Alto ATS 46 Troubleshooting Manual page 17

CYLINDER CONTROL MANIFOLD VALVE (7-88-00069)
SV5 This 2-position, 3-way solenoid spool valve directs from SV1 or port "B". (P/N 7-12-02005)
When SV5 is not energized, oil is permitted to flow from port "C2" to port "T" while pressurized oil from
SV1 (if the side broom is off) or port "B" (if the side broom is on) is blocked. In this condition, the
scrub deck may be in the RAISE or DOWN/FLOAT position.
When SV5 is energized, pressurized oil is directed from SV1 or port "B" to port "C2" while port "T" is
blocked. In this condition, the scrub deck is in the HEAVY DOWN position.
SV6 This 2-position, 2-way poppet solenoid valve controls return oil from port "C4" and serves as the
"squeegee lock valve". (P/N 7-12-02007)
When SV6 is not energized, oil may flow from SV4 to port "C4" but nor in the opposite direction, This
traps oil in the base end of the squeegee cylinder an maintains the raised position of the squeegee.
When SV6 is energized, oil may flow both directions between SV4 and port "C4". This allows oil
trapped in the base end of the scrub deck cylinder to return to tank through SV4 to port "T" which
lowers the squeegee (SV4 must also be de-energized).
CV1 This ball/spring style check valve receives the oil supplied at port "P". It maintains a minimum of 200
PSI at port "P" and provides a maximum pressure setting for the scrub deck and squeegee cylinders.
This valve also provides and limits the pressure for the HEAVY SCRUB position of the scrub deck.
(P/N 7-12-02008)
P
T
1-16
A
B
C1740/9706
C1
C2
C3
C1740
C4
American-Lincoln Technology
ATS 46/53 Troubleshooting Guide