ARMY TM 9-2815-259-24 AIR FORCE TO 38G1-125-2 MARINE CORPS 09249A/09246A-24 3-18 (11)   Low fuel injection pump fuel delivery. Notify general support maintenance, refer to paragraph 5.4.12. (12)   Restricted exhaust. Refer to TM 9-6115-671-14. f. Remove test gage and install plug (6, Figure 3-7) in intake manifold. 3.8. COOLING SYSTEM MAINTENANCE. 3.8.1. GENERAL. This section provides maintenance for cooling system components.  Components of cooling system not mentioned in this section can be found in the TM 9-6115-671-14. __________ WARNING Engine coolant is very hot and under pressure after engine has been operating.  Allow engine to cool before you slowly loosen filler cap and relieve pressure from cooling system.  Failure to comply could result in severe personal injury. 3.8.2. THERMOSTAT AND WATER MANIFOLD/THERMOSTAT COVER. a.   Removal. __________ WARNING Engine coolant is very hot and under pressure after engine has been operating.  Allow engine to cool before you slowly loosen filler cap and relieve pressure from cooling system.  Failure to comply could result in severe personal injury. (1)     Drain coolant system if not already drained, refer to TM 9-6115-671-14. NOTE Remove fan guards if needed. (2)     Disconnect coolant outlet hose from water manifold/thermostat cover (8, Figure 3-1), refer to TM 9-6115-671-14. (3)     Remove capscrews (1, Figure 3-1) and move clamp (3) clear of cylinder head and alternator bracket. (4)     Disconnect water pump tube (4) and remove seal (5). Seal can be accessed by removing water temperature sender (refer to TM 9-6115-671-14). Discard seal. (5)     Remove capscrews (6 and 7), from water manifold / thermostat cover (8), thermostat (9), and gasket (10).  Discard gasket. (6)     Disconnect plug (11). (7)     Cover all openings to prevent entry of foreign material.