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White Field Boss 31

The White Field Boss 31 is a compact utility tractor built by Iseki and distributed by White from 1986 to 1988. It features a 30 hp Isuzu 1.5L 3-cylinder diesel engine, a 12-speed partially synchronized transmission, and options for two- or four-wheel drive. The tractor includes mechanical wet disc brakes, two-post ROPS with optional canopy and radio, and an open center hydraulic system with 2135 psi pressure and 7.7 gpm flow. It has a rear I-type hitch and independent rear PTO with 540 rpm and a live front PTO at 2600 rpm. Dimensions include a 65 inch wheelbase, 116 inch length, and weights ranging from 2215 to 2414 pounds depending on configuration. The Field Boss 31 supports various attachments including front-end loaders (1045QA and 1155 QA) and rear mowers, blades, box scrapers, and PTO-drive tillers. Electrical system is 12 volts with a 35 amp alternator and negative ground.
White Field Boss 31Field Boss 31Iseki tractorcompact utility tractor30 hp tractorIsuzu diesel engine12-speed transmissionfront-end loaderPTOhydraulicstractor dimensions
Power-
Founded-
ModelField Boss 31

Technical Specifications

Detailed specifications and technical data for White Field Boss 31

Power

Engine:30 hp (22.4 kW)
PTO (claimed):25 hp (18.6 kW)

Tires

Lawn/turf rear:355x800-20
2WD Lawn/turf front:24x8.50-12
4WD Lawn/turf front:212x800-15
2WD Standard tires (ag):Front: 5.00-15. Rear: 11.2-24
4WD Standard tires (ag):Front: 7.00-16. Rear: 11.2-24

Engine

Make:Isuzu
Type:1.5L 3-cyl diesel
Power:30 hp (22.4 kW)
Idle RPM:850-2860
Fuel tank:7.4 gal (28.0 L)
Rated RPM:2600
Bore/Stroke:3.39x3.39 inches (86 x 86 mm)
Compression:21.4:1
Displacement:91.4 ci (1.5 L)
Starter volts:12

Dimensions

Width:52 inches (132 cm)
Length:116 inches (294 cm)
Wheelbase:65 inches (165 cm)
Rear tread:40.2 to 52.8 inches (102 to 134 cm)
2WD Front tread:37.8 to 41.7 inches (96 to 105 cm)
4WD Front tread:41.3 inches (104 cm)
Height (exhaust):80 inches (203 cm)
2WD Shipping weight:2215 lbs (1004 kg)
4WD Shipping weight:2414 lbs (1094 kg)

Electrical

Ground:negative
Battery volts:12
Charging amps:35
Charging system:alternator

Hydraulics

Type:open center
Pressure:2135 psi (147.2 bar)
Total flow:7.7 gpm (29.1 lpm)

Mechanical

ROPS:Two-post ROPS. Optional canopy and radio.
Drive:Two- or four-wheel drive
Brakes:Mechanical wet discs brakes
2WD Steering:manual
4WD Steering:power

Production

Type:Compact Utility tractor
Distributor:White
Manufacturer:Iseki
Original price:$9,000 in 1988
Production years:1986 - 1988

Attachments

1045QA Loader

Breakout force:1500 lbs (680 kg)
Lift capacity (full at pin):1000 lbs (453 kg)

1155 QA Loader

Dump angle:45°
Dump reach:19.5 inches (49 cm)
Bucket width:60 inches (152 cm)
Ground reach:57 inches (144 cm)
Breakout force:1850 lbs (839 kg)
Rollback angle:22°
Height (at pin):96 inches (243 cm)
Clearance (dumped):76.5 inches (194 cm)
Boom cylinder diameter:1.75 inches (4 cm)
Bucket cylinder diameter:1.75 inches (4 cm)
Lift capacity (full at pin):900 lbs (408 kg)
Front-end loader:Yes
Attachment overview:White 1045QA loader, White 1155 QA loader, Rear mowers for the Field Boss 31 included finishing (48, 60, or 72 inch), flail (50 or 60 inch), and rotary cutters (48 or 60 inch). Rear blades in 5 or 6 foot widths, plus a 4.5 foot box scraper could be fitted. PTO-drive tillers were available in 40, 52, or 60 inch widths.

Transmission

Type:partially synchronized
Gears:12 forward and 4 reverse
Details:Three synchronized gears in four ranges.
Description:Triple-sync

Tractor hitch

Rear Type:I

Serial Numbers

1986 2WD:TE4300TM00126
1986 4WD:TE4300FS00028
1987 2WD:TE4300TM00163
1987 4WD:TE4300FS00175
1988 2WD:TE4300TM00276
1988 4WD:TE4300FS00568
Location:Tractor frame on left

Power Take-off (PTO)

Rear PTO:independent
Front PTO:live
Rear PTO Type:540 (1.375)
Front PTO Type:2600