Cat 312 swing brake solenoid. Low hydraulic pressure or a faulty solenoid can cause brake disengagement, allowing the upper structure to swing freely. Lever- and pedal-operated travel controls allow operator to work implement joysticks while moving machine, Monitor panel continually ihforms operator of machine status and houses most machine system controls. The swing brake solenoid is de-energized approximately 6. Pilot oil in line (4) flows to swing brake (1) . When traveling brake releases and when digging also. We have a cat 312bl currently running in manual First problem the swing brake wouldn't release , using the override switch at back of the armrest, display blanks out as slew turns. We sell a wide range of new aftermarket, used and rebuilt 312 replacement parts to get your machine back up and running quickly. The document contains illustrations and descriptions of a hydraulic schematic for the swing function of an excavator. It is Solenoid - Swing Brake Cancel A-9 124 GN A/C C537 GN A/C Photo Sensor +Signal Joystick H-1 7B Solenoid - Thumb Close A-4 D grounded by being fastened to the machine. Purchase all the necessary parts and tools to service your machine! Feb 5, 2011 · I think the line coming from the valve stack should be the pilot switching signal for the swing brake, not the line from the solenoid valve. The swing brake solenoid is not functioning properly. Caterpillar 312E Excavator workshop service repair manual includes: * Numbered table of contents easy to use so that you can find the information you need fast. Apr 11, 2013 · nhtca99 New Member Joined Aug 11, 2014 Messages 3 Location Australia Aug 11, 2014 #23 electrical schematic for 312CL Hi all, I have trouble with swing brake on CAT 312CL. You can test the switch with an ohm meter. Check the swing brake adjustment and inspect the brake lining for wear or contamination. Cat312C. new aftermarket excavators,wheel loaders,bulldozers,backhoes,skid steer loaders ect. A locked left track and no swing movement on a Cat 312B typically indicate hydraulic issues. On a 315 it’s accessed from a panel behind the air filter. Test Procedure Start the engine. When a diagnostic code becomes active, refer to the Troubleshooting section of this manual for a specific troubleshooting procedure. Oct 20, 2020 · The engine ECM will activate the appropriate compression brake solenoids in order to meet the requested level of braking. Excellent visibility and Convenient 311B EXCAVATOR parts packages for common maintenance and repairs. Watch his brief video and learn from Jeff Payne, Caterpillar Maintenance Expert, how to maintain the swing bearing and swing gear on your Cat® Hydraulic Exca 4109 Spare solenoid 1 (digital output) over current. txt) or view presentation slides online. But if I put the hoe in limited mobility mode (the switch behind the seat) the swing drive motor works. Note: Operating the travel levers or pedals will not disengage the swing When active errors appear on a Cat Excavator, start by scanning the onboard diagnostic system to identify fault codes. Serial number XGK00244. 4203 Hydraulic oil temperature sensor is shorted to body ground. Read somewhere here its the same as the fast track solenoid so might be worth your while to swap the two and rule out that as a problem at least. I unplugged the switch on the right side of the valve (viewing it from the front) and adjusted the swing brake solenoid in and out until I felt the least spring pressure. The swing has stopped functioning in both directions, but all other hydraulics are still operational. Cat® Solenoid Valve manages hydraulic pressure for parking brake engagement and release Brand: Cat Disconnect connector (5) from the solenoid valve for swing parking brake (4). * Detailed Oct 8, 2020 · How an excavator swing motor /swing drive works hydraulics hystat 15. If the issue lies within the ECM control, switching the backup mode to manual should allow the swing brake to release, provided the solenoid and wiring are functioning properly. The pilot pressure causes brake piston (17) to move upward against the force of brake spring (18). This action could be energizing a solenoid, sounding an alarm or activating a motor. 410A Over-current in digital output (swing brake solenoid). Place the machine controls at the following settings: engine speed dial "10" and AEC switch OFF. When the swing brake is released, the swing operation of the upper structure is enabled. Check for leaks, worn brake pads, or damaged control switches. The electromagnet can open or close the switch part of the relay. 336D 4201 Engine speed is not normal. The following is a list of Diagnostic Trouble Codes (DTC) for the 312F, 313F, 316F, and 318F machines. Can any one help with drawing or show me how to check the power?? Thank you koecon said: SWING MOTOR MAKE-UP VALVE OPERATION SWING MOTOR PARK BRAKE RELEASE VALVE OPERATION - Continued Technical Manual For Hydraulic Excavator Model 330Lcr 1 Page Navigation 415 416 417 418 419 420 421 422 423 424 425 The Cat 312B turntable stopping after an hour suggests a thermal or electrical fault. txbklj qudy zd1rq dpurshxw j4e1wq hlzrps 6wkl901 wcfkdwv vjohqk kuw