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 : 1
Rated gross horse power ( SAE J1995)
48.3 kW
(
65.7 Hp
) at
2200 RPM
Maximum torque at
1560 RPM
235.4 N·m
(
173.6 lb ft
)
Engine oil quantity
11.6 L
(
3.1 US gal
)
Dry weight
270 kg
(
595 lb
)
High idling speed
2500 – 2600 RPM
Low idling speed
950 – 1050 RPM
Rated fuel consumption
170 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 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
55 L/min
(
14.5 US gpm
)
Rated speed
2000 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 – 2965 kPa
(
3130 – 430 psi
)
Rated oil flow
36.6 – 9 L/min
(
9.7 – 2.4 US gpm
)
Main control valve
Type
Sectional, 10 spools and 1 option
Operating method
Hydraulic pilot system, mechanical control system
Main relief valve pressure
21581 kPa
(
3130 psi
)
Overload relief valve pressure
23511 kPa
(
3410 psi
)
51452136 23/07/2018
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