Routine Preventive Maintenance Perform the following maintenance on the lubricating oil filter: 1. Replace the oil filters when recommended by the appropriate maintenance table. Refer to section "GHG17 Medium Duty Preventive Maintenance Tables". 2. Make a visual check of all lubricating oil lines for wear and/or chafing. If any indication of wear is evident, replace the oil lines and correct the cause. 3. Check for oil leaks after starting the engine. Monitoring the Cooling System The cooling system must be full for proper operation of the engine. WARNING:
HOT COOLANT To avoid scalding from the expulsion of hot coolant, never remove the cooling system pressure cap while the engine is at operating temperature. Wear adequate protective clothing (face shield, rubber gloves, apron, and boots). Remove the cap slowly to relieve pressure. 1. Check the coolant level daily and maintain it at the full level. 2. Add coolant as required, but do not overfill. Before adding coolant, refer to "How to Select Coolant" for the listing of required intervals using the recommended coolants 70 All information subject to change without notice. Copyright © 2017 DETROIT DIESEL CORPORATION DDC-SVC-MAN-0192