Clark CGC25 Specifications
The Clark CGC25 is a compact, cushion-tire,
internal-combustion forklift engineered for indoor warehouses, distribution
centers, manufacturing plants, packaging operations, automotive production
lines, and general industrial environments requiring refined maneuverability and
strong mid-capacity lifting performance.
With a nominal load capacity of 2,268 kg (5,000
lb), the CGC25 provides a balance of power, turning agility,
low-emission operation, ergonomic comfort, and long-term mechanical
durability. Powered typically by an industrial LPG engine such as the
Mitsubishi S4S, Mazda M4G, or GM/PSI 2.4/2.0L LPG engines (depending on
production year and region), the CGC25 offers smooth throttle response,
stable torque delivery, and clean combustion well-suited for indoor use.
Cushion tires provide reduced turning radius,
improved aisle maneuvering, and smooth operation on concrete warehouse
floors. The welded-steel chassis, reinforced mast structure, and
balanced counterweight arrangement ensure stable lifting performance
with excellent forward visibility.
Technicians appreciate the organized mechanical
layout, protected routing of hydraulic lines, easily accessible filters,
and long-life components. The CGC25 remains one of Clark’s most popular
indoor cushion-tire models, delivering reliable performance, efficient
energy use, strong serviceability, and proven long-term value in fleet
operations.
The Clark CGC25 is commonly equipped with industrial
LPG engines designed for indoor environments where clean exhaust output, smooth
operation, and moderate noise levels are essential.
Mitsubishi 4G64 Industrial LPG Engine:
- Configuration: inline 4-cylinder, 4-stroke LPG
- Displacement: approx. 2.4 liters
- Power output: approx. 40-50 kW (54-67 hp)
- Peak torque: approx. 150-180 Nm (111-133 lb-ft)
- Rated speed: approx. 2,400-2,600 rpm
- Idle speed: approx. 650-750 rpm
- Fuel system: LPG vapor-withdrawal system with regulator/vaporizer and mixer
GM/PSI 2.4L or 2.0L LPG Engine:
- Displacement: approx. 2.0-2.4 liters
- Power output: approx. 45-55 kW (60-74 hp)
- Torque output: approx. 150-170 Nm (111-125 lb-ft)
- Emissions: tuned for indoor compliance with catalytic exhaust
Engine Construction:
- Heavy cast-iron block for rigidity
- Cast-iron or aluminum cylinder head depending on engine family
- Forged-steel crankshaft supported by multiple main bearings
- Aluminum pistons with heat-resistant crowns
- Industrial-duty valve train optimized for long service life
Fuel System:
- LPG vaporizer/regulator with mixer
- Multi-stage fuel filtration
- Automatic fuel shutoff solenoid and pressure-rated fuel lines
- Carburetion or fuel-injection depending on production year
Lubrication System:
- Full-pressure wet sump lubrication
- Gear-type crankshaft-driven oil pump
- Oil capacity: approx. 3.5-5.0 L (3.7-5.3 qt)
- Operating oil pressure: approx. 250-400 kPa (36-58 psi)
- Lubricant: SAE 10W-30 or 15W-40
- Filter: spin-on full-flow replaceable
Cooling System:
- Liquid-cooled forced-circulation system
- Belt-driven centrifugal water pump
- Coolant capacity: approx. 6-8 L (6.3-8.4 qt)
- Thermostat opens near 82°C (180°F)
- Pressurized radiator rated approx. 13 psi (90 kPa)
- Industrial fin-core radiator optimized for indoor airflow patterns
The CGC25 uses a compact, responsive industrial
powershift transmission suited for repetitive forward-reverse cycles typical of
indoor warehouse work.
