TM 9-2610-200-14 2-70 CHAPTER 2. CARE, MAINTENANCE, AND INSPECTION (Con't) SECTION IV.   DIRECT SUPPORT MAINTENANCE (Con't) 2-37. NONDEMOUNTABLE LARGE EARTHMOVER RIM MAINTENANCE.   This Task Covers:          a.   Demounting                                                        b.   Mounting Initial Setup: Equipment Conditions:   With the nondemountable rim, the tire will be demounted and mounted with the rim remaining on the vehicle. Jack up vehicle. Refer to appropriate vehicle maintenance TM for jacking instructions and related safety precautions. Tools/Test Equipment:   Hydraulic tire removing tool (optional) Inflator-gage, pneumatic tire (includes 10' hose) (Item 30, Appendix B) Tire iron, rim type (Item 36, Appendix B) Tire iron, curved flat type (Item 34, Appendix B) Tire iron, lockring type (Item 35, Appendix B) Materials/Parts:   Tire and rim lubricant (Item 90, Appendix C) Personnel Required: Two a.  DEMOUNTING   1.   Remove valve core and completely deflate tire (see paragraph 2-26). Run a piece of wire through valve stem to ensure that it is not plugged.   WARNING Improper use of power equipment or use of faulty or damaged power equipment could cause serious injury or death. When dislodging tire beads, lockrings, or side ring flanges, be absolutely certain no air remains in tire. Serious injury of death could result.   CAUTION Never use petroleum based products such as oil or grease when demounting/mounting tires from rims. Petroleum based products have a severe degrading affect on tire rubber. Use only approved tire and rim lubricant. NOTE If a hydraulic tire remover is available to loosen tire beads, the manufacturer's instructions must be followed. When tire bead is completely free of rim flange, proceed with step 8.