Grove Crane RT760 User Manual

RT760

2

Dimensions

25'

(7620)

23'

(7010)

A

OAW

10' 11"

(3327)

TAILSWING

14' 1-1/2" (4305)

22' 11"

(6985)

1' 3-1/2"

(394)

1' 9"

(533)

1' 9"

(533)

11°

9°

1' 1/2"

(343)

1' 10-1/4"

(565)

C

44' 9" (13 639) 4 Sec. Boom

43' 5" (13 233) 3 Sec. Boom

5' 9"

(1753)

B

C ROTATION

L

11' 8"

(3556)

25' 9-5/8"

(7864)

11' 3"

(3429)

17' 1" (5079) 3 Sec.
18' 5" (5613) 4 Sec.

12' 6"

(3810)

A (TRACK)

C

GROUND 

CLEARANCE

29.5 x 25
8' 2-1/2"

(2502)

12' 5"

(3785)

12' 9"

(3886)

1' 6-1/2"

(470)

TIRE SIZE

B (OAH)

Note: ( ) Dimensions are in mm.

Turning Radius. . . . . . . . . . . .

Front Axle Load . . . . . . . . . . . 45,805 lbs. (20 777 kg)

Rear Axle Load. . . . . . . . . . . . 45,080 lbs. (20 448 kg)

Gross Vehicle Weight . . . . . . . 90,885 lbs. (41 225 kg)

23' 4” (7100 mm)

110

85

75

65

55

45
40

35

50110 100 90 80 70 60 40 30 20 10120

130

180

170

160

150

140

130

120

110

100

90

80

70

60

50

40

30

20

10

0

30°

15°

0°

56

44

32

76° MAX.

BOOM

ANGLE

FEET

FEET

AXIS OF ROTATION

-4°

0°

10°

20°

30°

40°

50°

60°

70°

9'-7"3'-6" 5'-3"

DIMENSIONS ARE FOR LARGEST
GROVE FURNISHED HOOK BLOCK AND
HEADACHE BALL, WITH ANTI-TWO 
BLOCK ACTIVATED.

35 - 110 ft.

(10.7 - 33.5 m)

32 - 56 ft.

(9.8 - 17.1 m)

13,900 lbs.

(6305 kg)

°360

Working range

3

RT760

Superstructure specifications

Boom

35 ft.- 110 ft. (10.7 m - 33.5 m) four-section boom
consisting of a base section,two full power sections and
one power pinned section.
Maximum tip height:117 ft. (35.7 m).

*Optional Boom

34 ft.- 84 ft. (10.4 m - 25.6 m) three-section full power
boom.
Maximum tip height:92 ft. (28 m).

Lattice Extension (4 section boom)

32 ft.(9.8 m) lattice swingaway extension.Offsettable at
0°,15° or 30°. Stows alongside base boom section.
Maximum tip height:147 ft. (44.8 m).

*Optional Lattice Extension
(4 section boom)

32 ft.- 56 ft. (9.8 m - 17.1 m) telescoping lattice
swingaway extension offsettable at 0°, 15° or 30°.
Stows alongside base boom section.
Maximum tip height: 170 ft.(51.8 m).

Lattice Extension (3 section boom)

32 ft.(9.8 m) fixed lattice swingaway extension.
Stows alongside base boom section.
Maximum tip height:122 ft. (37.2 m).

Swing

Ball bearing swing circle with 360° continuous
rotation.Planetary glide swing with foot applied
multi-disc brake.Spring applied, hydraulically released
parking brake,plunger type one position and 360°
mechanical house lock,operated from cab.
Maximum speed:2.6 RPM.

Counterweight

Integral with turntable mast.

With main hoist only: 13,900 lbs.(6305 kg)
With main & aux.: 12,150 lbs.(5511 kg)

Hydraulic System

Four main pumps with a combined capacity of
146 GPM (553 LPM).
Maximum operating pressure:2500 PSI (172.4 bar).

Four individual valve banks.
Return line type filter with full f low by-pass protection

and service indicator.Replaceable cartridge with micron
filtration rating of 15/30/38.

