Cat DP40K Specifications
The Caterpillar DP40K is a 4,000 kg capacity
diesel-powered forklift manufactured from 1996 to 2014, designed for heavy-duty
material handling applications. Powered by a Mitsubishi S6S diesel engine and
mated to a rugged Powershift transmission, this pneumatic tire model delivers
reliable performance for demanding indoor and outdoor operations. The unit
features a durable construction, hydraulic service brakes, and a range of mast
configurations to accommodate various lifting requirements. Known for its robust
engineering and serviceability, the DP40K represents Caterpillar's commitment to
producing heavy-duty material handling equipment capable of operating in
challenging environments while maintaining productivity and operator comfort.
Engine Model: Mitsubishi S6S
Engine Type: Four-cycle, water-cooled diesel
Number of Cylinders: 6
Displacement: 4,998 cc (305 cu.in)
Rated Output (ISO 1585): 60.3 kW (81 hp) at 2,450 rpm
Maximum Torque: 249 Nm (184 lb-ft) at 1,600 rpm
Rated Speed: 2,450 rpm
Torque Speed: 1,600 rpm
Aspiration: Naturally aspirated
Fuel System: Direct injection diesel
Lubrication Type: Forced circulation with gear pump
Oil Filter: Full-flow cartridge type
Recommended Oil Viscosity: SAE 10W-30 or 15W-40 diesel engine oil
Cooling Type: Water-cooled, forced circulation
Water Pump: Centrifugal type with belt drive
Radiator: Corrugated fin type with pressure cap
Thermostat: Wax pellet type
Cooling Fan: Suction type
Recommended Coolant: Ethylene glycol based antifreeze mixture
Transmission Type: Powershift
Number of Speeds: 1 forward / 1 reverse
Torque Converter: Single-stage, single-phase
Control: Hydraulic with column-mounted shift lever
Drive Control Type: Powershift with hydraulic modulation
Travel Speed (with load): 17.5 km/h (10.9 mph)
Travel Speed (without load): 19.5 km/h (12.1 mph)
Drive Axle (Front): Full-floating, banjo type with planetary wheel ends
Steer Axle (Rear): Mounted with trunnion-type articulation
Service Brake Type: Hydraulic
Parking Brake: Hand-operated, mechanical
System Voltage: 12 V
Battery: Lead-acid
Alternator: High-output
Starter Motor: High-torque
Lighting: Integrated headlights and taillights
Frame Construction: Welded steel plate
Drive Configuration: 4x2 (front wheel drive)
Counterweight: Integrated into chassis design
Front Wheel Type: Disc wheel
Rear Wheel Type: Disc wheel
Number of Wheels: 2 front / 2 rear
Front Tire Size: 8.25 x 15-14 PR
Rear Tire Size: 7.00 x 12-14 PR
Tire Type: Pneumatic with tube
Steering Type: Full hydrostatic power steering
Steering Control: Hydraulic with steering wheel
Steering Pump: Gear type, engine driven
Steering Cylinder: Double-acting hydraulic
Hydraulic System Type: Open center
Hydraulic Pump Type: Gear pump
Maximum Operating Pressure (for attachments): 191 bar (2,770 psi)
Mast Type: Simplex (standard), Duplex, or Triplex
available
Mast Tilt Forward: 6°
Mast Tilt Backward: 10°
Height with Mast Lowered: 2,320 mm (91.3 in)
Height with Mast Raised: 4,570 mm (180 in)
Free Lift: 100 mm (3.9 in)
Lift Height: 3,300 mm (130 in)
Height to Top of Overhead Guard: 2,250 mm (88.6 in)
Fork Carriage to DIN 15 173: 3A
Fork Carriage Width: 1,190 mm (46.9 in)
Forks Available: Various lengths including 1,220 mm (48 in) and 1,520 mm (60 in)
Rated Load Capacity: 4,000 kg (8,818 lb)
Load Center Distance: 500 mm (19.7 in)
Lifting Speed (with load): 0.50 m/s (98.4 ft/min)
Lifting Speed (without load): 0.52 m/s (102.4 ft/min)
Lowering Speed (with load): 0.50 m/s (98.4 ft/min)
Lowering Speed (without load): 0.50 m/s (98.4 ft/min)
Drawbar Pull (with load): 19,400 N (4,361 lb)
Drawbar Pull (without load): 17,500 N (3,934 lb)
Gradeability (with load): 20.6%
Gradeability (without load): 27.1%
Maximum Climbing Ability: 27.1%
Overall Length: 4,290 mm (169 in)
Length to Fork Face: 3,070 mm (121 in)
Overall Width: 1,415 mm to 1,965 mm (55.7 in to 77.4 in) depending on tire
configuration
Height to Top of Overhead Guard: 2,250 mm (88.6 in)
Wheelbase: 2,000 mm (78.7 in)
Seat Height: 1,093 mm (43.0 in)
Tow Coupling Height: 420 mm (16.5 in)
Height with Mast Lowered: 2,320 mm (91.3 in)
Height with Mast Raised: 4,570 mm (180 in)
Track Width (front, centre of tyres): 1,175 mm (46.3 in)
Track Width (rear, centre of tyres): 1,180 mm (46.5 in)
Ground Clearance (under mast, with load): 150 mm (5.9 in)
Ground Clearance (center of wheelbase, with load): 252 mm (9.9 in)
Fork Dimensions (thickness x width x length): 50x150x1,220 mm (2.0x5.9x48 in)
Fork Carriage Width: 1,190 mm (46.9 in)
Minimum Outside Turning Radius: 2,735 mm (107.7 in)
Minimum Distance Between Centres of Rotation: 870 mm (34.3 in)
Working Aisle Width (with 1000x1200 mm pallets crosswise): 4,492 mm (177 in)
Working Aisle Width (with 800x1200 mm pallets crosswise): 4,292 mm (169 in)
Empty Weight: 5,710 kg (12,588 lb)
Axle Loading with Max Load (front/rear): 8,670 kg / 1,040 kg (19,114 lb / 2,293
lb)
Axle Loading without Load (front/rear): 2,560 kg / 3,150 kg (5,644 lb / 6,944
lb)
Engine Oil Change Interval: 250 hours
Engine Oil Filter Change Interval: 250 hours
Transmission Fluid Change Interval: 1,000 hours
Transmission Filter Change Interval: 1,000 hours
Hydraulic Oil Change Interval: 2,000 hours
Hydraulic Filter Change Interval: 500 hours
Coolant Change Interval: 2,000 hours or 2 years
Differential Oil Change Interval: 1,000 hours
Air Cleaner Element Replacement: When indicator shows restriction
Fuel Filter Replacement: 500 hours
Tire Pressure: Maintain as specified for pneumatic tires
Mast Chain Adjustment: Check and adjust for proper tension
Lubrication Points: Chassis grease fittings
Grease Type: Lithium complex NLGI No. 2
Recommended Engine Oil: API CF or higher diesel engine oil
Recommended Transmission Fluid: Caterpillar TO-4 or equivalent
Recommended Hydraulic Fluid: ISO VG 46 anti-wear hydraulic oil.
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