ENGINE AR-COMPLETE 2016527 - Caterpillar

The On/Off solenoid in Illustration 19 includes:
Swing Priority Solenoid
Boom Up Electric Check Solenoid Valve (If equipped with Smartboom)Note: The values in Table 12 are for bench testing only. Values may not represent parameters for machine systems specifications.
Table 12
Rated Voltage 24 VDC
Coil Resistance 22.0 1.0 Ω (T=20° C)
Illustration 20 g03679000The On/Off solenoid in Illustration 18 includes:
Boom Down Electric Check Solenoid Valve (If equipped with Smartboom)Note: The values in Table 11 are for bench testing only. Values may not represent parameters for machine systems specifications.
Table 13
Rated Voltage 24 VDC
Coil Resistance 26.5Ω (T=20° C) Proportional Reducing Solenoid Valve
Illustration 21 g02703776Note: The values in Table 14 are for bench testing only. Values may not represent parameters for machine systems specifications.
Table 14
Current Range 0 mA ~ 700 mA
Coil Resistance 11.5 0.5Ω (T=20° C)
Illustration 22 g02263554
A - Port pressure (kPa) vs Current (mA)
The proportional reducing solenoid valve is used on machines equipped with tool control. The P-Port is blocked and does not allow pressure to the A-port. Therefore, the machine ECM must apply current to the PRV in order to sent pressure to the A-port of the PRV.The PRV's include:
Negative Flow Control 1 Limit PRV
Negative Flow Control 2 Limit PRV
Power Shift Pressure PRV
Boom Down Electric Check Solenoid (If equipped with Smartboom)Reverse Proportional Reducing Solenoid Valve
Illustration 23 g02304374
Valve cutaway, hydraulic schematic symbol, and electrical connector designation
Note: The values in Table 14 are for bench testing only. Values may not represent parameters for machine systems specifications.
Table 15
Current Range 0 mA ~ 700 mA
Coil Resistance 11.5 0.5Ω (T=20° C)
Illustration 24 g02304414Reverse PRV's have the P-port open to the A-port with no current applied. Therefore, the machine ECM applies current to the PRV in order to decrease the pressure at the A-port.The reverse PRV's include:
Boom Regeneration PRVData Link
Cat Data Link
Illustration 25 g02694217
Schematic of the “Cat Data Link” Circuit
The Cat Data Link is an input and an output of the Machine ECM. The Cat Data Link connects to the Machine ECM at connector contact J2-16 and J2-25. The data link is designed to carry communications between the controller and the monitor. The data link is not a visible component. The data link consists of internal control circuits and a harness wiring. The data link is bidirectional. The controller can receive information and the controller can send information through the data link. The controller sends information about the fuel level, temperature of the engine coolant, and many other signals to the monitor panel.CAN Data Link
Illustration 26 g02694576
Schematic of the "CAN Data Link" Circuit
The CAN data link is used for communication between the following modules: Machine ECM, Switch Panel and Monitor. Two 120 Ohm terminating resistors must be installed in the wiring harness in order for the CAN data link to function properly.Action Alarm
The action alarm SOUNDS in order to alert the operator when a high emergency condition is present. For example, the engine oil pressure decreases below a set value.Travel Alarm
The travel alarm SOUNDS in order to alert the area that the machine is moving.