14 - 11
Checking the Joystick Hydraulic Lines
If the machine does not respond to joystick movements,
check the hydraulic supply to and from the joystick as follows:
!
!
WARNING
The following procedure requires the machine to be
disabled (wheels raised off the ground, work function
disconnected etc.) while the work is carried out.
HYD 8-1/1
1
Raise and block the machine so that the wheels are clear
of the ground. Stop the engine. Make sure the machine is
stable.
2
Remove the seat and floorplate to access the hose
connections
A
and
B
.
3
Insert a tee piece and 0 - 40 bar (0 - 600 lb/in
2
, 0 - 42
kg/cm
2
) pressure gauge as shown at
X
into the supply
hose at the pressure reducing solenoid valve at position
A
.
4
Start the engine and observe the gauge reading which
should show the main pump charge pressure (see
Hydraulics Technical Data).
Section E
Hydraulics
9803/8500
Section E
14 - 11
Issue 1
Problem Solving
5
If the gauge shows no or little pressure it could indicate a
fault in the charge pressure relief valve in the hydrostatic
pump or the pressure reducing solenoid valve
C
.
6
If the supply pressure is correct, check the feed hose to
the joystick for blockage.
7
Remove the tee piece and gauge and connect into each
servo feed line in turn, at positions
B
.
8
Start the engine and move the joystick lever to pressurise
the relevant hose. The lever should be moved in the
direction of the appropriate hose.
9
Compare the pressure gauge readings with the figures
shown in Hydraulics Technical Data -
Joystick Output
Characteristics
.
10
If any readings are not correct, check the hoses for
blockage. If the hoses are clear the joystick should be
dismantled for repair.
X
B
B
B
B
B
B
B
B
A
A
C
C
325380
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...