Clark GPS25MB Specifications
The Clark GPS25MB is a mid-capacity pneumatic-tire
internal-combustion forklift engineered for versatile material-handling
operations across mixed indoor-outdoor industrial environments. With a nominal
lifting capacity of 2,500 kg (5,500 lb), the GPS25MB occupies an important
position in Clark’s pneumatic-tire lineup, offering a balance of lifting power,
reliable driveline performance, and stable handling on uneven operating
surfaces.
The pneumatic-tire configuration provides
improved vibration damping, making the forklift well suited for cracked
pavement, outdoor yards, partially unpaved surfaces, and transition
zones between warehouse floors and industrial loading areas.
The machine incorporates a fully welded steel chassis with reinforced
structural members, a high-visibility mast designed to minimize
deflection under load, and a heavy-duty driveline optimized for
repetitive lifting cycles. The operator station is engineered for
ergonomic comfort and intuitive control placement, supporting reduced
operator fatigue during extended shifts.
The GPS25MB is widely used in manufacturing
plants, fabrication yards, construction material depots, freight
terminals, and multi-surface industrial zones requiring predictable
hydraulic response, consistent traction, and durable daily performance.
The Clark GPS25MB is typically equipped with one of two
industrial internal-combustion engines: the Waukesha 2.9-liter LPG/Gasoline
engine or the Continental TM27 2.7-liter LPG/Gasoline engine. Both engines are
well established in the industrial equipment sector for their smooth torque
delivery, stable low-RPM performance, and long-duration operational durability
under heavy material-handling workloads.
Engine Option (Waukesha 2.9L LPG/Gasoline):
- Inline 4-cylinder, 4-stroke OHV industrial engine
- Displacement: approx. 2.9 L
- Power output: approx. 45-60 kW (60-80 hp)
- Torque: approx. 140-165 lb-ft (190-224 Nm)
- Rated operating speed: approx. 2,500-2,700 rpm
- Idle speed: approx. 750-850 rpm
- Fuel: LPG or gasoline
- Induction: mixer-type LPG vapor system or carbureted gasoline
Engine Option (Continental TM27 2.7L
LPG/Gasoline):
- Displacement: approx. 2.7 L
- Power: approx. 45-55 kW (60-74 hp)
- Torque: approx. 135-155 lb-ft (183-210 Nm)
- Governed speed: approx. 2,600-2,800 rpm
- Idle: approx. 750-850 rpm
- Fuel: LPG or gasoline
- Fuel system: mixer-regulated LPG vapor draw
Engine Construction:
- Deep-ribbed cast-iron block
- Heat-resistant cast-iron cylinder head
- Forged-steel crankshaft and multi-bearing support
- Precision-machined connecting rods
- Aluminum pistons with oil-cooled under-crowns
- Positive crankcase ventilation
Fuel System:
- LPG vapor-induction system with regulator and lock-off
- Gasoline carburetor for gasoline variants
- Multi-stage filtration and sediment separation
- Mechanical or electric pump depending on configuration
Lubrication System:
- Full-pressure wet-sump lubrication
- Gear-type crankshaft-driven oil pump
- Oil capacity: approx. 4-5 L (4.2-5.3 qt)
- Pressure range: 200-380 kPa (29-55 psi)
- Oil type: SAE 10W-30 or 15W-40 industrial oil
- Full-flow spin-on filter
Cooling System:
- Liquid-cooled forced-circulation design
- Belt-driven centrifugal water pump
- High-capacity industrial radiator
- Coolant capacity: approx. 7-8 L (7.4-8.4 qt)
- Thermostat opening: approx. 82°C (180°F)
- System pressure: approx. 13-15 psi (90-103 kPa)
The GPS25MB uses a torque-converter powershift
transmission built for high-frequency directional changes and controlled
low-speed torque delivery.
