All Copyright and rights are the property of Johnston Sweepers Ltd
MA8:3
V Range 501
l
651
l
801 Maintenance Manual
Johnston Sweepers Limited
Chapter - Fault Diagnosis
Electrical System
Fault Symptom
Possible Cause
Beacon not working
1.
Check vehicle ignition is on
2.
Check
beacon
bulb/motor
3.
Check
feed
to
beacon
4.
Check
earth
wire
5.
Check fuse No. 1 for front. Fuse 2 for rear
6.
Check
switches
Work lights not working
1.
Check vehicle ignition is on, master switch V is illuminated
2.
Check
bulb
3.
Check
feed
to
light
4.
Check
earth
wire
5.
Check
fuse
No.
1
6.
Check
switch
Flap (duals) fail to operate
1.
Check feed to solenoid/Plug LED’s V11 or V12
2.
Check
solenoid
3.
Check
earth
wires
4.
Check
fuse
No.
4
5.
Check
switch
Nozzle fails to lower
1.
Check feed to solenoid/Plug LED V2 or V10
2.
Check
solenoid
3.
Check
earth
wires
4.
Check
fuse
No.
4
5.
Check
switch
Channel brush fails to lower
1.
Check feed to solenoid/Plug LED V4 or V10
2.
Check
solenoid
3.
Check
earth
wires
4.
Check
fuse
No.
4
5.
Check
switch
Channel brush fails to rotate
1.
Check feed to solenoids/Plug LED (see Modus Operandi)
2.
Check
solenoid
3.
Check
earth
wire
4.
Check
fuse
No.
4
5.
Check
switch
Channel brush water fails to operate
1.
Check feed to solenoid/Plug LED’s W03/W08
2.
Check
solenoid
for
operation/obstruction
3.
Check
earth
wire
4.
Check
fuse
No.
4
5.
Check
Wide
Sweep
Brush
hydraulic
Wide sweep fails to lower
1.
Check feed to solenoids/Plug LED’s V4
2.
Check
solenoid
3.
Check
earth
wire
4.
Check
fuse
No.
5
5.
Check
switch
Wide sweep fails to rotate
1.
Check feed to solenoid/Plug LED
2.
Check
coil
for
operation
3.
Check
earth
wire
4.
Check
fuse
No.
5
5.
Check
switch
Wide sweep water fails to operate
1.
Check feed to solenoid/Plug LED W01
2.
Check solenoid for operation/obstruction
3.
Check
earth
wire
4.
Check
fuse
No.
5
5.
Check
switch
Page Issue A
