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MAIN MANIFOLD VALVE (7-88-00074)
This results in the "reversed" scrub brush direction of rotation.
RV1
This poppet style relief valve limits the pressure of the bypass oil leaving FR1 (may be measured at
port "1"). If serves to protect the auxiliary pump, main broom motor, dust control motor, and scrub
motors. (P/N 7-12-02002)
Under normal operation, oil pressure remains below 2,500 PSI at port "1" and RV1 remains closed.
When 2,500 PSI is achieved at port "1", RV1 opens and permits oil to flow directly to port "T1" and
back to tank. This condition will typically occur under the following conditions: the main broom or
scrub brushes are stalled against as obstruction, the hopper dump door is opened or closed com
pletely, the hopper is raised to the maximum height, or the hopper is loaded above its rated capacity.
T1
P1
P
1-18
1
C1739
C1739
4
2
HDC
American-Lincoln Technology
ATS 46/53 Troubleshooting Guide
3
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Troubleshooting
