C Series Lubricating Oil System - Overview Section F - Familiarization Page F-9 Inspect for the following defects: Electrical wiring broken Sending unit malfunction Plumbing loose or broken. If a sending unit malfunction is found: Use a master gauge of known accuracy to verify the reading of the suspect gauge. Connect the line from the master gauge to the main oil rifle on the fuel pump side of the engine. Replace the sending unit if it is defective. Oil Temperature Gauge - Inspection Remove the pipe plug from the bottom of the oil cooler, and install the oil temperature gauge sending unit. Oil Temperature at Rated Speed °C °F 126.6 MAX 260 Inspect for the following defects:
Electrical wiring broken Sending unit malfunction.