John Deere 772A User's Manual
Contents
1. JOHN DEERE ENGINE PERFORMANCE NET POWER 1000 1400 1800 2200 ENGINE SPEED RPM FEATURES 150 SAE net hp 112 kW 12 ft 3 65 m moldboard with 0 62 x 6 in 16 x 152 mm through hardened Dura Max cutting Com 13 and 14 ft 3 95 and 4 25 m moldboards and 2 ft 610 mm extensions available Power Shift transmission 8 speeds forward 4 reverse Articulated frame steering Differential lock unlock All wheel drive standard system to 6 7 mph 10 8 km h optional system to 11 5 mph 18 5 km h switch controlled for two modes of operation 22 ft 6 in 6 86 m turning radius All hydraulic control of blade and machine functions Closed center hydraulic system with operational no leak drift free poppet valves Pushbutton control Hydraulically controlled 7 position lift arms let you position blade for 90 degree bank cuts left or right in approximately one minute without leaving the seat Oscillating front axle and rear tandem Hydraulic front wheel lean Rollover protective structure ROPS w cab Model shown may include options ADD VERSATILITY WITH Scarifier Rear mounted ripper Snow plow and wings Bulldozer Automatic blade control 772A MOTOR GRADER SPECIFICATIONS Specifications and design subject to change without notice Wherever applicable specifications are in accordance with SAE Standards Except where otherwise noted these specifications are based on a unit with2. Minimum vertical section 118 in 135 cm Tires 13 00 24 12 PR G2 standard 14 00 24 12 PR G2 17 5 25 12 PR L2 Dimensions The Wheel Tread Width T Ground Ciearance Size Front Rear Front Rear Front Axle 130024 76 15in 7961 m 7095m 71 101 22 in 8 rim 1 93 m 202m 237m 2 34 m 659 mm 203 mm 14 00 24 76 15in 79 61 in 7H 115m CH 225 in 40 rim 1 83 m 202m 243m 2 44m 672 mm 254 mm 17525 78401m 8237in BM in EN Sin 232 im 14 rim 1 99m 209m 257m 259m 689 mm 356 mm Height to top of steering wheel 7 ft 6 in 2 29 m Capacities US Liters Fuel tank 70 gal 265 0 Cooling system 7 gal 26 5 Engine lubrication including filter lt lt lt lt 20 qt 18 9 Transmission and hydraulic system 41 gal 155 2 Tandem housings eac 5 gal 18 9 Worm gearbox a 4qt 3 8 V type for 4 ft 1 22 m cut with 3 manual pitch positions Number of teeth 5 standard 9 optional Lift above ground 24 0 in 610 mm Penetration 13 7 in 348 mm Shank size 3 in 25 x 76 mm Ripper Special Equipment 8 ft 2 44 m cut width parallelogram linkage 2 manual shank vertical postions Number of shank pockets Number of shanks 4 in 856 mm 51 x 127 mm agate 23 5 in 597 mm 772A MOTOR GRADER SPECIFICATIONS A
3. 254 mm for 14 00 24 tires 452 205 wifloat control 1618 734 14 in 356 mm for 17 50 25 tires 645 293 Bottom guard heavy duty Ripper rear mounted with hitch 2474 123 w rear hitch 459 208 ROPS canopy w seat belt and Bottom guard regular 160 73 instrument panel cover 447 203 Cold weather starting aid 3 1 Scarifier regular w five teeth Dura Max through hardened 1x3 in 25 x 76 mm 1115 506 cutting edge x 8 in 19 x 203 mm 8 5 Ib ft 13 kg m Scarifier float 9 4 Engine disconnect cold weather 30 14 Seat belt 3 in 76 mm 3 1 Engine side shields 60 27 Seat deluxe suspension cloth Fan defroster 4 2 covered 111 50 Front wheel drive in 1st through 6th gears Seat deluxe suspension vinyl 11 5 mph 19 km h covered 58 26 free wheeling in 7th and 8th Sound suppression package gears 6 cu in 98 cm includes bottom guard 542 246 variable displacement pump 34 15 Sound suppression package Heater cab 19 000 BTU 5 6 kW 16 LG for use w ripper 295 134 Heater cab 38 000 BTU 11 1 kW 31 14 Tires Heater cab 40 000 BTU 11 7 kW 31 14 14 00 24 12 PR G2 210 95 Heater coolant 1 0 5 17 5 25 12 PR L2 468 213 Heater roof mounted 25 000 BTU Toolbox 1 5 7 3 kW add to air conditioner 17 8 Winter door cam for cab 4 2 Hydraulic pump pressure controlled Wiper rear windshield 4 2 variable displacement 6 0 cu in 98 cm3 52 4 gpm 3 3 L s 50 23 Lights blade 4 2 Lights work 2 front 2 rear floods 12 5 Mat floor 9 4 Mirror
4. outside rear view convex outside 6 3 Mirror outside rear view convex both sides 12 5 Mirror outside rear view flat one side 6 3 Mirror outside rear view flat both sides 12 5 Moldboards 12 ft 3 66 m wPh x 8 in 19 x 203 mm through hardened Dura Max cutting edge 106 48 13 ft 3 96 m w b x 6 in 16 x 152 mm through hardened Dura Max cutting edge 60 27 13 ft 3 96 m wie x 8 in 19 x 203 mm through hardened Dura Max cutting edge 116 53 14 ft 4 27 m wih x 6 in 16 x 152 mm through hardened Dura Max cutting edge 146 66 14 ft 4 27 m wi x 8 in 19 x 203 mm through hardened Dura Max cutting edge 155 70 ni 772A MOTOR GRADER DIMENSIONS 10 ft 6 in 3 20 m 32 ft 6 in 9 90 m
