2507319 ENGINE AR-COMPLETE Caterpillar parts
C7
Rating:
Alternative (cross code) number:
CA2507319
250-7319
2507319
CA2507319
250-7319
2507319
TRUCK ENGINE,
Compatible equipment models: 2507319:
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Information:
The kickouts on the 931B use reed switches which are activated or deactivated by a magnet. The circuit which is made or broken by the reed switches controls the operation of a 6S7255 Solid State Switch (contains transistors; no moving parts). When the solid state switch is activated, it sends current to the coil of an electromagnet. The electromagnet causes the bucket control lever to be held in RAISE or TILT position. When the electromagnet is not activated, springs cause the control lever to "kickout" and go to the HOLD position.
Figure 10. Bucket Positioner Circuit5S7255 Solid State Switch Assembly
The 5S7255 Solid State Switch Assembly is not serviced. If it does not work correctly, it must be replaced. The reed switches and their magnets which control the operation of the solid state switch are serviced separately.The solid state switch has a switching transistor and a power transistor. The power transistor controls the electromagnet. When it is turned on, it makes a circuit for the current flow through the electromagnet. The switching transistor controls the power transistor. When the switching transistor is turned on, it sends current to the base of the power transistor to turn it on. The switching transistor is controlled by the external circuit, connected to its base, that has the reed switches. When the external circuit connected to the base of the switching transistor is continuous to ground, the switching transistor is turned on (and therefore the electromagnet). When the external circuit is open (not continuous to ground), the switching transistor (and therefore the electromagnet) is turned off.The solid state switch has two spade terminals on the top of it. One terminal is marked FUSE. The P/W wire that connects to this terminal supplies current to the solid state switch for the electromagnet. The other spade terminal is marked SWITCH. The P/DK BL wire that connects to this terminal is the external circuit that has the reed switches and controls the solid state switch. The brass inserts around the mounting holes are the ground connection for the circuit, through the mounting bolts. The black wire connects here. The wires with the two connection bullet connector, connect to and make the electrical circuit for the electromagnet.
Figure 11. Solid State SwitchLift Kickout
When the bucket lift lever is put in the RAISE position, it stays in this position until the bucket reaches a pre-set height. Then the "KICKOUT" function causes the lever to move out of the RAISE position to the HOLD position.The lever is held in the RAISE position by an electromagnet which holds a metal plate on the lever. Power is sent to activate the electromagnet by the 5S7255 Solid State Switch. The solid state switch is activated when the external control circuit that is connected to the SWITCH connection, on the solid state switch, is continuous to ground. For the LIFT KICKOUT function, there are two reed switches in the external control circuit that determine if the circuit is continuous to ground. There is one reed
Figure 10. Bucket Positioner Circuit5S7255 Solid State Switch Assembly
The 5S7255 Solid State Switch Assembly is not serviced. If it does not work correctly, it must be replaced. The reed switches and their magnets which control the operation of the solid state switch are serviced separately.The solid state switch has a switching transistor and a power transistor. The power transistor controls the electromagnet. When it is turned on, it makes a circuit for the current flow through the electromagnet. The switching transistor controls the power transistor. When the switching transistor is turned on, it sends current to the base of the power transistor to turn it on. The switching transistor is controlled by the external circuit, connected to its base, that has the reed switches. When the external circuit connected to the base of the switching transistor is continuous to ground, the switching transistor is turned on (and therefore the electromagnet). When the external circuit is open (not continuous to ground), the switching transistor (and therefore the electromagnet) is turned off.The solid state switch has two spade terminals on the top of it. One terminal is marked FUSE. The P/W wire that connects to this terminal supplies current to the solid state switch for the electromagnet. The other spade terminal is marked SWITCH. The P/DK BL wire that connects to this terminal is the external circuit that has the reed switches and controls the solid state switch. The brass inserts around the mounting holes are the ground connection for the circuit, through the mounting bolts. The black wire connects here. The wires with the two connection bullet connector, connect to and make the electrical circuit for the electromagnet.
Figure 11. Solid State SwitchLift Kickout
When the bucket lift lever is put in the RAISE position, it stays in this position until the bucket reaches a pre-set height. Then the "KICKOUT" function causes the lever to move out of the RAISE position to the HOLD position.The lever is held in the RAISE position by an electromagnet which holds a metal plate on the lever. Power is sent to activate the electromagnet by the 5S7255 Solid State Switch. The solid state switch is activated when the external control circuit that is connected to the SWITCH connection, on the solid state switch, is continuous to ground. For the LIFT KICKOUT function, there are two reed switches in the external control circuit that determine if the circuit is continuous to ground. There is one reed