Citytrac 4200
Citymaster 1200
Citycleaner
Service Documents
For internal use only
Status
March 2009
Page
101 of 108
A control PCB, supplied as a spare part, is preconfigured. Therefore, readjustment should not be necessary. If the results of
spreading are not satisfactory and the cause of the error appears to be the setting on the PCB, a readjustment can be made. The
aim of this readjustment is to set the min. (4 l/min) and max.(20 l/min) flow rate for the spreader.
Procedure
1) Jack up the device on one side.
2) Connect the test plug 01144380 to the front attachment device connector X63.
3) Switch on the differential lock.
4) Allow the device to run forwards, set the speed on the mileometer to 12 kph (
ATTENTION
only drive for a short time otherwise the
hydraulic system could be damaged
!
)
5) Measure the voltage between A3 PIN4 and A3 PIN8
(the set value is 5.8 V)
6) Mount the jumper on the rear attachment device connector X60 PIN3 on PIN12
7) Measure the voltage between A3 PIN4 and A3 PIN8 again. The value should be identical to the previous one.
8) If the values are not identical, readjust using the trimming potentiometer
P1
.
9) Measure the voltage between A3 PIN11 and A3 PIN8 => 5.8 V (set value)
10) If the values are not identical (5.8 V), readjust using the trimming potentiometer
P2
.
11) Turn the trimming potentiometer
P3
anticlockwise as far as possible.
12) Turn the spreader adjusting potentiometer R13 (driver's cab) anticlockwise as far as possible (min. setting).
13) Measure the current between A3 PIN14 and A3 PIN15.
14) Adjust the current value using trimming potentiometer
P4
so that valve Y5 feeds
4 l/min
(current value measured approx. 780 mA).
15) Turn the spreader adjusting potentiometer R13 (driver's cab) clockwise as far as possible (max. setting).
16) Measure the current between A3 PIN14 and A3 PIN15.
17) Adjust the current value using trimming potentiometer
P5
so that valve Y5 feeds
20 l/min
(current value measured approx. 1060 mA).
The adjustment is thus complete.
ATTENTION
Disconnect the test plug from test connector X63 and the jumper on X60
!
