The John Deere 770A is a motor grader used for road construction, grading, ditching, and surface finishing. Designed for municipal, highway, and site preparation work, it features a moldboard blade mounted between the front and rear axles for precise material control. The 770A is part of John Deere's grader lineup and is typically equipped with a diesel engine, articulated frame, and hydraulic blade controls. It is used to shape and maintain gravel roads, prepare subgrades, and perform fine grading tasks. The model is recognized in the used equipment market for its serviceability, parts support, and utility in general earthmoving applications.
Circle
John Deere 770A Motor Grader Circle specifications
Blade Tip Angle - Front
44 degrees
Blade Tip Angle - Rear
10 degrees
Diameter
59.10 in (150.11 cm)
Max Lift Above Ground
17.10 in (43.43 cm)
Max Reach Outside Tires - Left
89.80 in (228.09 cm)
Max Reach Outside Tires - Right
88.60 in (225.04 cm)
Rotation
360 degrees
Shift Left
33.60 in (85.34 cm)
Shift Right
32.10 in (81.53 cm)
Dimensions
John Deere 770A Motor Grader Dimensions specifications
Blade Base
9.00 ft (2.74 m)
Front Ground Clearance
1.90 ft (0.58 m)
Height to Top of Isomount Cab
10.50 ft (3.20 m)
Overall Length
27.80 ft (8.47 m)
Tandem Axle Wheelbase
5.10 ft (1.55 m)
Wheelbase
19.60 ft (5.97 m)
Width Over Tires
8.10 ft (2.47 m)
Engine
John Deere 770A Motor Grader Engine specifications
Aspiration
Turbocharged with Intercooler
Displacement
466.00 cu in (7,636.39 cu cm)
Engine Model
6-466A
Max Power
150.00 hp (111.86 kw)
Net Power Gears 7-8
150.00 hp (111.86 kw)
Net Torque Gears 7-8
465.00 lbs ft (630.45 nm)
Number of Cylinders
6
Power Measured @
2200 rpm
Torque Measured @
1300 rpm
Front Axle
John Deere 770A Motor Grader Front Axle specifications
Ground Clearance
1.90 ft (0.58 m)
Oscillation - Total
30 degrees
Wheel Lean
20 degrees
Hydraulic System
John Deere 770A Motor Grader Hydraulic System specifications
Pump Flow
36.00 gpm (136.26 lpm)
Pump Type
Closed Center Variable Displacement
Moldboard
John Deere 770A Motor Grader Moldboard specifications
Moldboard Height
24.00 in (60.96 cm)
Moldboard Thickness
0.90 in (2.29 cm)
Moldboard Width
12.00 ft (3.66 m)
Side Shift Left
26.90 in (68.33 cm)
Side Shift Right
26.90 in (68.33 cm)
Operating Specifications
John Deere 770A Motor Grader Operating Specifications specifications
Alternator Supplied Amperage
42 amps
Circle Gearbox Fluid Capacity
1.10 gal (4.16 l)
Cooling System Fluid Capacity
7.10 gal (26.87 l)
Fuel Capacity
70.00 gal (264.95 l)
Hydraulic System Fluid Capacity
31.00 gal (117.34 l)
Max Operation Weight - Front Axle
9,091.00 lbs (4,123.61 kg)
Max Operation Weight - Rear Axle
24,758.00 lbs (11,230.05 kg)
Max Operation Weight - Total
33,849.00 lbs (15,353.67 kg)
Oil System Fluid Capacity
5.00 gal (18.93 l)
Operating Voltage
24 volts
Std Operation Weight - Front Axle
8,548.00 lbs (3,877.31 kg)
Std Operation Weight - Rear Axle
21,712.00 lbs (9,848.41 kg)
Std Operation Weight - Total
30,260.00 lbs (13,725.72 kg)
Tandem Case Fluid Capacity (each)
5.00 gal (18.93 l)
Tire Size
14.00-25
Steering System
John Deere 770A Motor Grader Steering System specifications
Articulation Angle
25 degrees
Turning Radius
22.00 ft (6.71 m)
Transmission
John Deere 770A Motor Grader Transmission specifications
Max Speed - Forward
25.10 mph (40.39 kph)
Max Speed - Reverse
8.60 mph (13.84 kph)
Number of Gears - Forward
8
Number of Gears - Reverse
4
Transmission Type
Power Shift
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