Maintenance - Section 40 02/10 OM4052 Page 40-2 Lubrication and Service Check the coolant sight gauge. If the coolant cannot be seen in the sight gauge, add coolant to the cooling sys- tem before operating the truck. Refer to the following section for the proper filling procedure. COOLING SYSTEM SERVICE RESERVE ENGINE OIL SYSTEM - (IF EQUIPPED) The reserve engine oil system is designed to add more oil capacity to the engine to reduce the frequent servicing of the engine oil. The engine oil level must still be checked every shift by using the dipstick. If the engine oil level is not correct, check for proper operation of the reserve engine oil system.
Never add oil to the engine unless it has been drained. Radiator Filling Procedure The cooling system is pressurized due to thermal expansion of coolant. Do not remove the radiator cap while the engine and coolant are hot. Severe burns may result. If the engine oil has been drained from the oil pan, new oil must be added to the engine oil pan before starting. Do not use the oil in the reserve tank to fill an empty engine with oil. After an oil change, both the engine and reserve tank must be full of oil before starting the engine. 1. With the engine and coolant at ambient tempera- ture, and remove the radiator cap. NOTE:
If the coolant is added using the Wiggins quick fill system, the radiator cap must be removed prior to adding the coolant. Reserve Oil Tank Filling Procedure (Remote Fill) 1. Connect the pressure supply hose from the new oil supply to the quick coupler on the truck. Open the valve on the supply hose to apply pressure. 2. Fill the radiator with the proper coolant mixture, as specified by the engine manufacturer, until the coolant is visible in the sight gauge. 2. On remote control box (1, Figure 40-1), pull out on power switch (2) to turn on the system. 3. Install the radiator cap. 3. Push start switch (3). VALVE OPEN light (5) should illuminate and the filling process will begin. 4.
Start the engine and allow to idle for five minutes. Check the coolant level at the sight gauge. 4. When the tank is full, the VALVE OPEN light will turn off and FULL light (4) will illuminate. 5. If the coolant is not visible in the sight gauge, repeat the procedure. Any excess coolant will be discharged through a vent hose after the engine reaches normal operating temperature. 5. Close the oil supply valve in the fill hose. 6. Press start switch (3) for a couple of seconds. 7. Disconnect the new oil supply hose. 8. Push power switch (2) to turn off the system. FIGURE 40-1. CONTROL PANEL 1. Remote Control Box 2. Power Switch 3. Start Switch 4. FULL Light 5.
VALVE OPEN Light COOLING SYSTEM ANTIFREEZE RECOMMENDATIONS (Ethlyene Glycol Permanent Type Antifreeze) Percentage of Antifreeze Protection To 10 - 5°C +23°F 20 - 9°C +16°F 25 - 11°C +11°F 30 - 16°C +4°F 35 - 19°C - 3°F 40 - 24°C - 12°F 45 - 30°C - 23°F 50 - 36°C - 34°F 55 - 44°C - 48°F 60 - 52°C - 62°F Use only antifreeze that is compatible with the engine, as specified by the engine manufacturer.