5. 13 00 24 12 PR tubeless tires on 8 in 254 mm rims 12 ft 3 65 m moldboard with 6 in 152 mm cutting edge and standard equipment Weights include lubricants coolants full fuel tank and 175 Ib 79 kg operator Rated Power 2300 rpm SAE DIN 70 020 Net 150 hp 112kW 112kW Gross 160 hp 119 kW Net engine power is with standard equipment including air cleaner exhaust system alter nator and cooling fan at standard conditions per SAE J1349 and DIN 70 020 using No 2 D fuel 35 API gravity No derating is required up to 10 000 ft 3050 m altitude Gross Power is without cooling fan Engine John Deere 6 466A Type 4 stroke cycle tumbocharged and intercooled diesel Bore and stroke 4 56 x 4 75 in 116 x 121 zen No of cylinders Displacement Compression ratio Maximum net torque 1200 rpm Lubrication Cooling fan Aspirated air Electrical system Batteries two 12 v Transmission Direct drive full power shift with planetary gear reductions Foot inching pedal Travel Speeds 2200 engine rpm no tire slip 14 00 24 tires 465 Ib ft 630 Nm 64 ig Pressure system woe ilter Shift Lever Position Forward Reverse mph km h h km h 1 3 37 0 48 2 3 3 5 3 42 68 3 5 2 89 66 10 6 4 67 10 8 8 6 13 9 5 8 8 14 2 6 115 18 5 7 14 6 23 6 8 25 1 40 4 Differential Lock Foot operated hydraulically actuated A Inboard planetary final driv
6. dditional Standard Equipment On Front On Rear Gauges Horn SAE Operating Weight Wheels Wheels Total Air filter indicator Hourmeter Standard equipment 9237 lb 21 666 lb 30 908 Ib Engine oil pressure Lights stop and tail 4190 kg 9827 kg 14 017 kg Front wheel drive return filter Lights driving Standard equipment 10 548 Ib 21 470lb 32 018 Ib indicator Precleaner and scarifier 4784 kg 9739 Kg 14523 kg Front wheel drive charge Reverse warning alarm Standard equipment 9780 Ib 24 712 lb 34 492 Ib pressure ROPS cab wiseat belt front wiper scarifier and ripper 4436 kg 11209 kg 15645 kg Fuel level and dome light Hydraulic function return filter Seat cushioned vinyl indicator Tum signals Transmission clutch pressure Transmission filter indicator Transmission lube pressure Transmission temperature Water temperature Optional or Special Equipment with Weights Add these weights to SAE Standard Equipment operating weights to obtain total operating weights lb kg Ib kg Accelerator decelerator 7 3 Moldboard extensions 2 ft 610 mm Air conditioner w heavy duty right or left less cutting edge 220 100 alternator 187 85 Moldboard float 14 6 Automatic blade control 350 159 Overlay end bits 1 pair 6 in 152 mm 62 28 Articulation indicator 6 3 Overlay end bits 1 pair 8 in 203 mm 77 35 Batteries heavy duty Rear hitch 61 28 w 620 minute reserve capacity 101 46 Rims Blade front bulldozer 10 in
7. es with heat treated splined steel torque shafts Oscillating welded con struction tandems nodular cast sprockets driving 2 in 51 mm pitch roller chain in oil bath Front Drive Standard and optional systems are available to match different applications Both use a variable displacement pump a reversible motor in each wheel and a flow divider to assure front wheel traction System has two operational modes and free wheels at transport speeds or when not in use Standard system effective in gears 1 4 5 03 in 89 cm pump 2 03 in 33 cm motors High speed system effective in gears 1 6 nn in 98 cm pump 2 03 in 33 cm motors Front Axle Fabricated steel box frame with planetary drives Total oscillation 30 deg Wheel lean either direction 120 deg Steering POE 5 pis ties ern Full hydraulic power system Steering capabilities without engine power or ade Hydraulically articulated frame steering 25 deg left or right Minimum turning radius gt 0 2 0 cece 22 ft 6 in 6 86 m Brakes SAND une ee Foot operated hydraulically actuated wet disk effective on 4 tandem wheels Falling rss Foot operated mechanical dry disk effective on 4 tandem wheels Hydraulic System Closed center w pressure controlled 4 0 cu in 65 cm variable dis placement pump 36 gpm 2 27 Us 2200 engine rpm Moldboard Wear resistant oh zetbon steel Length 2 ft 3 66 m Height ay
8. in 610 mm Thickness 0 88 in 22 mm Cutting Edge Dura Max through hardened curved steel Thickness and width 0 62 x 6 in 16 x 152 mm Blade Range above Ground dra 17 in 432 mm Blade side shift Right oniettiy mart J 26 9 in 683 mm Shoulder reach outside wheels frame straight Right a Pitch at ground line 44 deg forward 10 deg back Blade Lift Mechanism Control Dual lever hydraulic Lift Arms Nodular cast iron Positions Control Hydraulic foot N Circle Fabricated steel angle construction Circle diameter 60 in 1 5 m Rotation 360 deg Drive Hydraulic motor and worm gear w positive position lock Sideshift right 32 0 in 813 mm left 33 5 in 851 mm Drawbar Welded box section 3 5 x 7 x 0 5 in 89 x 178 x 13 mm wall w ball and socket draft connection Frame Rear mainframe soroaren Welded box section from articulation joint to mainframe arch Width minimum 03 in 306 mm Height minimum 11 95 in 304 mm Thickness ae 0 47 in 12 mm top and bottom min 0 87 in 22 mm Weight per tt minimum 120 lb 178 kg m Minimum vertical section modulus in 6943 cm Front mainframe seseseeeees Welded box section from mainframe arch to front hood Width Height minimum 13 in 330 mm Thickness minimum 0 63 in 16 mm Weight per ft minimum 110 Ib 164 kg m
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