Transmission:
- Type: torque-converter powershift
- Gears: forward, reverse, neutral
- Forward travel speed (unladen): approx. 15-18 km/h (9-11 mph)
- Reverse travel speed: approx. 13-15 km/h (8-9.5 mph)
- Transmission fluid capacity: approx. 5-7 L (5.3-7.4 qt)
- Recommended fluid: Dexron III ATF
- Directional control: steering-column mounted lever actuating hydraulic clutch
packs
Drive Axle:
- Cast-steel differential housing
- Planetary reduction hubs
- Axle oil capacity: approx. 3-4 L (3.2-4.2 qt)
- Lubricant: SAE 80W-90 gear oil
Brake System:
- Service brakes: hydraulic drum brakes (standard in cushion-tire warehouse
forklifts)
- Optional: wet-disc brakes for heavy industrial versions
- Parking brake: mechanical hand-lever drum brake
- Smooth indoor braking characteristics optimized for concrete floors
- System voltage: 12 V
- Battery capacity: approx. 55-75 Ah
- Alternator output: approx. 35-60 A
- Starter motor rating: approx. 1.2-1.8 kW
- Wiring: industrial-grade insulated harness
- Safety features: neutral-start switch, operator presence system
- Lighting: headlights, rear lamps, optional overhead warehouse lighting
Drive
Configuration:
- Front-wheel drive
- Rear-wheel steering
- 2-wheel drive for indoor warehouse conditions
Tires (Cushion):
- Front tires: approx. 21x7x15
- Rear tires: approx. 16x5x10.5
Optional Tires:
- Non-marking cushion tires for food processing or cleanrooms
- High-temperature-resistant tires for foundry-adjacent environments
Chassis Structure:
- Fully welded industrial-grade steel frame
- Reinforced mast support base
- Integrated counterweight for balanced lifting
- Protected routing for electrical and hydraulic lines beneath shielding panels
Steering:
- Type: fully hydrostatic power steering
- Steering pump flow: approx. 6-10 L/min (1.6-2.6 gpm)
- Rear axle: oscillating with center pivot bushing
- Turning radius: approx. 1.7-1.9 m (67-75 in)
- Designed for tight aisle maneuverability and smooth indoor steering response
- Maximum hydraulic pressure: approx. 2,000-2,200 psi
(138-152 bar)
- Pump: engine-driven external gear pump
- Pump flow: approx. 25-35 L/min (6.6-9.2 gpm)
- Hydraulic reservoir: approx. 20-25 L (21-26 qt)
- Fluid type: ISO VG 32 or VG 46 hydraulic oil
- Lift cylinders: double-acting cylinders with cushioning
- Tilt cylinders: dual, providing mast pitch control
- Auxiliary hydraulics: optional for sideshift, fork-positioner, or clamp
attachments
| Service Refill Capacities |
- Engine oil: approx. 3.5-5.0 L (3.7-5.3 qt)
- Cooling system: approx. 6-8 L (6.3-8.4 qt)
- Transmission fluid: approx. 5-7 L (5.3-7.4 qt)
- Drive axle oil: approx. 3-4 L (3.2-4.2 qt)
- Hydraulic oil: approx. 20-25 L (21-26 qt)
Mast Types:
- Two-stage V mast (duplex)
- Three-stage FV mast (triplex full free lift)
Lift Height Ranges:
- Duplex: approx. 2.5-3.5 m (98-138 in)
- Triplex: approx. 4.0-5.5 m (157-216 in)
Free Lift:
- Approx. 0.1-0.8 m (4-31 in) depending on mast
Fork Specifications:
- Standard fork length: 914-1,067 mm (36-42 in)
- Optional lengths: 1,067-1,219 mm (42-48 in)
- Fork width: approx. 100-125 mm (4-5 in)
- Fork thickness: approx. 35-45 mm (1.4-1.8 in)
- Rated lifting capacity: 2,268 kg (5,000 lb) at 600 mm
(24 in) load center
Capacity reductions occur with:
- higher mast elevation
- long forks or extensions
- side-shift or clamp attachments
- off-center loading
- uneven flooring or inclines
- Lift speed (unladen): approx. 0.40-0.50 m/s (80-100
ft/min)
- Lift speed (laden): approx. 0.25-0.30 m/s (50-60 ft/min)
- Lowering speed (unladen): approx. 90-120 ft/min
- Lowering speed (laden): approx. 110-140 ft/min
- Travel speed (unladen): approx. 15-18 km/h (9-11 mph)
- Travel speed (laden): approx. 12-14 km/h (7-9 mph)
- Gradeability (unladen): approx. 18-22%
- Gradeability (laden): approx. 10-14%
- Drawbar pull: approx. 10,000-15,000 N (2,248-3,370 lbf)
- Overall length to fork face: approx. 2.1-2.3 m (83-91
in)
- Overall width: approx. 1.0-1.1 m (39-43 in)
- Overhead guard height: approx. 2.0-2.1 m (79-83 in)
- Wheelbase: approx. 1.4-1.5 m (55-59 in)
- Ground clearance: approx. 80-100 mm (3.1-4.0 in)
- Turning radius: approx. 1.7-1.9 m (67-75 in)
- Aisle width (1000x1200 pallet): approx. 3.0-3.3 m (118-130 in)
- Max fork height: 2.5-5.5 m depending on mast
- Free lift: 0.1-0.8 m
- Fork lengths: 36-48 in
- Operating weight: approx. 3,200-3,700 kg (7,055-8,157 lb)
- Counterweight mass: approx. 700-1,000 kg (1,543-2,205 lb)
250-Hour
Maintenance:
- Replace engine oil and filter
- Lubricate mast and steering linkages
- Clean air filter
- Clean radiator fins
- Inspect battery
500-Hour Maintenance:
- Replace fuel filter
- Inspect driveline components
- Check brake shoes and drums
- Inspect axle seals
1,000-Hour Maintenance:
- Replace transmission oil
- Replace axle lubricant
- Inspect hydraulic cylinders
- Check chain stretch and mast alignment
2,000-Hour Maintenance:
- Replace hydraulic oil
- Replace coolant
- Perform full mast structural inspection
- Test operational safety systems
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