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Cat TH103 Specifications

Basic Information

The Caterpillar TH103 telehandler is a heavy-duty, high-capacity material-handling machine engineered for industrial, construction, agricultural, and logistical operations that demand excellent lifting capability, long forward reach, and reliable off-road performance. Designed around Caterpillar’s established mechanical architecture, the TH103 provides a powerful combination of strength, stability, and operator control.

With a rated lifting capacity of 4535 kg (10,000 lb), a maximum lift height of 13.4 m (44 ft), and a maximum forward reach of 8.7 m (28 ft 9 in), the machine is intended for large-scale material placement and elevated handling tasks that exceed the reach of compact models.

The machine incorporates a synchronized three-section boom, electronically modulated controls, heavy steel frame, hydraulic work tool coupler, and load-holding hydraulics that ensure safe operation even at extreme boom angles.

Its turbocharged diesel engine delivers high torque at low speeds, supporting strong tractive performance and responsive hydraulic operation. The TH103 is particularly valued for its durability, straightforward service access, and the versatility provided by Caterpillar’s extensive range of compatible work tools.

Engine Specs

The Caterpillar TH103 is powered by the Cat 3054T engine, a turbocharged, water-cooled, four-stroke, four-cylinder diesel engine engineered for heavy industrial applications.

Engine model: Cat 3054T
Gross power: 78 kW (105 hp) @ 2200 rpm
Net power (SAE J1349): 75 kW (101 hp) @ 2200 rpm
Maximum torque: 365 Nm (269 lb-ft) @ 1600 rpm
Bore: 100 mm (3.94 in)
Stroke: 127 mm (5 in)
Displacement: 4.0 L (243 cu.in)
Aspiration: Turbocharged
Cooling: Liquid-cooled system with radiator and coolant pump
Fuel system: Mechanical fuel injection with fuel lift pump and filtration
Idle speed: approx. 800 rpm
Governor: Mechanical governing system for stable RPM under load

The Cat 3054T engine is designed for torque-rich output at midrange engine speeds, particularly beneficial when lifting heavy loads or extending the boom under power. The block and head are cast iron for durability. The design includes wet cylinder liners, a forged crankshaft, and pressure-fed lubrication for longevity in demanding job sites.

Lubrication System
Lubrication type: full-pressure wet-sump system with gear-driven oil pump
Oil capacity: approx. 8-9 L (8.4-9.5 qt)
Oil type: SAE 15W-40 diesel engine oil
Oil filtration: full-flow spin-on filter

Cooling System
Cooling type: forced-circulation liquid cooling
Coolant capacity: approx. 12-14 L (12.7-14.8 qt)
Radiator: heavy-duty industrial core
Cooling fan: mechanical engine-driven fan

Drive Train

The TH103 is equipped with a mechanical, full-time all-wheel-drive powertrain paired to a Caterpillar powershift transmission.

Transmission
Transmission type: powershift
Forward gears: 4
Reverse gears: 3
Direction selection: lever-controlled, column-mounted
Shift method: hydraulic clutch packs

Travel Speeds (approximate):
Forward 1: 6-8 km/h (4-5 mph)
Forward 2: 12 km/h (7 mph)
Forward 3: 20 km/h (13 mph)
Forward 4: 32-40 km/h (20-25 mph) depending on conditions
Reverse speeds: similar to corresponding forward gears

Axles
Axle type: outboard planetary drive axles
Front axle: fixed, with differential lock
Rear axle: oscillating, free-oscillation design for uneven terrain
Axle oscillation: approx. ±10 degrees
Axle lubrication: gear oil SAE 80W-90 or SAE 85W-140
Drive engagement: full-time mechanical four-wheel drive

Brakes
Service brakes: enclosed oil-immersed disc brakes on both axles
Parking brake: mechanically modulated, hand-operated parking brake acting on front axle discs
Brake assist: hydraulic power-assisted braking

Electrical System

System voltage: 12 V
Alternator: 55 amp
Battery: 12 V, 950 CCA, maintenance-free
Electrical protection: circuit breakers and fuse panel
Key features: backup alarm, anti-restart protection, engine cold-start aid

Wheels and Tires

Drive type: full-time 4WD mechanical
Frame: heavy-duty steel ladder frame with integrated lifting and tie-down points
Front axle: fixed
Rear axle: oscillating

Standard tires: 14.00-24, 16-ply construction tread
Optional tires: 17.5 R25 construction tread
Fenders: four close-fitting, axle-mounted for debris protection

Wheel rim size: industrial heavy-duty steel
Tire ply rating: high-strength 16-ply for construction terrain
Tire width: wide base for improved flotation and stability

Steering type: full hydraulic power steering
Steering modes: Two-wheel steer, Crab steer, Circle steer
Steering selection: console-mounted selector switch
Steering sensors: integrated for alignment verification
Turning radius: approx. 3.9 m (13 ft)

Hydraulic System

Hydraulic pump type: load-sensing, variable-displacement axial piston pump
Maximum system pressure: 250 bar (3625 psi)
Maximum pump flow: 142 L/min (38 gpm)
Auxiliary hydraulic flow: 71 L/min (18.8 gpm)
Auxiliary hydraulic pressure: 124 bar (1800 psi)

Boom control: single lever pilot-operated joystick with smooth modulation
Boom sections: 3-section synchronized telescopic boom
Wear pads: non-metallic, adjustable
Hydraulic safety: lock valves on all load-holding cylinders

Hydraulic Cycle Times
Boom raise: 16 seconds
Boom lower: 13 seconds
Tele extend: 12 seconds
Tele retract: 12 seconds

Service Refill Capacities

Fuel tank: 155 L (41 gal)
Hydraulic tank: 155 L (41 gal)
Engine oil: approx. 8-9 L (8.4-9.5 qt)
Cooling system: approx. 12-14 L (12.7-14.8 qt)
Transmission system: approx. 10-12 L (10.5-12.7 qt)
Axle oil: approx. 7-8 L (7.4-8.4 qt) per axle

Performance Data

Rated load capacity: 4535 kg (10,000 lb)
Maximum lift height: 13.4 m (44 ft)
Capacity at maximum lift height (stabilizers down): 4535 kg (10,000 lb)
Capacity at maximum lift height (stabilizers up): 3175 kg (7000 lb)
Maximum forward reach: 8.7 m (28 ft 9 in)
Capacity at maximum reach (stabilizers down): 1360 kg (3000 lb)
Capacity at maximum reach (stabilizers up): 1065 kg (2350 lb)
Boom angle range: approx. -3° to +75°
Coupler tilt range: 140° fore/aft hydraulic tilt maintained automatically

Dimensions and Weight

Overall height: approx. 2.44 m (96 in)
Overall width: 2.44 m (96 in)
Overall length to fork face: 6.45 m (254 in)
Ground clearance: 495 mm (19.5 in)
Track width: 2675 mm (105 in)
Cab width: approx. 900 mm (35.4 in)
Standard carriage: 48-in fixed carriage
Fork options: 1.22 m (48 in) pallet forks
Fork options: 1.52 m (60 in) forks (optional)
Free-lift height: dependent on carriage, generally 0.3-0.4 m (12-16 in)
Operating weight: 12,530 kg (27,623 lb)

Maintenance Data

500-hour service:
- Engine oil and filter
- Fuel filter
- Transmission oil inspection
- Hydraulic filter

1000-hour service:
- Change hydraulic/transmission filter
- Axle oil replacement
- Steering linkage inspection
- Brake system inspection

2000-hour service:
- Full hydraulic oil replacement
- Cooling system flush
- Boom structural inspection
- Wear pad adjustment and lubrication

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