LINES GP-FUEL FILTER 2774805 - Caterpillar

Table 1
Troubleshooting Guide
Problem Probable Cause Solution
1. The pump will not operate. The pump is not receiving voltage. Check fuses, the timer and the electrical supply.
The actuation cam in the pump is blocked. Replace the pump motor if no blockage is identified.
2. The pump motor is running. No grease is being discharged. There is an air pocket at the inlet of the pump element. Disconnect the main delivery hose from the pump outlet.
Run the pump until solid grease flows from the outlet.
If solid grease does not discharge after 20 minutes of operation, the pump inlet is blocked with a contaminant.
A blocked pump inlet Remove the pump element from the pump body and inspect the inlet port for foreign particles.
Reassemble the pump and the element. Cycle the pump. If the pump element does not discharge grease, replace the pump element.
3. The pump has an empty reservoir. No grease Fill the reservoir to the maximum level and press the manual reset button.
Disconnect the main delivery hose from the pump and watch the grease flow until solid grease (no bubbles) is discharged. Reconnect the main delivery hose to the pump outlet.
4. The grease is discharged at the relief valve. Blockage in the metering valves, hose, tube or a connected component Switch the pump OFF and loosen each outlet in the primary valve one at a time. The blocked outlet will start discharging grease. The indicator pin will move when the lube valve has cycled.
Tighten all of the outlets on the primary valve.
Trace the line that discharged grease to the secondary valve.
Repeat the process of loosening each outlet one at a time until the blocked line is detected.
Tighten all the outlets.
Repair the valve that is blocked.
If a metering valve is causing the blockage, replace the metering valve.
5. The indicator pin on the primary valve does not move. Refer to problem 4. Refer to problem 4.
6. Lubrication point is not receiving grease. A hose or a tube has a cut. Replace the hose or the tube.