TM 5-4610-223-12 Section II.  MAINTENANCE ALLOCATION CHART (1) (2) (3) (4) (5) (6) *Maintenance Category Group Component/ Maintenance Tools and Number Assembly Function C O F H D Equipment Remarks Sight glass Service 0.2 Replace 0.2 C Heater, combustion Service 0.5 B chamber Replace 1.0 Glow plug Service 0.4 C Replace 0.3 Float bowl Repair 0.5 C assembly Replace 0.5 Needle valve Service 0.3 C Replace 0.5 Spart plug Service 0.2 Replace 0.3 Indicator light, lens and lamp: Replace 0.3 Heater exhaust stack Inspect 0.2 Replace 0.6 Fuel lines, Service 0.3 heaters: Inspect 0.3 Replace 0.5 A Thermostat, heater: Replace 0.5 C Burner head assembly Service 0.2 C Replace 0.5 Burner head assembly Service 0.2 Replace 0.5 B Selenium rectifier Inspect 0.2 Replace 0.5 B Transformer Inspect 0.5 Replace 1.0 B Base assembly, relay mounting Inspect 0.3 Repair 0.5 B Replace 0.5 Fuse- Replace 0.2 Box assembly, ignition coil Inspect 0.2 Repair 0.5 B Replace 1.0 *Subcolumn are is follows: C - Operator/Crew O - Organizational F - Direct Support H - General Support D - Depot D-6