Cat C4000 Specifications
The Caterpillar C4000 is a 4,000 lb capacity cushion
tire forklift engineered for high-performance indoor material handling in
warehouses and distribution centers. Powered by a Nissan K25 engine, this model
is configurable for gasoline or LPG operation, offering flexibility for various
applications. The C4000 features a single-speed powershift transmission with a
hydraulic accumulator for smooth directional changes, a drive-by-wire throttle
for responsive control, and hydrostatic power steering for precise
maneuverability in tight aisles. The operator compartment is designed with
ergonomic cowl-mounted hydraulic levers, a memory tilt steering column, and a
two-pedal braking system to reduce operator fatigue. A cast drive axle and
engine protection system contribute to the machine's durability and reliability
in continuous-duty applications.
Engine Model: Nissan K25
Power Type: Gasoline / LP Gas
Continuous Output SAE Gross: 60.0 hp (45.0 kW) @ 2,700 rpm
Maximum Torque SAE Gross: 136 lb-ft (785 Nm) @ 1,600 rpm
Number of Cylinders: 4
Displacement: 152 cu in (2.5 L)
Fuel System: Multi-port fuel injection (gasoline models)
Fuel System: Throttle-body fuel injection (LP models)
Engine Protection System: Standard
Lubrication System Type: Pressurized, full-flow filtration
Oil Capacity (with filter change): 6.0 US qt (5.7 L)
Recommended Oil: API service class SF or higher, SAE 10W-30
Cooling System Type: Pressurized, water-cooled with centrifugal pump
Coolant Capacity: 2.5 US gal (9.5 L)
Transmission Type: Single-speed powershift with
hydraulic accumulator
Transmission Control: Electronic shift control
Number of Speeds Forward / Reverse: 1/1
Travel Speed (loaded): 11.0 mph (17.5 km/h)
Travel Speed (empty): 11.5 mph (18.0 km/h)
Drive Axle (Front): Heavy-duty cast drive axle with planetary reduction
Steer Axle (Rear): High-strength cast axle housing, oscillating type
Service Brake Type: Foot-operated, hydraulic, self-adjusting
Parking Brake Type: Hand-operated, mechanical
System Voltage: 12V
Battery: Maintenance-free, high-output
Alternator: High-output
Throttle Control: Responsive drive-by-wire
Gauges and Warning Lights: Operational
Wheel Configuration (x = driven): 2x front / 2 rear
Tire Type: Cushion
Tire Size (front, standard): 21.0 x 7.0 x 15.0
Tire Size (rear): 16.0 x 6.0 x 10.0
Tire Configuration: Single cushion drive and steer tires
Steering Type: Hydrostatic power steering
Steering Axle: High-strength cast axle housing
Steering Column: Memory tilt steering column
Hydraulic Pump Type: High-output direct-drive gear pump
Hydraulic Flow: 23.5 gpm (89.0 L/min)
System Relief Pressure (main): 2,250 psi (158 bar)
Control Levers: Cowl-mounted hydraulic levers with ergonomic knobs
| Service Refill Capacities |
Fuel Tank: 14.0 US gal (53.0 L)
Engine Oil (with filter): 6.0 US qt (5.7 L)
Cooling System: 2.5 US gal (9.5 L)
Hydraulic System: 8.5 US gal (32.2 L)
Transmission: 3.5 US qt (3.3 L)
Drive Axle: 2.0 US qt (1.9 L)
Mast Type Available: Two-stage or three-stage with free
lift
Mast Lowered Height (2-stage): 83.5 in (2,110 mm)
Mast Extended Height (2-stage, maximum fork height): 131 in (3,340 mm)
Free Fork Height (2-stage): 5.1 in (130 mm)
Tilt Range (forward / backward): 5° / 9°
Carriage Type: Hook type
Fork Thickness: 1.6 in (45.0 mm)
Fork Width: 3.9 in (100 mm)
Fork Length: 42.0 in (1,070 mm)
Fork Spread (out-to-out, min / max): 7.8 in / 36.0 in (200 mm / 920 mm)
Load Backrest Extension: 48 in high
Rated Capacity: 4,000 lb (2,000 kg)
Load Center Distance: 24.0 in (500 mm)
Load Moment Constant: 16.3 in (415 mm)
Lift Speed (with rated load): 125 fpm (640 mm/s)
Lift Speed (without load): 130 fpm (650 mm/s)
Lowering Speed (loaded / empty): 99.0 fpm / 99.0 fpm (500 mm/s / 500 mm/s)
Drawbar Pull (loaded, 60 min rating): 4,350 lb (19,400 N)
Drawbar Pull (loaded, 5 min rating): 4,900 lb (21,700 N)
Gradeability (loaded at 1 mph / 1.6 km/h): 41.6%
Gradeability (maximum, loaded): 47.6%
Gradeability (maximum, empty): 27.7%
Length to Face of Forks: 90.5 in (2,295 mm)
Overall Width (with standard tires): 42.0 in (1,065 mm)
Overall Width (with optional duals): 44.5 in (1,130 mm)
Height to Top of Overhead Guard: 82.0 in (2,075 mm)
Height (with lowered mast): 83.5 in (2,110 mm)
Height (with extended mast): 180 in (4,570 mm)
Wheelbase: 55.0 in (1,400 mm)
Front Tread Width (standard tires): 35.0 in (890 mm)
Front Tread Width (optional duals): 37.5 in (950 mm)
Rear Tread Width: 35.0 in (890 mm)
Seat Height: 43.0 in (1,090 mm)
Ground Clearance (at lowest point of mast): 3.1 in (80.0 mm)
Ground Clearance (at center of wheelbase): 5.4 in (139 mm)
Minimum Outside Turning Radius: 77.5 in (1,965 mm)
Right Angle Stack Aisle (zero clearance without load): 93.5 in (2,380 mm)
Empty Operating Weight: 7,360 lb (3,338 kg)
Axle Load (w/rated load, front / rear): 9,975 lb / 4,310 lb (4,525 kg / 1,954
kg)
Axle Load (w/o load, front / rear): 3,050 lb / 4,310 lb (1,384 kg / 1,954 kg)
Engine Oil and Filter Change: Every 250 hours or 3
months
Engine Air Filter Element: As indicated by restriction gauge (check daily)
Fuel Filter Replacement: Every 500 hours or 6 months
Hydraulic Oil Filter Replacement: Every 1,000 hours
Hydraulic Oil Change: Every 2,000 hours
Transmission Fluid and Filter Change: Every 1,000 hours
Drive Axle Oil Change: Every 1,000 hours
Coolant Change: Every 2,000 hours or 2 years
Chassis Greasing: Every 50 hours or weekly
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