CONT GP- 5251507 - Caterpillar

For the most accurate specifications for the sender, see the table “Resistor, Solenoid And Sender Specification”. This table is located in the Electrical System Schematic for the machine that is being serviced.Test Step 1. CHECK THE SENDER
Disconnect the sender from the machine harness.
Measure the resistance between the two contacts of the sender. The following data is the correct approximate resistance: 106-3535 Level Sender Assembly and 134-3033 Fuel Level Sender Empty tank ... 240 to 260 ΩHalf tank ... 97 to 118 ΩFull tank ... 27 to 40 Ω 104-5546 Level Sender Assembly, 115-2086 Fuel Level Sender, 121-3174 Fuel Level Sender, 136-1617 Fuel Level Sender, 137-5156 Fuel Level Sender, 150-2995 Fuel Sender, and 151-1399 Sender Empty tank ... 92 to 98 ΩFull tank ... 0 to 3.5 Ω 9X-4942 Fuel Level Sender Empty tank ... 80 to 85 ΩHalf tank ... 40 to 43 ΩFull tank ... 0 to 2 Ω
Actuate the sender by hand while you are measuring the resistance.
The resistance should change as the sender is actuated through the empty range to the full range. Expected Result:The resistance that is measured is within the specifications.Results:
OK - The resistance for the fuel level sender is correct. STOP
NOT OK - The resistance for the fuel level sender is NOT correct.Repair: Replace the fuel level sender.STOP