Clark S25L Specifications
The Clark S25L represents a well-engineered solution in
the 2.5-tonne capacity LPG forklift class, offering a balanced combination of
power, efficiency, and maneuverability. Powered by the Mitsubishi 4G64 LPG
engine producing 52.4 kW (70 hp), this model delivers reliable torque for
lifting and maneuvering loads up to 2500 kg while maintaining fuel efficiency
suitable for demanding applications. Its compact design, combined with a tight
turning radius of 2330 mm (91.7 in), allows for excellent maneuverability in
congested warehouse aisles and tight spaces. The S25L is equipped with pneumatic
tires, providing enhanced stability and traction on various surfaces.
Operators benefit from ergonomic features including hydrostatic power steering,
an adjustable full-suspension seat, and intuitive hydraulic controls that reduce
fatigue during extended shifts. The clear-view uprights feature extra-wide masts
with narrow center cylinders for excellent visibility, while the robust 6-roller
fork carriage with hook suspension ensures durability and precise load handling.
The LPG engine offers the advantage of cleaner combustion compared to diesel,
enabling both indoor and outdoor use for companies needing flexibility and
performance.
The Clark S25L is a rider-seated forklift powered by an LPG engine. It has a
load capacity of 2500 kg at a 500 mm load centre, equivalent to 5000 lb at a 24
in load centre. The distance from the drive axle centre to the fork face is 465
mm or 18.3 in. The truck has a wheelbase of 1650 mm or 65 in. Its service weight
is 3774 kg or 8300 lb, with axle loadings when laden of 5463 kg (12,050 lb) on
the front and 810 kg (1786 lb) on the rear. When unladen, front axle load is
1501 kg (3310 lb) and rear axle load is 2273 kg (5010 lb). Alternative sources
list service weight at 3774 kg (8320 lb) or 4200 kg (9261 lb) depending on
configuration.
The Clark S25L is powered by the Mitsubishi 4G64
engine, a sophisticated four-cylinder LPG power unit known for its reliability,
fuel efficiency, and advanced electronic controls. Later models may feature the
Ford 2.5L engine with 52 kW output.
Basic Technical Data: The engine is a four-cylinder LPG with overhead camshaft
design and ECU-controlled ignition timing for increased torque. Displacement is
2351 cc to 2488 cc (2.4 L) or 144 cu in. Rated output is 52.4 kW at 2500 rpm,
equivalent to 70 hp. Alternative sources indicate 59 hp at 2500 rpm. The engine
features an electronic tachometer and complies with relevant emission
regulations.
Lubrication: The engine employs a forced lubrication system with an oil capacity
of 5.4 liters (1.4 US gal). Routine maintenance, including oil and filter
changes, is mandated at 500-hour intervals or every 3 months to ensure longevity
and performance. Checking engine oil level should be performed every 10 hours of
operation.
Cooling: Engine temperature is regulated by a
pressurized liquid cooling system with a capacity of 8.5 liters (2.2 US gal).
Regular inspection of coolant levels and condition should be performed every 10
hours, with complete coolant change at 2000-hour intervals or annually.
Monitoring the radiator, water pump, and hoses for wear and debris is part of
standard preventative maintenance.
Transmission: The S25L is equipped with a powershift
automatic transmission with hydraulic control. The transmission features one
forward and one reverse gear, with electronic directional controls for smooth
operation. Transmission fluid capacity is 13 liters (3.4 US gal), requiring
checking every 500 hours and complete change at 2000-hour intervals or annually.
Travel Speed: This forklift achieves a laden travel speed of 18.6 km/h or 11.5
mph, and an unladen speed of 19.2 km/h or 11.9 mph.
Axles: The front axle is a drive axle with 2 driven wheels in standard
configuration, with 4x2 dual tyres available on the drive axle for improved
traction. The wheelbase is 1650 mm or 63.7 in. The drive axle has an oil
capacity of 6.5 liters (1.7 US gal), requiring checking every 500 hours and
complete change at 1000-2000 hour intervals depending on operating conditions.
The robust steering axle is designed for durability and precise handling.
Brakes: Service braking is handled by wet disc brakes. The service brake type
provides reliable and progressive deceleration essential for safety when
handling loads. The parking brake is foot pedal operated.
The electrical system operates at a standard 12 volts,
powering the starter motor, lights, and electronic control units. The system
includes a complete set of lights and safety systems as standard equipment,
including amber strobe lights and backup alarms. The neutral start safety
feature prevents the engine from starting if the gearshift is not in neutral.
The chassis is a heavy-duty, one-piece, fully welded
steel frame constructed from high-strength, welded and formed steel plate that
protects the machine from impact damage and extends its service life. The
integrated hydraulic sump provides cooling for the hydraulic system.
Wheels and Tires: The truck is fitted with pneumatic tires as standard,
providing enhanced stability and traction on various surfaces. The front tires
are size 7.00 x 12 - 14PR (7.00-12-14PR). The rear tires are size 6.00 x 9 -
10PR (6.00-9-10PR). The wheel configuration features 2 driven wheels at the
front and 2 steer wheels at the rear in standard configuration. Front tread
width is 964 mm or 38.0 in. Rear tread width is 970 mm or 38.2 in. Overall width
ranges from 1160 mm (45.7 in) to 1566 mm (61.7 in) depending on configuration.
