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| Illustration 1 | g06266091 |
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Right Side of Machine (1) Charge filter (2) S·O·S tap (3) Bypass switch | |
Charge filter (1) is located in the compartment on the right side of the machine. The right side compartment door provides access to the filter.
Charge oil from the fan hydraulic system flows through charge filter (1). This oil is directed from the filter to the propel pump and the machine valve.
The housing of the charge filter contains a bypass valve. If the pressure differential across the filter is greater than
S·O·S tap (2) provides a means of obtaining oil samples upstream of the charge filter.
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| Illustration 2 | g06266093 |
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Rear of Machine (4) Back-up alarm | |
Back-up alarm (4) is at the right rear of the machine.
The engine ECM controls the signal to back-up alarm (4). The machine ECM sends a back-up alarm request to the engine ECM through CAN communication lines when the propel lever is in the reverse range.
A second identical back-up alarm (not shown) is on the front of the machine. When the operator station is facing the rear of the machine, this back-up alarm is activated when the propel lever is in the reverse range.
Note: When the operator station is facing rearward, the propel lever, back-up alarm, and turn signals recognize the new "front" of the machine and operate accordingly.
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| Illustration 3 | g06266096 |
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Operator Seat (5) Seat position switch "2" (6) Seat position switch "1" | |
The seat position switches are at the base of the operator seat. A removable panel provides access to these components. The seat position switches are proximity switches.
The machine ECM monitors the state of seat position switch "2" (5) and seat position switch "1" (6). Monitored input is used to determine the position of the operator's seat.
When seat position switch "1" (6) is closed and seat position switch "2" (5) is open, the machine ECM determines the seat is facing forward. When seat position switch "1" is open and seat position switch "2" is closed, the machine ECM determines the seat is facing rearward.
When both seat position switches are closed, the machine ECM determines that the seat is in a transitional position. When this happens, the propel and steering systems are temporarily disabled until one of the seat position switches is open.
When both seat position switches are open, the machine ECM logs a level - 3 fault and disables the propel and steering systems.
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| Illustration 4 | g06266098 |
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Operator Seat (7) Back-up alarm relay | |
Back-up alarm relay (7) is located in the fuse and relay bank on the left side of the machine. The door on the left side of the machine provides access to this component.
Back-up alarm relay (7) controls the power supply to the 360°-reverse relay. When the propel lever is moved to the reverse range, the engine ECM energizes the coil of this relay. When the relay is energized, power transfers to the gate of the 360°-reverse relay.
The 360°-reverse relay (not shown) determines which back-up alarm is activated when back-up alarm relay (7) is energized. The machine ECM determines which direction the operator seat is facing and sends a control signal to the 360°-reverse relay. When the 360°-reverse relay is energized, the front back-up alarm is operable. When the 360°-reverse relay is not energized, the rear back-up alarm is operable.
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| Illustration 5 | g06266113 |
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Rear of Machine (8) Return manifold | |
Return manifold (8) is at the rear of the pump compartment on the right side of the machine. The right side compartment door provides limited access to the manifold.
Return manifold (8) receives return oil from the following hydraulic components:
- Propel pump case drain - Port "A"
- Case drain of rear propel motors - Port "C"
- Case drain of front propulsion motors - Port "E"
Port "B" of manifold (9) is the return line to oil cooler.