Clark CGP30 Specifications
The Clark CGP30 is a mid-capacity internal-combustion
pneumatic-tire forklift engineered for industrial applications requiring
dependable outdoor capability, balanced performance, and simplified servicing.
With a nominal lifting capacity of approximately 3,000 kg (6,600 lb), the CGP30
occupies a critical segment of Clark’s product line, delivering a reliable
combination of engine power, wide-stance stability, high-traction pneumatic
tires, and rugged structural design suitable for harsh operating environments.
This model is widely used in lumber yards,
construction material depots, agricultural processing sites, steel
handling operations, manufacturing plants, outdoor distribution yards,
and facilities that require continuous load-handling across mixed or
uneven terrain.
Built around a welded steel chassis, reinforced mast assembly,
industrial hydraulic system, and a durable powershift transmission, the
CGP30 provides long service life with predictable lifting and driving
performance. Operators benefit from a comfortable cab with good outward
visibility, intuitive lever layout, smooth hydrostatic steering, and a
balanced seat-to-mast geometry that reduces fatigue during extended
shifts.
Maintenance teams appreciate the logical
component arrangement, open engine access, accessible hydraulic filters,
durable wet-disc or drum brake systems, and simple electrical
configuration. As part of Clark’s proven forklift heritage, the CGP30
remains an efficient and cost-effective solution for fleets requiring
mid-range outdoor lift capabilities.
The Clark CGP30 is typically powered by robust
industrial internal-combustion engines optimized for outdoor forklift
applications where torque stability, fuel efficiency, and durability are
essential. Common engine options include Mitsubishi 4G64 (gasoline/LPG), GM/PSI
2.4L LPG, and Nissan K21 industrial LPG engines depending on production year and
emissions requirements.
Mitsubishi 4G64:
- Configuration: inline 4-cylinder, 4-stroke
- Displacement: approx. 2.4 L
- Power output: approx. 40-50 kW (54-67 hp)
- 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: gasoline/LPG with industrial carburetion or mixer
GM/PSI 2.4L LPG:
- Displacement: approx. 2.4 L
- Power: approx. 45-55 kW (60-74 hp)
- Torque: approx. 150-170 Nm (111-125 lb-ft)
- Clean exhaust profile suitable for mixed indoor/outdoor work
Nissan K21 Industrial LPG:
- Output: approx. 40-50 kW (54-67 hp)
- Torque: approx. 140-160 Nm (103-118 lb-ft)
- Emissions: compliant with low-emission indoor-capable standards
Engine Construction:
- Cast-iron block for long service life
- Cast-iron or aluminum head depending on engine
- Forged-steel crankshaft supported by multiple main bearings
- Reinforced aluminum pistons with heat-resistant crowns
- Heavy-duty industrial valve train
Fuel System:
- LPG vaporizer/regulator with mixer
- High-efficiency industrial air cleaner
- Multi-stage fuel filtration
- Solenoid-controlled automatic shutoff for LPG safety
Lubrication System:
- Full-pressure wet-sump lubrication
- Crankshaft-driven gear-type oil pump
- Oil capacity: approx. 3.5-5.0 L (3.7-5.3 qt)
- Normal oil pressure: approx. 250-400 kPa (36-58 psi)
- Oil: SAE 10W-30 or 15W-40
- Replaceable spin-on full-flow oil filter
Cooling System:
- Liquid-cooled industrial cooling system
- Belt-driven centrifugal water pump
- Coolant capacity: approx. 6-8 L (6.3-8.4 qt)
- Radiator: heavy fin-core outdoor-duty
- Thermostat: approx. 82°C (180°F)
- Pressure cap: approx. 13 psi (90 kPa)
A durable powershift transmission provides dependable
operation under frequent directional changes and varied load conditions.
