INTRODUCTION
Machine specifications
Engine
Model
Yanmar 4TNV98C
Type
4-cycle diesel engine, low emission
Cooling method
Water cooling
Number of cylinders and arrangement
4 cylinders, in-line
Firing order
1 - 3 - 4 - 2
Combustion chamber type
Direct injection type
Cylinder bore x stroke
98 mm
(
3.86 in
) x
110 mm
(
4.33 in
)
Piston displacement
3319 cm³
(
203 in³
)
Compression ratio
18.5 : 1
Rated gross horse power ( SAE J1995)
49.9 kW
(
67.8 Hp
) at
2400 RPM
Maximum torque at
1550 RPM
235.4 N·m
(
173.7 lb ft
)
Engine oil quantity
11.6 L
(
3.1 US gal
)
Dry weight
270 kg
(
595 lb
)
High idling speed
2300 – 2350 RPM
Low idling speed
900 – 1100 RPM
Rated fuel consumption
176 g/Hp·hr at
2400 RPM
Starting motor
12 V
,
3.0 kW
Alternator
12 V
,
100 A
Battery
1 x
12 V
x
100 A·h
Main pump
Type
Variable displacement tandem axis piston pumps
Capacity
2 x
27.5 cm³/rev
(
1.7 in³/rev
)
Maximum pressure
21581 kPa
(
3130 psi
)
Rated oil flow
2 x
57.8 L/min
(
15.3 US gpm
)
Rated speed
2100 RPM
Gear pump
Type
Fixed displacement gear pump single stage
Capacity
18.3 – 22.8 cm³/rev
(
1.1 – 0.3 in³/rev
)
Maximum pressure
21581 kPa
(
3130 psi
)
Rated oil flow
38.4 – 47.9 L/min
(
10.1 – 12.7 US gpm
)
Main control valve
Type
Sectional, 9 spools
Operating method
Hydraulic pilot system
Main relief valve pressure
21581 kPa
(
3130 psi
)
Overload relief valve pressure
23511 kPa
(
3410 psi
)
51452080 20/06/2018
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