Solution, Soap (Item 86, Appendix C)
Lockwasher (6) (Item 159, Appendix F)
This task covers:
c. Follow-On Maintenance
Engine OFF, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
Batteries disconnected, (Para 7-87)
Cab engine access panel removed, (Para 17-24)
Heater compartment access panel
removed, (Para 17-4)
Tools and Special Tools
Tool Kit, General Mechanics: Automotive
(Item 74, Appendix G)
Pan, Drain (Item 46, Appendix G)
19-14. HEATER CORE REPLACEMENT.
Allow engine to cool prior to removal of heater core to prevent burns and injury to personnel.
Set heater panel bottom control (1) to HEAT position.