12 volt alternator and 128 AH battery.
Muir-Hill 121tractor4WDFord 6.2L diesel engine120 hp8-speed transmissionhydraulic brakestractor dimensions
Power120 hp
Founded1972 - 1983
Model121

Technical Specifications

Detailed specifications and technical data for Muir-Hill 121

Power

Engine:120 hp (89.5 kW)
PTO (claimed):70 hp (52.2 kW)

Tires

Ag rear:13.6/12x38
Ag front:13.6/12x38

Engine

Type:diesel
Model:Ford 2715E
Power:120 hp (89.5 kW)
Torque:280 lb-ft (379.7 Nm)
Cooling:liquid-cooled
Starter:electric
Cylinders:6-cylinder
Fuel tank:48 gal (181.7 L)
Rated RPM:2500
Torque RPM:1600
Bore/Stroke:4.22x4.524 inches (107 x 115 mm)
Compression:16:1
Fuel system:direct injection
Displacement:380 ci (6.2 L)
Starter volts:12

Dimensions

Width:82 inches (208 cm)
Length:156 inches (396 cm)
Weight:10700 lbs (4853 kg)
Wheelbase:75 inches (190 cm)
Rear tread:64 to 80 inches (162 to 203 cm)
Front tread:64 to 80 inches (162 to 203 cm)

Electrical

Battery AH:128
Battery volts:12
Charging system:alternator

Hydraulics

Type:open center
Pressure:2600 psi (179.3 bar)
Pump flow:11 gpm (41.6 lpm)

Mechanical

Cab:standard
Drive:4x4 4WD
Brakes:Hydraulic wet disc brakes
Steering:power
Final drives:planetary

Production

Type:Four-wheel Drive (4WD) tractor
Built in:Manchester, England
Years made:1972 - 1983

Transmission

Type:gear
Gears:8 forward and 2 reverse
Clutch:355.6mm dry disc

Tractor hitch

Control:position and draft control
Rear Type:II

Power Take-off (PTO)

Clutch:hydraulic wet disc
Rear PTO:independent
Engine RPM:540@1750
Rear PTO Type:540 (1.375), 1000 (1.375)

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