FIGURE 2-1. Oil Cooler Bypass Valve

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Table 2-2. Troubleshooting

TM-55-1905-223-24-5 Bowthruster Engine for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

FIGURE 2-2. Oil Cooler Bypass Valve Temperature Check

TM 55-1905-223-24-5

Table 2-2. Troubleshooting-CONT

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

STEP 2.

Check oil pressure gauge for malfunction. V

Check for broken electrical wiring between gauge and sending unit.

Check for loose or broken gauge or loose electrical wiring connection to gauge.

Replace oil pressure gauge (para. 2-22).

STEP 3. Check for low oil temperature.

a. Check oil cooler bypass valve operation (FIGURE 2-1).

WARNING

The flash point of new lubricating oil is approximately 430 (220 ). Do not allow

oil temperature in the container to exceed 300 (150 ). Do not allow water

droplets to enter the container of hot oil. Water droplets will cause a violent

reaction which can cause personal injury.

FIGURE 2-1. Oil Cooler Bypass Valve .

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