TM   5-3895-360-13 13-3. LOWER UNIT MAINTENANCE (VR11 C) (Con’t). CLEANING AND INSPECTION a. b. c. d. e. WARNING Dry  cleaning  solvent,  P-D-680,  is  toxic  and flammable.  Always  wear  protective  goggles and gloves, and use only In a well-ventilated area.   Avoid   contact   with   skin,   eyes,   and clothes, and DO NOT breathe vapors. DO NOT use near open flame or excessive heat. The solvent’s flash point Is 100°F-138°F (38°C-59⁰C). If you become dizzy while using cleaning solvent, Immediately get fresh air and medical help. If solvent contacts eyes, immedi- ately wash your eyes and get medical aid. Clean  all  metal  parts  with  dry  cleaning  solvent (Item  16,  Appendix  E)  and  dry  with  clean  rags (Item 15, Appendix E) . Inspect parts for damage. Replace damaged parts. Inspect springs for distortion. Replace springs if dis- torted. Clean   dust   boot   with   dishwashing   compound (Item 7, Appendix E) and water and allow to dry. Inspect dust boot for cracks and tears. Replace dust boot if cracked or tom. ASSEMBLY a. b. Figure 13-7. Piston Rod Replacement (VR11C). c. NOTE Refer to Figure 13-8, Dust Boot Replacement (VR11C),  for steps a through c. Install two short tube guides (32) and sleeve bush- ings (33) on lower unit housing (16). Install lower boot ring (31) on lower unit housing (16) with six screws (35) and new locknuts (34). Position dust boot (8), upper boot ring (6), and guide tube (11) on lower unit housing (16). 13-6