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| Illustration 1 | g03409346 |
Right Side of Machine (1) S·O·S tap (2) Charge filter (3) Charge bypass switch | |
Charge filter (2) is located under the operator platform, on the right side of the machine.
Charge oil from the fan hydraulic system flows through charge filter (2). This oil is directed from the filter to the following locations:
- Vibratory pump
- Propel pump
- Shift valve
The housing of the charge filter contains a bypass valve. If the pressure differential across the filter is greater than 280 kPa (41 psi), charge bypass switch (3) closes. When this valve closes, the machine ECM number one logs a level 2 fault. The machine ECM number one then flashes an amber light on the operator display to alert the operator of a clogged filter. If the pressure differential across the filter is greater than 350 kPa (51 psi), the bypass valve opens. When the bypass valve opens, charge oil flows directly to the pumps and shift valve.
S·O·S tap (1) provides a means of measuring hydraulic pressure and obtaining oil samples upstream of the charge filter.
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| Illustration 2 | g03409348 |
Front of Machine (4) Cooling package | |
Cooling package (4) is located at the front of the machine. The hydraulic oil cooler is contained within the cooling package.
The return manifold (not shown) combines the case drain oil from the main hydraulic pump, the vibratory motors, and the propel motors. Oil from the return manifold is directed into the inlet port of the hydraulic oil cooler. The outlet port of the hydraulic oil cooler is connected to the hydraulic tank.
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| Illustration 3 | g03409350 |
Rear of Machine (5) Rear backup alarm | |
Rear backup alarm (5) is located at the rear of the machine, behind the water tank.
The engine ECM controls the signal to the rear backup alarm (5). The machine ECM number one sends a backup alarm request to the engine ECM when the propel lever is in the reverse range.
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| Illustration 4 | g03409351 |
Left Side of Machine (6) Back up alarm relay | |
Back up alarm relay (6) is located in the electrical panel on the left side of the machine. The door on the left side of the machine provides access to this component. Cover plates (removed in photo) provide access to components in the electrical panels. A decal on the inside of the cover plate identifies each component on the electrical panel.
Back up alarm relay (6) activates the rear backup alarm when the propel lever is moved to the reverse range. In this case, the machine ECM number one sends a request to the engine ECM via the CAN. The engine ECM energizes the coil of the backup alarm relay. The relay transfers power from the propel/steer fuse to the backup alarm.
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| Illustration 5 | g03409352 |
Under Operator Platform on Right Side of Machine (7) Return manifold | |
Return manifold (7) is located under the pump stack, on the right side of the machine. The ports of the manifold are marked for identification. Port "B" of the return manifold is connected to the oil cooler.
Return manifold (7) receives return oil from the following hydraulic components:
- Main hydraulic pump case drain port "A"
- Rear propel motor case drain and rear vibratory motor case drain port "C"
- Front vibratory motor case drain port "D"
- Front propel motor case drain port "E"