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MI1179-1
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Parameter
Description
L
Machine pin
Last 8 digit
Machine serial number
Engine
Figure 2.
Table 3.
Model
Engine Type
Power
3DX Xtra
JCB Engine 4.8
56kW at
2200 rpm
3DX Super JCB Engine 4.4 T
68.6kW at
2200 rpm
4DX
JCB Engine 4.4 T
68.6kW at
2200 rpm
3DX Xtra engine is same as 3DX standard engine
PMS is installed in 3DX Xtra machine, the
advantages are given below.
1
Managing the hydraulic horse power versus
available engine horse power
2
P2 flow dump will be controlled by PMS
3
Better fuel efficiency
Table 4.
Model
Idle Speed Hand
Throttle
Speed
Foot
Throttle
(Max.)
3DX Xtra
950-1000
rpm
1550 ± 50 2200
3DX Super 950-1000
rpm
1750 ± 50 2200
4DX
950-1000
rpm
1750 ± 50 2200
Hydraulic System
Hydraulic circuit is different form Standard 3DX
machine and hydro control make valve blocks are
used in all the variants.
•
Pressure sensor in 3DX Xtra hydraulic circuit
•
In-build pressure reducing valve for servo
operated machine
•
Sandwich valve blocks
Pump
Table 5.
Model P1
Flow
P2
Flow
P1
Pres-
sure
P2
Pres-
sure
Servo
Pres-
sure
3DX
Xtra
29 cc 29cc
250
Bar
225
Bar
40 Bar
3DX Su-
per
33 cc 21 cc 227
Bar
207
Bar
40 Bar
4DX
37 cc 33 cc 227
Bar
207
Bar
40 Bar
Valve Block (Servo)
Figure 3. Excavator Valve Block Servo Machine
C
B
B
A
A
Hydro clamp solenoid valve
B
Servo hose (Slew / Boom / Dipper / Bucket)
C
Manual operated (Cable) for stabilizers spool
•
Non- Servo LVB and EVB operations are similar
to Standard 3DX machine.
•
ARV (Auxiliary Relief Valve)- Refer to the
Service manual.
