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T
Tank
2
Loader Valve
2X
Pressure Test Points
4
Check Valve (2 bar)
8
Drive Control Joystick
8a
Joystick Control Spool
8b
Joystick Control Spool
8c
Joystick Control Spool
8d
Joystick Control Spool
8e
Shuttle Valves
9
Pressure Reducing Solenoid Valve
10
Filter By-pass & Cooler Relief Valve
Hydraulics
9803/8500
Issue 1
Key
C
Cooler
F1
Filter
P1
Main Pump
P2
Main Pump
P3
Auxiliary Gear Pump
Pa
Charge Valve
Pb
Pressure Relief Valve
Pc
Pressure Relief Valve
Pd
Pressure Relief Valve
Pe
Pressure Relief Valve
M1
Right Hand Drive Motor
M2
Left Hand Drive Motor
S1
Suction Strainer
8 - 1
8 - 1
Descriptions
Section E
Section E
4
M1
P1
P2
M2
P3
8
T
S1
C
2X
F1
2X
10
2
Pa
Pb
Pc
Pd
Pe
8a
8b 8c
8d
8e
x
y
9
z
S242300
TRANSMISSION OPERATION - NEUTRAL
With the engine running but no drive selected, oil
from pump
P3
is fed through the loader valve
2
and
filter
F1
to main pumps
P1
and
P2
. A small amount
of oil flows through the chargel valve
Pa
, enters the
pump casing and is returned via line
z
and through
check valve
4
to the suction side of pump
P3
.
Oil is also fed from pump
P3
to the transmission
servo joystick
8
but, because the joystick is not
operated, the oil is blocked by the spools
8a
,
8b
,
8c
and
8d
and therefore no servo pressure is applied
to operate the swash plates of pumps
P1
and
P2
.
As the pump swash plates are spring loaded to the
neutral position there is no delivery from either
pump and the machine remains stationary.
The motor brakes
x
and
y
are released whenever
the engine is running by oil fed through the pressure
reducing valve
9
. However the machine is prevent-
ed from moving by oil locked up in the pump/motor
circuit.
Summary of Contents for ROBOT 150
Page 2: ......
Page 21: ...5 2 Safety Decals cont d Section 2 Care and Safety 9803 8500 Section 2 5 2 Issue 2...
Page 77: ...Attachments Section A Section A 7 7 9803 8500 Issue 1 Backhoe...
Page 97: ...4 3 Section C Electrics 9803 8500 Section C 4 3 Issue 1 Alternator S213570...
Page 123: ...1 1 Section D Controls 9803 8500 Section D 1 1 Issue 1 Safety Restraint Bar S168160 1...
Page 125: ...2 1 Section D Controls 9803 8500 Section D 2 1 Issue 1 Throttle Controls S168150D...
Page 142: ...Hydraulics 9803 8500 Issue 1 4 1 4 1 Descriptions Section E Section E...
Page 145: ...Hydraulics 9803 8500 Issue 2 5 2 5 2 Descriptions Section E Section E...
Page 146: ...Hydraulics 9803 8500 Issue 2 5 3 5 3 Descriptions Section E Section E...
Page 149: ...Hydraulics 9803 8500 Issue 2 5 6 5 6 Descriptions Section E Section E...
Page 152: ...Hydraulics 9803 8500 Issue 1 5 9 5 9 Descriptions Section E Section E...
Page 163: ...10 1 Section E Hydraulics 9803 8500 Section E 10 1 Issue 1 Pumps 168150...
Page 165: ...10 3 Section E Hydraulics 9803 8500 Section E 10 3 Issue 1 Pumps 168030...
Page 167: ...10 5 Section E Hydraulics 9803 8500 Section E 10 5 Issue 1 Pumps 168160...
Page 175: ...11 1 Section E Hydraulics 9803 8500 Section E 11 1 Issue 2 Pumps 167750...
Page 179: ...13 1 Section E Hydraulics 9803 8500 Section E 13 1 Issue 1 Drive Motors 167720 S167720A...
Page 183: ...13 5 Section E Hydraulics 9803 8500 Section E 13 5 Issue 1 Drive Motors S243720 X X S243870...
Page 212: ...18 1 Section E Hydraulics 9803 8500 Section E 18 1 Issue 2 Valves S204980 X X 3 B A 4 2 1 5...
Page 215: ...20 1 Section E Hydraulics 9803 8500 Section E 20 1 Issue 1 Servo Joysticks S167960...
Page 217: ...20 3 Section E Hydraulics 9803 8500 Section E 20 3 Issue 1 Servo Joysticks 167950...
Page 221: ...23 3 Section E Hydraulics 9803 8500 Section E 23 3 Issue 1 Rams S167800...
Page 241: ...1 2 Section F Transmission 9803 8500 Section F 1 2 Issue 2 Tyres and Wheels 167861 167811...
Page 243: ...1 4 Section F Transmission 9803 8500 Section F 1 4 Issue 2 Tyres and Wheels 167851...
Page 253: ...2 1 Section K Engine 9803 8500 Section K 2 1 Issue 1 Removal and Replacement S167990...