Komatsu Workshop Service Manual PC20R-8,PC25R-8,PC27R-8
This Covers and contains the following 3 manuals
1. Komatsu 68E through 88E engine service manual
2. Komatsu PC20R-8, PC25R-8, PC27R-8 shop manual
3. Komatsu PC27R-8 operation and maintenance manual.
Komatsu 68E-88E series engine service manual. This manual covers the following models.
2D68E, 3D68E, 3D74E, 3D78AE, 3D62AE, 3D82E, 3D84E, 3D88E, 4D84E, 4D82E, 4D88E, S3D84E, S4D84E.
This is a high-quality workshop manual which covers all aspects of engine rebuilding.
The PC20R-8 uses 3D74E-3
The PC25R-8 and PC27R-8 both use the 3D82E-3 engine.
Komatsu PC20R-8 PC25R-8 PC27R-8 Workshop Service Manual
Komatsu PC20R-8, PC25R-8, PC27R-8 shop manual. This is the factory workshop manual
PC20R-8 10001 and up
PC25R-8 10001 and up
PC27R-8 10001 and up
Komatsu PC27R-8 operation and maintenance manual. This is the factory O & M manual
SERIAL NUMBERS PC27R-8 F31103 and up.
Engine
Make Komatsu
Model 3D78AE-3FA
Gross Power 26.7 hp 19.9 kw
Net Power 23.3 hp 17.4 kw
Power Measured @ 2600 rpm
Displacement 73.5 cu in (1.2 l) 1.2 L
Torque Measured @ 1600 rpm
Max Torque 53.5 lb (ca. 24 kg) ft 72.5 Nm
Number of Cylinders 3
Aspiration Natural
Operational
Operating Weight, 5588.7 lb (2.53 t) 2535 kg
Fuel Capacity 9.2 gal (ca. 35 l) (ca. 35 l) (ca. 35 l) (ca. 35 l) (ca. 35 l) (ca. 35 l) 35 L
Cooling System Fluid Capacity 1.1 gal (ca. 4 l) 4 L
Hydraulic System Fluid Capacity 7.7 gal (ca. 29 l) (ca. 29 l) 29 L
Engine Oil Capacity 0.95 gal (3.6 l) (3.6 l) (3.6 l) (3.6 l) 3.6 L
Operating Voltage 12 V
Alternator Supplied Amperage 40 amps
Hydraulic System Relief Valve Pressure 3045.8 psi 21000 PA
Hydraulic Pump Flow Capacity 15.7 gal (ca. 59 l)/min 59.6 L/min
Swing Mechanism
Swing Speed, 9 rpm
Undercarriage
Number of Shoes per Side, 38
Shoe Size 9.8 in 250 mm
Number of Track Rollers per Side 3
Ground Pressure 1.6 psi PA
Max Travel Speed 2.7 mph (4.35 km/h), 4.3 km/h
Track Gauge 3.7 ft (1.13 m) in 1120 mm.
