Series 50 – Section 24.1 Low Battery Voltage

Section 24.1
Low Battery Voltage

To determine if a weak battery is causing rough running or stalling, perform the following steps:‪

1. Start and run the engine.
2. Measure the battery voltage; refer to OEM guidelines.
   1. If the battery voltage is greater than 10.5 volts, refer to "24.2 Aerated Fuel Oil" .
   2. If the battery voltage is less than 10.5 volts, replace the battery; refer to "24.1.1 Battery Replacement" .

Section 24.1.1
Battery Replacement

Perform the following steps for battery replacement:‪

1. Remove and replace the battery; refer to OEM guidelines.
2. Verify battery replacement; refer to "24.1.1.1 Test Engine with Replaced Battery" .

Section 24.1.1.1
Test Engine with Replaced Battery

Perform the following to determine if the battery replacement resolved difficulty:‪

1. Start and run the engine.
2. Run the engine at idle with a no-load for approximately 5 minutes, allowing the engine coolant to reach normal operating range, 88-96°C (190-210°F).
   1. If the engine is not running rough or stalling, no further troubleshooting is required. Shut the engine down.
   2. If the engine is running rough or stalling, shut the engine down. Check for aerated fuel oil; refer to "24.2 Aerated Fuel Oil" .