ENGINE MAINTENANCE - Maintenance Procedures 6. Reduce idle to low RPM and top off surge tank to Ѕ inch above the MIN line. 7. Run engine a higher idle for 10 minutes. 8. Reduce idle to low RPM and top off surge tank to Ѕ inch above the MIN line. 9. Allow engine to cool, then top off surge tank to the “COLD FULL” mark, the base of the filler neck, or the sight glass, if applicable. 10. Replace the surge tank fill cap. 3 2 1 to be removed) 3. Fill line 2 1. Remove the surge tank fill cap (1). Do not remove the surge tank pressure cap (2). 2. Fill the system with premixed coolant through the surge tank fill neck. 3. Start the engine and idle at low RPM for 2 minutes. 4.
Top-off surge tank to base of filler neck while idling, or Ѕ inch above the MIN line, if applicable. 5. Run engine at a higher idle until engine fan turns on and allow thermostat to open. 1. Fill cap (service point) 2. Pressure cap (never NOTE If the coolant frequently needs top- ping-up or there are any signs of cool- ant leakage, consult a PACCAR Serv- ice dealer. Y53-1166-1G1 (08/2018) 67