TM 9-2320-209-34-2-3 CHAPTER 21 MAINTENANCE OF MATERIAL USED IN CONJUNCTION WITH MAJOR ITEMS Section I. SCOPE 21-1. EQUIPMENT ITEMS COVERED. This chapter gives equipment maintenance pro- cedures for winterization kits, deep water fording, and special purpose kits for which there are authorized corrective maintenance tasks at the direct and general support maintenance levels. 21-2. EQUIPMENT ITEMS NOT COVERED. All equipment items for which corrective maintenance is authorized at the direct and general support maintenance levels are covered in this chapter. Section II. WINTERIZATION KITS 21-3. HOT WATER PERSONNEL HEATER KIT INSTALLATION. Install the kit using the instructions that come with the kit. 21-4. ENGINE HEATER KIT INSTALLATION. Install the kit using the instructions that come with the kit. 21-1