VALVE (EXHAUST) 2M7727 - Caterpillar

Follow the troubleshooting procedures in this manual.Verify that the power supply is the problem. Temporarily connect a new power supply. Remove the old power supply from the chassis. Install the new power supply in the chassis.If the new power supply resolves the problem, reconnect the old power supply. Verify that the problem returns. If the problem returns, replace the old power supply.Replacing a Power Supply
Disconnect the power supply.
To avoid damage to electronic components, do not remove the processor from the SLC 5/04 Chassis until all power is removed from the power supply.Do not expose memory modules to surfaces or areas that may typically hold an electrostatic charge.
Remove the two retaining screws that secure the power supply to the chassis.
Remove the power supply from the chassis.
To avoid potential damage to the processor, handle all modules by the ends of the carrier or edges of the plastic housing. Skin oil or dirt can corrode metallic surfaces, inhibiting electrical contact.
Align the new power supply and the guides in the chassis.
Gently slide the power supply in the chassis. Secure the top retainer clips and secure the bottom retainer clips.
Install the two retaining screws that secure the power supply to the chassis.
Install a wire tie in order to secure your wiring.
Cover any unused slots. This protects the chassis.
Illustration 1 g00563308
Verify that the new power supply corrects the problem.