Troubleshooting 41
7 PIN C0NNECTOR
4
3 2
56 71
4
3
2
6
7
1
5
SOCKET (5)
SOCKET (6)
SOCKET (7)
SOCKET (1)
PIN (4)
PIN (2)
PIN (3)
PLUG
RECEPTICAL
SOCKET (4)
SOCKET (3)
SOCKET (2)
PIN (1)
PIN (7)
PIN (6)
PIN (5)
DWG. NO. 3131
10 PIN CONNECTOR
PLUG
RECEPTICAL
PIN (3)
PIN (4)
PIN (10)
PIN (5)
PIN (6)
SOCKET (7)
SOCKET (8)
SOCKET (1)
SOCKET (2)
SOCKET (9)
7
9
2
8
1
6
5
4
3
10
SOCKET (3)
4
SOCKET (3)
3
10
SOCKET (10)
SOCKET (5)
5
6
SOCKET (6)
7
PIN (7)
PIN (8)
PIN (9)
PIN (1)
PIN (2)
1
9
2
8
DWG. NO. 3132
SPEED SENSOR TROUBLESHOOTING
Check the distance calibration factor and boom
widths. Make sure the controller is not in HOLD.
Select DISTANCE on the controller then drive. The
display for distance should be counting up.
To check the controller set your pulses per gallon
number to 1, and plug the speed sensor into the
input marked FLOW. Drive again, if the GALLONS
counts up, the problem is the console. Alternately
the Flowmeter can be plugged into the SPEED in-
put to verify the speed input works properly. While
spraying the distance should count up.
To check the wiring, see wiring troubleshooting or
substitute any three conductor cable for the speed
cable. The Flowmeter cable is commonly used.
To check a hub plate installation first:
Check installation on the speed sensor. The Sensor
and bracket should be mounted very rigid. The Sen-
sor should be mounted through the holding bracket
at least 1/2 inch. The Sensor end should be no fur-
ther away from sensing plate tabs than 1/4 inch. If
one tab is bent so it is more than 1/4 inch away from
the face of the sensor, the 8605 SPEED or RATE
readout may fluctuate. On a hard surface road while
traveling at a constant speed the 8605 MPH should
not vary by more than two tenths of a MPH. A loose
wheel bearing could also cause fluctuating read-
outs.
The speed sensor can also be checked by the Con-
troller. Program your distance calibration number to
1.00 (one) and select and clear distance by pressing
DIST key for three seconds. Put console into RUN.
Now each time metal passes in front of the sensor
the feet on the display will count up. If you drive one
revolution of the distance wheel with a standard hub
plate, the distance count should indicate 14 as a
standard hub plate has 14 metal tabs on it.
In a “ground speed radar installation” check to see if
the “tractor dash speed” reading is working correct-
ly. With the Hiniker interface removed the “tractor
speed” must work. If you have determined the radar
is working a new radar interface and / or adapter
may be substituted to locate the problem.
FLOWMETER TROUBLESHOOTING
The flowmeter is a very important component in the
8605 system. If the flowmeter is not functioning prop-
erly, it will have an adverse effect on the operation of
the controller. Rate Per Acre, Total Volume, Percent
Error, and Volume Per Minute will all be inaccurate
if the flowmeter is not functioning properly.
1. Make sure the controller is not in “HOLD”.
2. Check the controller calibration pulses per gal-
lon against the number on the flowmeter, re-
member the decimal point is one digit from the
right.
3. Check flowmeter cables and connectors, refer-
ence the cable, and connector troubleshooting
section.
4. Check flowmeter installation. Make sure
flowmeter is mounted in the line to the
booms and after any agitation or return lines.
Also make sure direction of flow (arrow on
flowmeter) is correct.