Steering: The S25L features hydrostatic power steering that eliminates steering
kick-back, significantly reducing the effort required to turn the wheel,
especially when the truck is stationary or moving slowly under load. The
steering column is adjustable to suit the operator for comfortable operation and
easy entry and exit. Car-like pedals ensure smooth maneuvering with very little
effort while leaving plenty of room for foot support.
The hydraulic system powers the lifting, tilting, and
auxiliary functions such as sideshift. The system is designed to provide maximum
horsepower while using a load-sensing flow control valve to reduce power loss
and heat build-up. A full-flow reverse filter filters the oil to the tank at
each reverse flow, ensuring oil purity through hydraulic oil filtration on every
return to the tank. Rough particles are filtered directly via a suction filter,
preventing them from entering the oil circuit and ensuring long service life for
all hydraulic components. Gearbox oil cooling is integrated into the system.
The large 47-liter hydraulic oil tank allows the use of numerous attachments. A
safety valve provides power failure protection to prevent uncontrolled lowering
of the load at all times. The operating pressure for attachments is maximum 140
bar (2030 psi), with alternative sources indicating 207 bar (3000 psi). The
rated flow for attachments is maximum 35 l/min (9.2 gpm), with alternative
sources indicating 45 l/min (12 gpm). The hydraulic tank requires checking every
10 hours, with complete fluid change at 2000-hour intervals or annually.
| Service Refill Capacities |
Engine Oil: 5.4 liters (1.4 US gal)
Cooling System: 8.5 liters (2.2 US gal)
Transmission Fluid: 13 liters (3.4 US gal)
Drive Axle Oil: 6.5 liters (1.7 US gal)
Hydraulic System: 47 liters (12.4 US gal)
The forklift is equipped with clear-view uprights
available in Standard, Hilo, Triplex, and Quad configurations, with excellent
visibility thanks to extra-wide masts, narrow center cylinders, and optimized
mast design. Angled mast rollers and tilt cylinders mounted in pendulum bearings
enhance performance. An integrated tilt lock valve prevents excessively rapid or
unintentional forward tilting of the lifting system.
The robust 6-roller fork carriage with hook suspension features adjustable side
rollers for durability, with coined, sealed and inclined load rollers that
maximize load distribution and reduce backlash. The standard mast configuration
has a lowered height of 2165 mm or 85 in. It provides a free lift of 110 mm or
4.3 in, enabling lifting in low-clearance areas before the mast sections begin
to extend. The maximum lift height is 3300 mm or 130 in for standard mast, with
triplex masts achieving up to 4800 mm (189 in) and quad configurations reaching
higher.
The mast extends to a height of 3924 mm or 154.5 in including load backrest
depending on configuration. The mast tilts forward by 8 degrees and backward by
10 degrees to facilitate load handling and secure transport. The fork carriage
is DIN 15173 Class II A, with carriage width of 1040 mm or 41.0 in. The standard
fork dimensions are 45 mm thick, 100 mm wide, and 1070 mm long, which is 1.8 in
by 3.9 in by 42 in. Fork length of 42 in is standard, with 48 in options
available. Integral sideshift is available as standard equipment on many models.
Load Capacity - 5,000 lb (2,500 kg)
Load Centre - 24 in (500 mm)
The lift speed with a load is 0.52 m/s or 102 ft/min,
and without a load, it increases to 0.58 m/s or 114 ft/min. Lowering speeds are
0.55 m/s or 108 ft/min with load and 0.50 m/s or 98 ft/min without load. The
truck can generate a maximum drawbar pull of 21,329 N (4795 lb) when laden, and
7,366 N (1656 lb) when unladen. Its gradeability is 28 percent to 32.9 percent
when laden depending on configuration.
The overall length of the truck, including the standard
1070 mm or 42 in forks, is 3710 mm or 146 in when measured to the fork face. The
length to the face of the forks is 2640 mm or 104 in. The overall width ranges
from 1160 mm (45.7 in) to 1566 mm (61.7 in) depending on configuration, with
typical width of 1160 mm. The seat height is 1157 mm or 45.6 in, and the
coupling height is 410 mm or 16.1 in. The height to the top of the overhead
guard is 2165 mm or 85.2 in.
Ground clearance, laden, is 135 mm or 5.3 in below the mast, and 155 mm or 6.1
in at the centre of the wheelbase. The minimum aisle width required for
right-angle stacking with 1000 x 1200 mm pallets crossways is 3995 mm or 157.3
in, and for 800 x 1200 mm pallets lengthways, it is 4195 mm or 165.2 in. The
outside turning radius is 2330 mm or 91.7 in. The truck's operating weight is
3774 kg or 8320 lb.
Engine Oil: Check every 10 hours, change every 500
hours or 3 months.
Cooling System: Check every 10 hours, change every 2000 hours or annually.
Transmission Fluid: Check every 500 hours, change every 2000 hours or annually.
Drive Axle Oil: Check every 500 hours, change every 1000-2000 hours depending on
conditions.
Hydraulic System: Check every 10 hours, change every 2000 hours or annually.
Grease Points: Regular lubrication of all grease points including mast, steering
linkages, wheel bearings, and drive axle components is required, with wheel
bearing grease change at 2000-hour intervals or annually.
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