1W6451 LINE AS-FUEL INJECTION Caterpillar parts
3412, 3412C, 3412D
Rating:
Alternative (cross code) number:
CA1W6451
1W-6451
1W6451
CA1W6451
1W-6451
1W6451
Weight: 1 pounds 0 kg.
GEN SET ENGINE, MARINE ENGINE,
Compatible equipment models: 1W6451:
Information:
Illustration 1 g03707297
Implement pump (parts removed for clarity)
(1) Implement pump
(2) Case drain port
(3) Pump inlet port
(4) Load sensing port
(5) Pump outlet port
(6) Pump control
Illustration 2 g03566443
Implement pump (section view)
(7) Barrel
(8) Swashplate
(9) Control valve
Illustration 3 g03566670
Pump control valve
(10) Load sensing spool
(11) Margin spring
(12) Adjustment screw The pump is a variable displacement piston pump with sensing for load limit control. The flow and pressure are dependent on the system demands that are sensed by the implement valve.The pump draws oil from the hydraulic tank. Oil flows from the implement pump to the main control valve. When the engine is off, the bias spring holds swashplate (8) at a maximum angle. The maximum angle allows the pump to produce flow when the engine is started.When the engine is started, the shaft starts to rotate. Oil flows into the piston bore from pump inlet port (3). Oil is forced out of pump outlet (5) and into the system as cylinder barrel (7) rotates.When the pump produces flow, the system pressure begins to increase because the oil flow is blocked at the main control valve. The increased pressure is felt at the top side of the load sensing spool (10). Pressure is also felt at the small end of actuator piston within the control valve. The load sensing spool (10) moves against margin spring (11). When no load sensing pressure exists at load sensing port (4), the spool will drain oil from the actuator piston to the case drain (2). This draining will occur until there is a pressure balance on load sensing spool. The pump will maintain this margin pressure by increasing or decreasing the volume of the pump as needed.When the pressure on the small side of actuator piston increases, the force of margin spring (11) is overcome. Swashplate (8) is moved to a minimum angle.The pump produces enough flow in order to compensate for normal system leakage when swashplate (8) is moved to a minimum angle. Also, the pump has sufficient pressure in order to provide instantaneous response when an implement command is activated.If there is no flow demand from an implement circuit, no load sensing signal is generated at load sensing port (4).
Caterpillar parts catalog:
Parts line Caterpillar catalog:
8N4206
LINE AS-FUEL INJECTION
3412, 651E, 657E, 773B, 992C
3412, 651E, 657E, 773B, 992C
8N4212
LINE AS-FUEL INJECTION
3412, 651E, 657E, 773B, 992C
3412, 651E, 657E, 773B, 992C
8N4202
LINE AS-FUEL INJECTION
3412, 651E, 657E, 773B, 992C
3412, 651E, 657E, 773B, 992C
8N4210
LINE AS-FUEL INJECTION
3412, 651E, 657E, 773B, 992C
3412, 651E, 657E, 773B, 992C
8N4204
LINE AS-FUEL INJECTION
3412, 651E, 657E, 773B, 992C
3412, 651E, 657E, 773B, 992C
6I0031
LINE AS-FUEL INJECTION
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
6I0032
LINE AS-FUEL INJECTION
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
6I0033
LINE AS-FUEL INJECTION
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
6I0034
LINE AS-FUEL INJECTION
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
6I0036
LINE AS-FUEL INJECTION
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
6I0038
LINE AS-FUEL INJECTION
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
1245945
LINE AS-FUEL INJECTION
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
3408, 3408C, 3412, 3412C, 589, 631E, 637E, 657E, 769C, 771C, 834B, 988B, 988F, D9R, PM-565, PR-450, PR-450C
9N3970
LINE AS-FUEL INJECTION
3408, 3412, 637D, 651E, 657E, 773B, 834B, 992C
3408, 3412, 637D, 651E, 657E, 773B, 834B, 992C
1W6457
LINE AS-FUEL INJECTION
3412, 3412C, 3412D
3412, 3412C, 3412D
1W6456
LINE AS-FUEL INJECTION
3412, 3412C, 3412D
3412, 3412C, 3412D
1W6455
LINE AS-FUEL INJECTION
3412, 3412C, 3412D
3412, 3412C, 3412D
1W6454
LINE AS-FUEL INJECTION
3412, 3412C, 3412D
3412, 3412C, 3412D
1W6453
LINE AS-FUEL INJECTION
3412, 3412C, 3412D
3412, 3412C, 3412D
1W6452
LINE AS-FUEL INJECTION
3412, 3412C, 3412D
3412, 3412C, 3412D