Transmission:
- Type: torque-converter powershift
- Gearing: forward/reverse; single-speed or two-speed depending on variant
- Forward travel speed (unladen): approx. 16-18 km/h (10-11 mph)
- Reverse travel speed: approx. 14-16 km/h (9-10 mph)
- Transmission capacity: approx. 6-7 L (6.3-7.4 qt)
- ATF type: Dexron III or Clark-approved equivalent
- Hydraulic clutch packs with smooth controlled engagement
- Integrated transmission oil cooling
Drive Axle:
- Cast-steel differential housing
- Planetary reduction hubs
- Axle lubricant volume: approx. 4-5 L (4.2-5.3 qt)
- Lubricant grade: SAE 80W-90 or 85W-140
Brake System:
- Oil-immersed wet-disc brakes
- Long-life friction plates
- Self-adjusting internal actuation
- Mechanical lever-type parking brake
- System voltage: 12 V
- Battery capacity: approx. 80-100 Ah
- Alternator output: approx. 55-75 A
- Starter motor: approx. 1.7-2.5 kW
- Industrial-grade wiring harness
- Operator-presence and neutral-start interlocks
- LPG lock-off solenoid
- Lighting: headlights, tail lamps, optional beacon and work lights
Drive Layout:
- Drive wheels: front
- Steering wheels: rear
- Drive configuration: 2WD pneumatic-tire system optimized for traction on mixed
surfaces
Tire Specifications:
- Front pneumatic tires: approx. 28x9-15
- Rear pneumatic tires: approx. 6.50x10
Optional Tires:
- Solid pneumatic variants
- Aggressive outdoor tread options
- Non-marking compounds for indoor applications
Chassis Construction:
- Fully welded steel frame
- Reinforced cross-members
- Protected hydraulic and electrical routing
- Low center of gravity for load stability
Steering:
- Steering type: fully hydrostatic
- Pump flow: approx. 10-13 L/min (2.6-3.4 gpm)
- Oscillating steer axle with heavy pivot bearings
- Turning radius: approx. 2.1-2.4 m (83-95 in)
- Steering feel: smooth, low-effort, consistent under load
- Max hydraulic pressure: approx. 2,300-2,600 psi
(159-179 bar)
- Pump type: engine-driven external gear pump
- Pump flow: approx. 35-55 L/min (9-14.5 gpm)
- Reservoir capacity: approx. 22-26 L (23-27 qt)
- Fluid type: ISO VG 32 or 46
- Lift cylinders: heavy-duty double-acting
- Tilt cylinders: dual opposed cylinders with pressure relief
- Optional auxiliary hydraulics: sideshift, fork-positioner, clamps, rotators
| Service Refill Capacities |
- Engine oil: approx. 4-5 L (4.2-5.3 qt)
- Coolant: approx. 7-8 L (7.4-8.4 qt)
- Transmission fluid: approx. 6-7 L (6.3-7.4 qt)
- Drive axle oil: approx. 4-5 L (4.2-5.3 qt)
- Hydraulic oil: approx. 22-26 L (23-27 qt)
- Mast types: Duplex and Triplex (full free-lift
available)
- Duplex lift height: approx. 3.0-3.6 m (118-142 in)
- Triplex lift height: approx. 4.3-5.5 m (169-216 in)
- Free lift: approx. 0.15-0.40 m (6-16 in)
- Standard forks: 1,067-1,219 mm (42-48 in)
- Optional forks: 1,524 mm (60 in) and longer
- Fork width: approx. 100 mm (4 in)
- Fork thickness: approx. 40-50 mm (1.6-2.0 in)
Rated capacity: 2,500 kg (5,500 lb) at 600 mm (24 in)
load center
De-rating caused by attachments, mast height, uneven surfaces, load geometry
- Lift speed (unladen): approx. 0.45-0.55 m/s
- Lift speed (laden): approx. 0.30-0.40 m/s
- Lowering speed (unladen): approx. 110-140 ft/min
- Lowering speed (laden): approx. 130-160 ft/min
- Travel speed (unladen): approx. 16-18 km/h
- Travel speed (laden): approx. 14-16 km/h
- Gradeability (unladen): approx. 18-22%
- Gradeability (laden): approx. 14-18%
- Drawbar pull: approx. 12,000-15,000 N
- Overall length to fork face: approx. 2.4-2.6 m
(94-102 in)
- Overall width: approx. 1.1-1.2 m (43-47 in)
- Overhead guard height: approx. 2.1-2.2 m (83-87 in)
- Wheelbase: approx. 1.45-1.55 m (57-61 in)
- Ground clearance: approx. 130-150 mm (5.1-5.9 in)
- Turning radius: approx. 2.1-2.4 m (83-95 in)
- Aisle width (pallet 1000x1200): approx. 3.6-3.9 m (142-154 in)
- Maximum fork height: 3.0-5.5 m depending on mast
- Free lift: approx. 0.15-0.40 m
- Fork lengths: 42-60 in
- Operating weight: approx. 3,800-4,300 kg (8,378-9,480 lb)
250-Hour:
- Replace engine oil and filter
- Lubricate mast and steer axle
- Clean radiator
- Inspect battery
500-Hour:
- Replace transmission filter
- Check hydraulic filter
- Inspect driveline couplings
- Read axle bearings
1,000-Hour:
- Replace transmission oil
- Replace drive axle lubricant
- Inspect cylinders
- Verify mast alignment
2,000-Hour:
- Replace hydraulic oil
- Replace coolant
- Full mast structural inspection
- Test all safety interlocks
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| Telehandlers Specifications |
| Front-End Loader Specifications |