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John Deere 644C

John Deere 644C tractor
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The John Deere 644C is a wheel loader produced from 1981 to 1984. It features a John Deere 7.6L 6-cylinder turbocharged intercooled diesel engine delivering 167 hp gross and 152 hp net. The loader has a 4-speed power shift transmission with 4 forward and 2 reverse gears, four-wheel drive with inboard planetary final drives, articulated power steering, and hydraulic wet disc brakes. It has a four-post ROPS with canopy and optional cab with air-conditioning. The hydraulics system is open center with 2625 psi pressure and 58 gpm pump flow. Dimensions include a 115 inch wheelbase, 271.5 inch length, 100.5 inch width (without bucket), and operating weight of 28534 lbs. The loader attachment offers 14775 lbs lift capacity at full pin, 24511 lbs breakout force, and a bucket width of 104.75 inches. Electrical system includes a 12 volt alternator and three batteries with 625 CCA each.
John Deere 644Cwheel loadertractorspecificationsenginetransmissiondimensionshydraulicsattachments
Power-
Founded-
Model644C

Technical Specifications

Detailed specifications and technical data for John Deere 644C

Power

Engine (net):152 hp (113.3 kW)
Engine (gross):167 hp (124.5 kW)

Tires

Industrial rear:20.5-25, 23.5-25
Industrial front:20.5-25, 16.00-24

Engine

Type:turbocharged intercooled diesel, 6-cylinder, liquid-cooled
Model:John Deere 7.6L 6-cyl diesel
Torque:472 lb-ft (640.0 Nm)
Starter:electric
Fuel tank:56 gal (212.0 L)
Rated RPM:2200
Torque RPM:1300
Air cleaner:dry
Bore/Stroke:4.56x4.75 inches (116 x 121 mm)
Power (net):152 hp (113.3 kW)
Displacement:466 ci (7.6 L)
Oil capacity:20 qts (18.9 L)
Power (gross):167 hp (124.5 kW)
Starter volts:12
Coolant capacity:472 qts (446.7 L)

Dimensions

Width:100.5 inches (255 cm) *Width without bucket.
Length:271.5 inches (689 cm)
Wheelbase:115 inches (292 cm)
Rear tread:80 inches (203 cm)
Front tread:80 inches (203 cm)
Height (ROPS):125.1 inches (317 cm)
Height (exhaust):123 inches (312 cm)
Operating weight:28534 lbs (12943 kg)

Electrical

Batteries:3
Battery CCA:625
Battery Group:BCI 31
Battery volts:12
Charging system:alternator

Hydraulics

Type:open center
Pressure:2625 psi (181.0 bar)
Pump flow:58 gpm (219.5 lpm)

Mechanical

ROPS:Four-post ROPS with canopy. Cab optional with available air-conditioning.
Drive:Four-wheel drive
Brakes:Hydraulic wet disc brakes
Steering:Articulated power steering
Final drives:inboard planetary

Production

Type:Wheel Loader
Manufacturer:John Deere
Years produced:1981 - 1984

Attachments

Loader:14775 lbs lift (full at pin) (6701 kg), 24511 lbs breakout (11118 kg), 50° dump, 37.4 inches reach (dumped) (94 cm), 40° rollback (ground line), 151.2 inches height (at pin) (384 cm), 116.2 inches clearance (dumped) (295 cm), boom cyl: 6.25 inches (15 cm), boom rod: 2.75 inches (6 cm), bucket cyl: 6.25 inches (15 cm), bucket rod: 3.00 inches (7 cm), raise: 6.6s, dump: 2.0s, lower: 4.5s, Bucket width: 104.75 inches (266 cm)

Transmission

Type:power shift
Gears:4 forward and 2 reverse

Related Models

John Deere 644D

Model:644D

John Deere 544C

Model:544C

John Deere 644B

Model:644B