COOLING SYSTEM (CONT’D) Figure 10-70-4 Replacing The Coolant (S/N 522311001 & Above) See the Service Schedule for the correct service interval to replace the coolant. (See SERVICE SCHEDULE on Page 10-50-1.) WARNING 1 Do not remove radiator cap when the engine is hot. You can be seriously burned. W-2070-1285 P-32849 Figure 10-70-3 Remove the plug (Item 1) [Figure 10-70-4] from the back side of the engine block. 1 NOTE: The plug is located next to the alternator mount bracket. Drain the coolant from the engine. P-32693 When the engine is cool, loosen and remove the radiator cap (Item 1) [Figure 10-70-3] . 442 Excavator 10-70-2 Service Manual