17
Installation - Electronic Control Unit (ECU)
See Appendix A for a schematic of the cable connections.
1.
Install the ECU.
a.
Identify the ECU mounting location on the cab
floor to the right of the driver’s seat.
Facing the one inch tabs of bracket
EJ
toward the
driver’s seat, align the bracket parallel to the seat
mounting box and with (Figure 1a):
• The front edge of the bracket in line with the
front face of the seat mounting box.
• The outer edge of the one inch tabs ½
”
from the
right face of the seat mounting box.
Using hardware
EL,
fasten the bracket to the cab
floor (Figure 1a). Use a small level (not shown) to
check the level of the bracket. Adjust accordingly.
Do not overtighten the self drilling screws. Over-
tightening could cause the fastener to fail.
b.
Using hardware
EM
(not visible) attach the ECU
EI
to bracket
EJ
. Have the power and communica-
tions indicators at the top (Figure 1b left) and the
wire connections toward the rear of the machine
(Figure 1b right).
2.
Assemble and install the cables.
On a clean surface, lay out all the cables and
become familiar with the connections and where
they are to be placed. See Appendix A.
Route all cables with other machine cabling,
plumbing or fixtures free from entanglement and
secured with heavy tie straps HY.
a.
Connect cable
EA
to the ECU
EI
using an Allen
wrench to secure the cable to the ECU. The
EA
connector will only fit the ECU socket that is in line
with the power and communications indicators at
the opposite end of the ECU - so the top socket in
this installation (Figure 2a).
b.
Connect steering controller cable
EC
’s
two 12-pin
connectors (black and gray) to their respective
sockets on the steering controller
HI
(Figure 2b).
c.
Connect
EC
’s connector labeled ‘VALVE’ to valve
cable
ED
. Connect
ED
’s three 2-pin connectors
(labeled ‘LEFT’, ‘RIGHT’ and ‘ENABLE’) to the
enable valve and two solenoid valves on the
hydraulic steering block (Figure 2b).
Figure 1a: ECU mounting bracket installed
Figure 1b: ECU installed
Figure 2a: ECU main cable installed (in top
socket)
Figure 2b: Steering controller main cable and
‘VALVE’ cable installed
1/2
”
EL (4)
EJ
(EM - 4)
Indicators
EI
EA
ED (L, R &
ENABLE
solenoids)
EC
HI