Demo Video
Description
We are excited to offer this professionally reconditioned 1992 Komatsu PC20-7 mini excavator, which has an operating weight of 2,980 Kg (6,571 pounds) and only 2,404 hours of usage. The machine is in excellent running condition, as demonstrated by our transparent photos and video. The machine is powered by a Yanmar diesel engine (3D84N-2H) with a capacity of 25.6 HP. Additionally, this unit has been modified to operate with Caterpillar (S.A.E) control pattern by default.
The mini excavator has undergone thorough servicing, including a replacement of hydraulic fluids, engine oils, coolant with antifreeze, and air, fuel, and oil filters. We have also made several upgrades, including a new hydraulic thumb controlled by a foot pedal, a new water-resistant seat and seat belt, a new starting battery, a new LED headlight, new bucket teeth, new decals, and a bright Komatsu-green paint job. The unit has been fumigated and steam cleaned in accordance with U.S. CBP import requirements. This machine also comes with a spare ignition key, spare bucket teeth, spare filters, and a full set of operations & part manuals.
Product Features
Komatsu PC20-7 is simply a feature-packed model. Comparing to previous iterations of PC20 series, this model's arm speed is increased by 10 - 15 % thanks to improved hydraulic flow efficiency. The machine is equipped with a standard hydraulic service valve that is currently being used for its new hydraulic thumb, but this valve can be easily retrofitted to install a hydraulic breaker or other attachments. It is also designed for small alleys and urban areas in mind with only 1,080 mm (3'7") compact turning radius during boom swing (when the boom is at 90 degree angle relative to the cabin). Digging a gutter next to a wall? This model has the widest bucket offset amount with 570 mm (1'10") left-hand offset and 630 mm (2'1") right-hand offset.
As an improvement from generations, this model has been re-designed with operator's comfort in mind. Getting on and off the machine is now accessible from left and right sides of the machine with a new convenient walk-through style. The engine hood is now a curved body with much less overhang and armed with 2 reinforced protectors on back sides of the cab to prevent accidental damages during tight turns. Running out of fuel? Just turn on the start switch for automatic fuel system bleeding! The undercarriage has been re-engineered to tackle rough terrains with newly-equipped upper wheels to provide better track suspension and further prevent the tracks from coming off.
With Japanese ingenuity of applying sound-absorbing material to various parts of the machine, low noise performance comparable to that of a passenger car has been achieved. This model is designed for night work and urban areas such as schools and hospitals with noise level rated at 55 dBA @ 30 meter (98'5") and 68 dBA @ 7 meter (23'0"). To operator's ears, noise exposure is rated at only 78 dBA.
Product Manuals
- Operation & Maintenance: Available for Customer Only
- Shop & Repair: Available for Customer Only
- Excavator Parts: Available for Customer Only
- Engine Parts: Available for Customer Only
General
- Make: Komatsu
- Model: PC20-7
- Serial #: 39985
- Track: Rubber (pre-owned)
- Year built: 1992
- Hour meter: 2,404
- Origin: Japan
- Operating weight: 2,640 Kg (5,821 lbs)
- Bucket digging force: 1,900 Kg (4,189 lbs)
- Max ground pressure: 0.27 Kg/cm2 (3.8 psi)
- Swing speed: 8.6 rpm
- Swing max slope angle: ? deg.
- Travel speed: 2.6 kmh (1.6 mph)
- Gradeability: 30 deg.
Engine
- Make: Komatsu
- Serial #: 18001
- Fuel: Diesel
- Model: 3D84N-2H
- No. of cylinders - bore x stroke: 3 - 84 mm x 86 mm (3.31" x 3.39")
- Piston displacement: 1.330 L (81.2 cu.in.)
- Firing order: ?
- Flywheel horsepower: 26 HP @ ? RPM
- Max torque: ? Kgm @ ? rpm
- Max speed at no load (high idling) : 2,675 rpm
- Min speed at no load (low idling): 900 rpm
- Min fuel consumption: ? g/HP.h
- Alternator: 24V, 20A
- Starting Motor: 24V, 1.8 kW
- Battery: 12V, 80Ah x 1
Fuel, Lubricating Oil, and Coolant
- Fuel: 35 Liter (9.2 US gallon)
- Hydraulic Oil (tank): 35 Liter (9.2 US gallon)
- Hydraulic Oil (total): 55 Liter (14.5 US gallon)
- Engine Oil (minimum): ?
- Engine Oil (maximum): 7.3 Liter (1.9 US gallon)
- Coolant: 3.85 Liter (1.0 US gallon)
OEM Working Range

Recorded Dimensions
- Transport Length: 4,710 mm (15'5")
- Transport Width: 1,450 mm (4'9")
- Transport Height: 2,435 mm (8'0")
- Backfill Blade Width: 1,450 mm (4'9")
- Backfill Blade Height: 280 mm (0'11")
- Bucket Width: 420 mm (1'5")
- Thumb Width: 235 mm (0'9")
- Track Width: 300 mm (1'0")
- Track Length: 1,940 mm (6'4")
- Track Standard: 300mm (W) x 52.5mm (P) x 78 or 80 (L)
- Boom Cylinder: 560 mm (22.0")
- Arm Cylinder: 500 mm (19.7")
- Bucket Cylinder: 500 mm (19.7")
- Thumb Cylinder: 285 mm (11.2")
OEM Dimensions

OEM Lifting Capacities
