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WSM Minor Change II Service Engineering Section
e. Initial settings of the knob
1. Set-up and adjustment of service port
This new finger control service port system requires three types of set-up and adjustment proce-
dures.
2. Purpose
Three settings (right and left ends, and neutral) of the knob are kept in the meter controller’s mem-
ory. Note that there are fluctuations from knob to knob.
The knob has been factory-set at Hirakata Factory or KBM. When the meter, the knob or the pro-
portional control solenoid valve has been replaced, the knob settings must be manually repro-
grammed. If not reprogrammed, the thumb may get activated even in neutral or slowly move even
at the right end.
The meter memory keeps the following data in the EEPROM addresses
1023
u 8 = 8184 then 5 V.
But actual data varies as follows.
<Knob shift amount and output voltage>
Items to set-up When
Knob initial set-up 1. Knob change
2. S/P valve change
3. Meter panel change
S/P valve start-point set-up 1. S/P valve change
2. Main control valve change
3. Pilot pump change
4. Hydraulic actuator change
Manual feeling adjustment 1. Hydraulic actuator change
2. Operator change and feeling change
Address 45: Left end
o
0.4 a 0.8 V
Address 46: Neutral
o
2.4 a 2.8 V
Address 47: Right end
o
4.40 a 4.80 V
Left end Right end
Knob shift amount
(Knob shift angle)
2.5 V (Address 46)
0.5 V (Address 45)
4.5 V (Address 47)
Voltage
Neutral
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