Transmission:
- Type: torque-converter powershift
- Forward speed (unladen): approx. 18-20 km/h (11-12.5 mph)
- Reverse speed (unladen): approx. 16-18 km/h (10-11 mph)
- Fluid capacity: approx. 7-10 L (7.4-10.5 qt)
- Fluid: Dexron III ATF or Clark-approved industrial ATF
- Direction shifting: steering-column mounted lever controlling hydraulic clutch
packs
Drive Axle:
- Housing: cast-steel industrial differential
- Final reduction: planetary hub reduction
- Axle oil capacity: approx. 4-6 L (4.2-6.3 qt)
- Lubricant: SAE 80W-90 or 85W-140 depending on environment
Brake System:
- Service brakes: hydraulic drum brakes (standard) or wet-disc brakes (optional)
- Parking brake: mechanical lever-activated drum brake
- Brake behavior: stable stopping on outdoor surfaces and mixed terrains
- System voltage: 12 V
- Battery capacity: approx. 70-90 Ah
- Alternator output: approx. 40-70 A
- Starter motor: approx. 1.4-2.0 kW
- Safety switches: neutral-start, operator-presence
- Wiring: abrasion-resistant industrial harness
- Lighting: headlights, rear lamps, optional overhead work lamps
Drive
Configuration:
- Drive wheels: front
- Steering wheels: rear
- Drive system: 2WD pneumatic-tire forklift
Tire Specifications (Pneumatic):
- Front: approx. 28x9-15 or equivalent
- Rear: approx. 6.50x10 or equivalent
Optional Tires:
- Solid pneumatic tires
- High-traction lug tires for loose gravel or outdoor yards
- Non-marking tires for mixed indoor responsibilities
Chassis Structure:
- Fully welded steel frame
- Reinforced mast support base
- Integrated counterweight engineered for stability
- Protected hydraulic and electrical line routing under frame armor
Steering:
- Fully hydrostatic power steering
- Steering pump flow: approx. 8-12 L/min (2.1-3.2 gpm)
- Steering axle: oscillating rear axle with steel pivot bushings
- Turning radius: approx. 2.0-2.3 m (79-91 in)
- Steering behavior: light-effort, stable, precise during load maneuvers
- Max hydraulic pressure: approx. 2,200-2,400 psi
(152-165 bar)
- Hydraulic pump: engine-driven external gear pump
- Pump flow: approx. 30-45 L/min (8-12 gpm)
- Reservoir capacity: approx. 20-25 L (21-26 qt)
- Fluid grade: ISO VG 32 or ISO VG 46
- Lift cylinders: double-acting with cushioning for smooth stop-and-hold
- Tilt cylinders: dual cylinders with check-valve stabilization
- Auxiliary circuits: available for sideshift, fork-positioner, or clamp
attachments
| Service Refill Capacities |
- Engine oil: 3.5-5.0 L (3.7-5.3 qt)
- Cooling system: 6-8 L (6.3-8.4 qt)
- Transmission: 7-10 L (7.4-10.5 qt)
- Drive axle oil: 4-6 L (4.2-6.3 qt)
- Hydraulic oil: 20-25 L (21-26 qt)
Mast Types:
- V (2-stage duplex)
- FV (3-stage full free-lift triplex)
Lift Heights:
- Duplex mast: approx. 3.0-4.0 m (118-157 in)
- Triplex mast: approx. 4.5-6.0 m (177-236 in)
Free Lift:
- Approx. 0.2-1.0 m (8-39 in) depending on mast design
Fork Specifications:
- Length: 1,067-1,219 mm (42-48 in)
- Optional: up to 1,524 mm (60 in)
- Width: approx. 100-125 mm (4-5 in)
- Thickness: approx. 35-45 mm (1.4-1.8 in)
- Rated capacity: 3,000 kg (6,000-6,600 lb) at 600 mm
(24 in) load center
Capacity de-rates with:
- increased mast height
- long forks/extensions
- attachments (clamps, rotators, sideshift)
- off-center load distribution
- uneven or sloped terrain
- 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. 18-20 km/h (11-12.5 mph)
- Travel speed (laden): approx. 14-16 km/h (9-10 mph)
- Gradeability (unladen): approx. 20-25%
- Gradeability (laden): approx. 12-15%
- Drawbar pull: approx. 12,000-18,000 N (2,700-4,050 lbf)
- Overall length to fork face: approx. 2.6-2.8 m
(102-110 in)
- Overall width: approx. 1.15-1.25 m (45-49 in)
- Overhead guard height: approx. 2.1-2.2 m (83-87 in)
- Wheelbase: approx. 1.6-1.7 m (63-67 in)
- Ground clearance: approx. 110-130 mm (4.3-5.1 in)
- Turning radius: approx. 2.0-2.3 m (79-91 in)
- Aisle width (1000x1200 pallet): approx. 3.7-4.0 m (146-157 in)
- Maximum fork height: 3.0-6.0 m (with proper mast)
- Free lift: 0.2-1.0 m
- Fork lengths: 42-60 in
- Operating weight: approx. 4,000-5,000 kg (8,818-11,023 lb)
- Counterweight mass: approx. 1,200-1,800 kg (2,645-3,968 lb)
250-Hour Service:
- Replace engine oil and filter
- Lubricate mast tracks
- Clean radiator core
- Clean air filter
- Battery inspection
500-Hour Service:
- Replace fuel filter
- Inspect driveline and shaft couplings
- Inspect brake shoes or wet-disc assemblies
- Check axle seals
1,000-Hour Service:
- Replace transmission oil
- Replace axle oil
- Inspect hydraulic cylinders
- Check mast chain elongation
2,000-Hour Service:
- Replace hydraulic oil
- Replace coolant
- Full mast inspection
- Test neutral-start and operator-presence systems
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