154 gallon (583 L) reservoir.Remote mounted oil cooler
with thermostatically controlled electric motor driven
fan/air to oil.

Boom Nose

Five steel sheaves mounted on heavy duty tapered roller
bearings with removable pin-type rope guards.
*Optional auxiliary boom nose.

Boom Elevation

Two double acting hydraulic cylinders with integral
holding valves provide elevation from -4° to 76°.

Load Moment
& Anti-Two Block System

Standard load moment and anti-two block system with
audio-visual warning and control lever lockout. These
systems provide electronic display of boom angle,
length,radius,tip height, relative load moment,
maximum permissible load and load indication and
warning of impending two-block condition.

Cab

Full vision,all steel fabricated with acoustical lining and
tinted safety glass throughout.Complete driving
controls and engine instrumentation.Dash mounted
control levers for craning functions. Other standard
features include:hinged skylight,sliding left side door
and sliding right side window,electric windshield
wash-wipe,propane heater,circulating air fan,fire
extinguisher,seat belt and two front mounted
worklights.

System pressure test panel with quick release type
fittings for each circuit.

Hoist Specifications
Main and Auxiliary Hoist

Planetary reduction with automatic spr ing applied
multi-disc brake.Electronic hoist drum rotation
indicator,hoist drum cable followers and wire rope.

High Low

Maximum Single 9,280 lbs. 18,560 lbs.
Line Pull: (4209 kg) (8419 kg)

Maximum Single 532 FPM 266 FPM
Line Speed: (162 m/min) (81 m/min)

Maximum Permissible 12,920 lbs. 12,920 lbs.
Line Pull: (5860 kg) (5860 kg)

Rope Diameter: 3/4" 3/4"

(19 mm) (19 mm)

Rope Length: 550 ft. 500 ft.

(168 m) (152 m)

Main Auxiliary
Maximum Rope 1,170 ft. 690 ft.
Stowage: (357 m) (210 m)

*Denotes optional equipment

4

RT760

Carrier specifications

Chassis

Box section chassis fabricated from high-strength, low
alloy steel. Integral outrigger housings and front/rear
towing and tie down lugs.

Outrigger System

Four hydraulic telescoping single-stage,double box
beam outriggers with inverted jacks and integral
holding valves. Three position setting. All steel
fabricated,quick release type outrigger floats,24"
(610 mm) diameter.
Maximum outrigger pad load:85,880 lbs. (39 036 kg).

Outrigger Controls

Controls and crane level indicator located in cab.

Engine

Cummins 6BTA 5.9L diesel,six cylinders,turbocharged,
200 bhp (149 kW) (Gross) @ 2,500 RPM.
Maximum torque:600 ft. lbs.(814 Nm) @ 1,500 RPM.

*Optional Engine

Caterpillar 3116TA diesel,six cylinders, naturally
aspirated,190 bhp (142 kW) (Gross) @ 2,600 RPM.
Maximum torque:490 ft. lbs.(664 Nm) @ 1,650 RPM.

Oscillation Lockouts

Automatic full hydraulic lockouts on rear axle permit
oscillation only with boom centered over the front.
*Oscillation lockout override control.

Brakes

Full air split circuit operating on all wheels.
Spring-applied,air released parking brake operating on
front and rear axles.

Tires

29.5 x 25 - 28PR earthmover type,tubeless
*29.5R25 Radial

Lights

Full lighting including turn indicators,head,tail, brake,
and hazard warning lights.

Maximum Speed

20.3 MPH (32.7 kph).

Gradeability (Theoretical)

128% (Based on 88,000 lbs.[39 917 kg] GVW)

29.5 x 25 tires,pumps disengaged,84 ft. (25.6 m) boom,
plus 32 ft.(9.8 m) swingaway.

Fuel Tank Capacity

60 gallons (227 L)

Transmission

Full powershift with 6 forward and 6 reverse speeds.
Rear axle disconnect for 4 x 2 travel.

Electrical System

Two 12-V - maintenance free batteries.
12-V starting.

Drive

4 x 4.

