TM 9-4520-257-12&P                                                      0011 00 0011 00-2 NOTE If the equipment must be kept in continuous operation, do only the procedures that can be done without disturbing operation.   Make complete checks and services when the equipment is shut down. Table 1.  Preventive Maintenance Checks and Services for H-45 Type I (Solid Fuel) Heater- Continued Item No. Interval Item To Be Checked Or Serviced Procedure Equipment Not Ready/ Available If: 5 Before Base Heater Doors (5) Inspect doors for alignment. Doors do not open. 6 Before Grate Heater Doors (6) Inspect doors for alignment. Doors does not open. 7 Before Stack Pipe Assembly (7) Inspect for dents.  Clean soot. Pipe sections bent out of shape or do not fit together. 8 Before Stack Cap Assembly (8) Inspect tent lines, wire ropes for damage. 9 During Spark Arrester (2) Inspect for snug fit and leaks. Leaks. 10 During Ashes and Clinkers   Remove every 3 to 4 hours. 11 During Stack Cap Assembly (8) Inspect tent lines, wire ropes for damage. 12 After Spark Arrester (2) Clean soot and residue as required. 13 After Top Heater Shell and Heater Body Base (4) Clean heater of foreign matter, soot, or residue.