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• Manufacturer:
  Astec Underground
• Model:
  RT960

DIMENSIONS
Overall height – prime mover (to top of muffler): 115.7" (2.93 m)
Overall length – prime mover: 128.3" (3.28 m)
Overall transport length with backhoe and trencher with 4 (1.22 m) boom: 275.0" (6.98 m)
Angle of approach – prime mover: 58°
Angle of departure – prime mover: 60°
Minimum ground clearance – (axle to ground): 12.4" (315 mm)
Minimum ground clearance with backfill blade: 11.2" (284 mm)
Wheelbase: 76.8" (1.95 m)
Height to centerline of trencher headshaft: 29.8" (756 mm)
Angle of departure with trencher attachment: 34°
Trencher boom angle down from horizontal: 65°
Trencher boom angle up from horizontal: 50°
Backhoe transport height: 117.2" (2.97 m)
Backfill blade height: 16.1" (410 mm)
Backfill blade lift height: 19.1" (484 mm)
Backfill blade depth of cut below grade: 3.1" (78 mm)
Transport height, plow frame base tractor: 91.5" (2.32 m)
Center of rear wheel to rear of plow with chute in ground: 114.1" (2.90 m)
Plow swing angle: 25°
Plow offset from centerline: 32" (813 mm)
Angle of departure base tractor/plow attachment raised:
-with 30" (762 mm) mounted blade: 26°
-without mounted blade: 30°
Plow blade tip ground clearance base tractor with 30" (762 mm) mounted blade: 28.4" (721 mm)
Overall width base tractor: 85.8" (2.18 m)
Overall width with optional tires: 85.8" (2.18 m)
Tread width (centerlines) base tractor: 68.1" (1.73 m)
Turning radius (outside) base tractor 4-wheel steer:
-Left: 129" (3.27 m)
-Right: 129" (3.27 m)
Operating weight: 12,700 lbs (5,760 kg)*

*Operating weight of RT960 — Equipped with rear trencher, 4' (1.22 m) 110K rock boom, 110K chain and standard teeth, backfill

ENGINE
Model: 4T390 Cummins
Type: 4-stroke, turbocharged
Cylinders: 4
Bore/Stroke: 4.02" x 4.72" (102 x 120 mm)
Displacement: 239 in3 (3.9 L)
Fuel injection: Direct
Fuel: Diesel
Fuel filter: In-line strainer and spin-on cartridge
Air intake: Cross-flow
Cooling: Liquid
Horsepower:
-Gross: 99 (74 kW) @ 2200 rpm
-Net: 91 (68 kW) @ 2200 rpm
Maximum torque:
-Gross: 298 lb·ft (404 N·m) @ 1500 rpm

ENGINE COOLING
Radiator
Core size area: 415 in2 (.268 m2)
Rows of tubes: 5
Fan with standard transmission
Style: 7 blade suction
Diameter: 20.4" (518 mm)
Ratio: 1.1:1
Water pump Style: Integral
Engine oil
Pump: Deep sump plate cooler with pressurized nozzles under-piston
Pump operating angle ratings
Side-to-side: Rated 45°
Fore and aft: Rated 45°
Oil filtration: Replaceable, full-flow cartridge

POWERTRAIN
Transmission: 4-speed Hydra-shift with constant gear mesh
Drive: Hydrostatic 4WD variable displacement axial-piston pump 0 – 46.5 gpm (0-176 L/min)
U-joints: Constant velocity
Axle ratio: 19.2:1
Planetaries: 6:1 – Outboard
Differentials: Electrically actuated
Steering: 2W, 4W and crab
Axle oscillation: 20°
Service brakes: Hydrostatic
Parking brake: Internal, SAHR multi-disc
Travel speeds -
-1st: 1.4 mph (2.2 km/h)
-2nd: 2.9 mph (4.7 km/h)
-3rd: 5.0 mph (8.1 km/h)
-4th: 10.5 mph (16.8 km/h)
(Rated speeds are in forward and reverse)

TIRES
38 x 18.00-20, 10 PR
38 x 18.00-20, 12 PR (heavy-duty)

SERVICE CAPACITIES
Fuel tank: 25 gal (95 L)
Cooling system: 18.2 qt (17.2 L)
Engine with oil filter: 11.6 qt (11 L)
Hydraulic reservoir: 20 gal (75.7 L)
Total hydraulic: 22 gal (83.3 L)
Transmission: 9 qt (8.5 L)
Axle center (each): 9.5 qt (9 L)
Planetaries (each): 1.1 qt (1 L)
Trencher planetary drive: 1.5 qt (1.4 L)
Hydra-Borer System: 1.0 qt (0.9 L)

HYDRAULICS
Ground drive pump: 46.5 gpm (176 L/min)
Attachment drive pump: 46.5 gpm (176 L/min)
Steering pump: 7.1 gpm (27 L/min)
Accessory pump: 11.4 gpm (43.3 L/min)
Filtration: Full-flow spin-on cartridges
Accessory return: 2 micron
Charge pump flow (2): 2 micron

NOTE: Pump capacity rated @ 2385 engine rpm.

ELECTRICAL SYSTEM
Voltage: 12 volts, negative ground
Alternator: 65 amp
Starter: 3.35 hp (2.5 kW)
Battery: 685 CCA@ 0°F (-17.7° C)

OPERATOR / ENVIRONMENT
ROPS
Left and right entry/exit
Unobstructed operator platform
Swivel seat w/seat belt
Key start
Hand and foot controls
Iso-mounted platform

INSTRUMENTATION
Engine coolant temperature gauge
Hydraulic oil temperature gauge
Fuel level indicator
Voltage meter
Engine oil pressure indicator
Tachometer/hourmeter
Hydraulic charge filter indicator
Hydraulic filter indicator
Air filter restriction indicator
Neutral indicator
Alternator light