TM-9-2350-261-20-2 Unit Maintenance Manual Volume 2 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-20-2 DRAIN COOLANT SYSTEM — Continued 0193 00 1. Remove coolant filler cap (1) slowly to relieve pressure. 2. Place clean containers under drain cocks (2), (3), (4), and (5). 3. Open oil cooler drain cock (4). 4. Open three engine block drain cocks. One drain cock (3) is on left side of block. The other two drain cocks (2) are on right side. 5. Open thermostat and deaerator elbow drain cocks (5). Allow system to drain. 6. After system is drained, close six drain cocks (2), (3), (4), and (5). Replace filler cap (1). 7. Tag master switch to warn others that engine coolant has been drained. 8. Save coolant for reuse, unless check shows coolant should be changed. 0193 00-2