22-322-3TX / TXH / TXB 180S - 400L (Rev. 4/23/07)TX / TXH / TXB 180S - 400L (Rev. 4/23/07)
OO
PARKING BRAKE SOLENOIDPARKING BRAKE SOLENOID
PBPB
RV1RV1
RV3RV3
P3P3
ACC2ACC2
Illustration 22-2. Illustration 22-2. Manifold Manifold (Engine (Engine Side)Side)
PBPB- (Parking Brake) Supply connection to the- (Parking Brake) Supply connection to the
parking brake chamber.parking brake chamber.
CoolCool - (Service brake cooling) Cooling fluid supply- (Service brake cooling) Cooling fluid supply
to one of the service brake.to one of the service brake.
CK1CK1 - (Check Valve) Isolates higher brake pres-- (Check Valve) Isolates higher brake pres-
sure circuits from lower pump pressure.sure circuits from lower pump pressure.
P3P3 - (Auxiliary Pump Port) Supply connection from- (Auxiliary Pump Port) Supply connection from
primary pump.primary pump.
ACC2ACC2 - (Accumulator Port) Service brake accumu-- (Accumulator Port) Service brake accumu-
lator supply.lator supply.
RV3RV3- (Pressure Relief) Thermal relief for ACC2- (Pressure Relief) Thermal relief for ACC2
accumulator.accumulator.
RV1RV1 - (Pressure Relief) Primary pump relief- (Pressure Relief) Primary pump relief
Parking Brake SolenoidParking Brake Solenoid- Controls parking brake- Controls parking brake
apply / release.apply / release.
OO- (Orbitrol Port) Supply port to steering orbitrol.- (Orbitrol Port) Supply port to steering orbitrol.
PRV1PRV1
PPMPPM
RV2RV2
LC3LC3
LC2LC2
ORF3ORF3
Illustration 22-3. Illustration 22-3. Manifold Manifold (Mast (Mast Side)Side)
LC2LC2 - (Logic Control) Controls flow to steering.- (Logic Control) Controls flow to steering.
LC3LC3- (Logic Control) Controls flow to steering and- (Logic Control) Controls flow to steering and
hoist/tilt functions.hoist/tilt functions.
PRV1PRV1- (Pressure Reducer) Controls maximum- (Pressure Reducer) Controls maximum
pilot pressure.pilot pressure.
RV2RV2 - (Pressure Relief) Controls maximum steer- (Pressure Relief) Controls maximum steer
pressure.pressure.
PPMPPM- (Pilot pressure measure) Gauge port to- (Pilot pressure measure) Gauge port to
check pilot pressure.check pilot pressure.
ORF3ORF3- (Orifice #3) This orifice stabilizes the- (Orifice #3) This orifice stabilizes the
unloader valve (UNL1).unloader valve (UNL1).
Side IllustratedSide Illustrated
BB
PBMPBM
flow/pressure signals to the accumulator chargeflow/pressure signals to the accumulator charge
circuit. circuit. The The check check valves valves isolates isolates the the parking parking andand
service brake circuits from lower brake coolingservice brake circuits from lower brake cooling
pressures.pressures.
LC1LC1- (Logic Control Number one) Logic control- (Logic Control Number one) Logic control
for accumulator circuit.for accumulator circuit.
LSOLSO - (Load sense) Steering load sense connec-- (Load sense) Steering load sense connec-
tion from orbitrol.tion from orbitrol.
LSMLSM - (Load Sense Measure) Port for load sense- (Load Sense Measure) Port for load sense
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