HARNESS AS 1185268 - Caterpillar

Illustration 1 g06179954
Under Operator Platform
(1) Vibratory pumpVibratory pump (1) is located under the operator platform. This pump is driven by the engine. A panel on the rear of the machine provides access to this component.Vibratory pump (1) is a piston-type pump with variable displacement. The pump housing contains a single rotating group that provides flow to the vibratory manifold.
Illustration 2 g06179965
Vibratory Pump
(2) Vibratory solenoid "MA"
(3) Vibratory solenoid "MB"
(4) Port "X2"
(5) Port "X1"
(6) Port "G"
(7) Port "T2"
(8) Port "PS"
(9) Combination valve for port "B"
(10) Combination valve for port "A"
(11) Port "MB"
(12) Port "B"
(13) Port "A"
(14) Port "T1"Each port in the pump housing is identified by a numeric or an alpha-numeric designation which is cast into the housing next to the port. The function of each port is as follows:
Port "A" (13) - This port is a system port. Port "A" is connected to port "B1" of the machine valve. Oil flows out port "A" when vibratory solenoid "MB" (3) is energized.
Port "B" (12) - This port is a system port. Port "B" is connected to port "A1" of the machine valve. Oil flows out port "B" when vibratory solenoid "MA" (2) is energized.
Port "G" (6) - This port is the charge inlet port. Filtered charge oil is directed into port "G".
Port "MA" (not shown) - This port is a gauge port for the pressure at port "A". Port "MA" is plugged. System pressure can be measured on the machine valve.
Port "MB" (11) - This port is a gauge port for the pressure at port "B". Port "MB" is plugged. System pressure can be measured on the machine valve.
Port "PS" (8) - This port is plugged.
Port "T1" (14) - This port is a case drain port. Port "T1" directs oil to port "C" of the return manifold.
Port "T2" (7) - This port is a case drain port. Port "T2" is plugged.
Port "X1" (5) - This port is plugged. The pressure on one side of the servo piston can be measured at port "X1". This port is pressurized when the supply oil is directed out port "B" of the pump.
Port "X2" (4) - This port is plugged. The pressure on one side of the servo piston can be measured at port "X2". This port is pressurized when the supply oil is directed out port "A" of the pump.The direction control valve is equipped with two electrical proportional (EP) solenoids. Vibratory solenoid "MA" (2) controls flow out port "B" (12) of the pump. Vibratory solenoid "MB" (3) controls flow out port "A" (13) of the pump.The vibratory pump is equipped with two combination valves (9) and (10). Each combination valve contains a makeup and a relief valve. The relief valves limit the pressure in the circuit to 38000 2000 kPa (5500 290 psi). The makeup valves allow charge oil to flow into the low-pressure circuit to replenish the oil lost to internal leakage.
Illustration 3 g06179980
Vibratory Pump Cross Section
(15) Servo piston
(16) Drive shaft
(17) Swashplate
(18) Slipper pad
(19) Piston
(20) Barrel assembly
(21) Port plateEngine rotation turns pump