JD 770 Engine Technical Data
Engine Model – Yanmar 3TN82-RJX
Engine Type – Direct injection, 3-cylinder liquid cooled diesel
Number of Cylinders – 3
Displacement, cu in (L) – 83,1 (1,4)
Engine Bore, in (mm) – 3,23 (82,0)
Engine Stroke, in (mm) – 3,39 (86,0)
Aspiration – Natural
Rated Engine Power, hp (kW) – 18,0 (24,0)
Maximum Engine Power, hp (kW) – 24,6 (33,0)
Rated Engine Speed, rpm – 2600
Idle Speed, rpm – 800-2800
Compression – 18.1:1
Firing Order – 1-3-2
Combustion System – Direct Injection
Fuel Tank Capacity, gal (L) – 6,3 (23,8)
Oil Capacity, qts (L) – 4,2 (4,0)
Coolant Capacity, qts (L) – 5,1 (4,8)
Electrical System Rating, Volts – 12
Alternator Rating, Amps – 35/40
Starter Rating, kW – 1,4/2,0
John Deere 770 Power Take-Off
Rear PTO Operational Type – Transmission / Live (opt)
PTO Horsepower, hp (kW) – 20,0 (14,9)
Rear PTO Speeds, rpm – 540
Mid-PTO – Optional
Mid-PTO Speeds, rpm – 2100
John Deere 770 Transmission
Transmission Type – 8F/2R Unsynchronized sliding gear
Number of Forward Speeds – 8
Number of Reverse Speeds – 2
Clutch – Dry type
Maximum Speed (Forward), mph (kph) – 10,8 (17,4)
Transmission Oil Capacity, qts (L) – 16,0 (15,1)
Brakes – Dry shoe
John Deere 770 Wheels and Tires
Drive Wheels – 2WD/4WD
Steering Configuration – Front steer
Steering System – Manual Steering
Front Tire Size (2WD) – 6.50-10
Rear Tire Size (2WD) – 9.5-24
Front Tire Size (4WD) – 6.00-12
Rear Tire Size (4WD) – 12.4-16
Hydraulic System and Hitch
Hydraulic System Type – Open center
Total Pump Flow, gpm (Lpm) – 5,6 (21,2)
Hydraulic Pressure, Bar (psi) – 141 (2050)
Hydraulic System Capacity, gal (L) – 4,0 (15,1)
3-Point Hitch Category – 1
Standard Lift Capacity at lift pin, lb (kg) – 815 (370)
JD 770 Dimensions and Weight
Wheelbase, in (mm) – 61 (1540)
Length, in (mm) – 87,8 (2230)
Height (Hood), in (mm) – 48,1 (1220)
Height (ROPS), in (mm) – 79 (2000)
Overall Width, in (mm) – 53,8 (1360)
Ground Clearance, in (mm) – 12 (300)
Front Tread, in (mm) – 37,5 (950)
Rear Tread, in (mm) – 40 (1010)
Weight (2WD), lb (kg) – 1930 (875)
Weight (4WD), lb (kg) – 2105 (955)
John Deere 770 Attachments
60-in Mower Deck
Mower Deck Type – Mid-mount
Number of Blades – 3
Cutting width, in (mm) – 60 (1520)
Belt – Shaft-drive
Overall width, in (mm) – 72,5 (1840)
Cutting height, in (mm) – 1,0-8,75 inch (20-220)
Lifting – Hydraulic
Front End Loader
Loader Model – John Deere 70
Height (to pin), in (mm) – 77,3 (1960)
Clearance, dumped bucket, in (mm) – 62 (1570)
Dump reach, in (mm) – 27 (680)
Dump angle, degrees – 45
Clearance, level bucket, in (mm) – 73.8 (1870)
Reach at ground, in (mm) – 49,8 (1260)
Rollback angle, degrees – 22
Breakout force (lift), lb (kg) – 1300 (589)
Breakout force (bucket), lb (kg) – 1570 (712)
Lift to full height (at pin), lb (kg) – 700 (317)
Bucket width, in (mm) – 48 (1210)
Bucket width, in (mm) – 54 (1370)
Bucket width, in (mm) – 60 (1520)
Backhoe
Backhoe Model – John Deere 7
2-Foot flat digging depth, in (mm) – 90 (2280)
Reach from pivot, in (mm) – 114 (2890)
Loading height, in (mm) – 70 (1770)
Bucket force, lb (kg) – 1945 (882)
Dipperstick force, lb (kg) – 1095 (496)
Weight, lb (kg) – 787 (356)