TM 10-4520-259-13&P
Section V. UNIT MAINTENANCE PROCEDURES
4-12. GENERAL.
This section contains unit maintenance procedures for the water heater as authorized by the Maintenance
Allocation Chart (MAC), Appendix B, of this manual. Procedures include instructions for inspecting, servicing,
replacing or repairing assemblies and subassemblies. All maintenance procedures in this section can be
performed by one person unless otherwise indicated in the initial setup. Read all, warnings, cautions, notes and
instructions carefully before performing the procedures. Read and understand all warnings at the front of this
manual.
MAINTENANCE PROCEDURE
PARAGRAPH
Fuel Supply Control Assembly...................................................................................................... 4-13
Burner Head Assembly................................................................................................................. 4-14
Smokestack and Guard Assembly (M-80)/Exhaust Duct (M-85).................................................... 4-15
Ignition Transformer Assembly ..................................................................................................... 4-16
Electrical Components.................................................................................................................. 4-17
Ignition Cable Assemblies............................................................................................................. 4-18
Fuel Filter Assemblies (M80) and (M85) ....................................................................................... 4-19
Fuel Pump Assemblies................................................................................................................. 4-20
Water Vessel and Skid Assemblies............................................................................................... 4-21
Upper and Lower Manifold Assembly............................................................................................ 4-22
Drum Fill Adapter Assembly, Type II............................................................................................. 4-23
4-17