Steering

Fully independent power steering:
Front: Full hydraulic steering wheel controlled.
Rear: Full hydraulic hand lever controlled.
Provides infinite variations of 4 main steering modes:
front only,rear only,crab and coordinated.
Rear steer indicating gauge.

Axles

Front: Drive steer with differential and planetary

reduction hubs rigid mounted to chassis.

Rear: Drive/steer with differential and planetar y

reduction hubs pivot mounted to frame.
*Cross axle differential lock.

Miscellaneous Standard Equipment

Full width steel fenders,dual rear view mirrors,hook
block tiedown,electronic back-up alarm,front stowage
well,light package,air dryer,360° mechanical house
lock and low oil pressure,high water temperature A/V
warning system.

*Optional Equipment

*360° flashing beacon
*Cab spotlight
*Engine block heater
*Manual skylight wiper
*Hookblocks/headacheball
*Tow winch (front mounted max.single line pull 15,000

lbs.[6804 kg]; max. speed 92 FPM [28.0 m/min]).
*Spare wheel assembly
*Tire inflation kit
*Tool kit
*Pintle hook front/rear
*Diesel heater/defroster
*Hydraulic oil cab heater
*Air conditioning
*LMI light bar

*Denotes optional equipment

5RT760

35 - 110 ft.

(10.7 - 33.5 m)

13,900 lbs.

(6305 kg)

360°

85% Domestic (Pounds)

100%

Power Pinned Fly Retracted

(Feet)

Power Pin.

Fly Ext.

& 85 ft.

35 40 45 55 65 75 85 110

10

120,000

(65)

90,000

(68)

82,000

(71)

80,250

(75)

12

99,000

(61)

90,000

(65)

82,000

(68)

75,000

(73)

67,000

(76)

15

83,500

(55.5)

83,500

(60)

82,000

(64)

68,000

(69.5)

59,000

(73)

20

64,350

(44.5)

64,350

(51)

64,300

(56.5)

55,750

(63.5)

49,000

(68.5)

43,000

(72)

39,350

(74.5)

25

49,450

(31)

49,450

(41)

49,450

(48.5)

47,900

(57.5)

40,400

(63.5)

35,550

(68)

33,000

(71)

27,100

(76)

30

39,600

(28)

39,600

(39)

39,600

(51)

34,350

(58.5)

31,000

(63.5)

27,800

(67.5)

23,450

(74)

35

32,400

(26.5)

32,400

(44)

29,750

(53)

26,550

(59)

23,900

(63.5)

20,600

(71)

40

24,248

(35.5)

24,280

(47)

23,200

(54.5)

20,850

(60)

18,350

(68)

45

19,250

(24.5)

19,250

(40.5)

19,250

(49.5)

18,300

(55.5)

16,450

(65)

50

15,830

(32.5)

15,830

(44)

15,830

(51.5)

14,750

(62)

55

13,330

(22.5)

13,330

(38)

13,330

(46.5)

13,250

(59)

60

11,450

(31)

11,450

(41.5)

11,950

(56)

65

9,760
(21.5)

9,760

(36)

10,800

(52.5)

70

8,150
(29.5)

9,730

(49)

75

6,620
(20.5)

8,450
(45.5)

80

7,460
(41.5)

85

6,530

(37)

90

5,620

(32)

95

4,750
(26.5)

100

3,940
(18.5)

Minimum boom angle (deg.) for indicated length (no load) 0 0

Maximum boom length (ft.) at 0 deg. boom angle (no load) 85 110
Note: ( ) Boom angles are in degrees.

A6-829-008610 & -004949C

A6-829-009455

Boom
Angle

35 40 45 55 65 75 85 110

0°

24,550

(29.6)

20,550

(34.3)

17,200

(39.3)

12,350

(49.3)

9,030
(59.3)

6,580
(69.3)

4,720
(79.2)

2,930

(104)

Note: ( ) Reference radii in feet.

THIS CHART IS ONLY A GUIDE AND SHOULD NOT BE USED TO OPERATE THE CRANE. The individual crane's load chart, operating instructions and other instructional plates must be read and understood prior to operating the crane.

6

RT760