TM 9-4520-260-13
4-19.
GLOW PLUG
This task covers:
a. Removal
b. Inspection
e. Installation
b. Cleaning
d. Testing
INITIAL SETUP
General Safety Instructions
Tools
Tool Kit, Service Refrigeration Unit
(Item 1, Appendix B, Section III)
Material/Parts
Dry cleaning solvent
The ignition system of this heater contains dangerous
(Item 6, Appendix E)
voltages which can cause severe electrical shock.
Be
Rags
sure to disconnect power before any maintenance actions.
(Item 9, Appendix E)
Equipment Condition
Power disconnected and fuel supply turned off.
Top and side covers removed (para 4-10).
Clean parts in a well-ventilated area. Avoid inhalation of
solvent fumes and prolonged exposure of skin to cleaning
solvent. Wash exposed skin thoroughly. Dry cleaning
solvent is potentially dangerous to personnel. Do not use
near open flame or excessive heat. Flash point is 140
F
(60 ).
C
REMOVAL (Figure 4-15)
1.
Remove nut (1) securing wire (2) to glow plug (4) and remove wire (2). Nut (3) remains on the glow plug.
2.
Remove glow plug (4) and gasket (5) from burner head (6).
CLEANING
Clean glow plug using a rag (Item 9, Appendix E) dampened with dry cleaning solvent (Item 6, Appendix E). Do
not immerse glow plug in solvent.
INSPECTION
Inspect glow plug for cracks, frayed insulation, or a defective element.
4-32
