TM 5-5430-212-13&P 20. Let first patch set for a few (approximately 2 to 3) minutes. 21. Repeat steps 14 through 18, above, to apply second (outside) patch.  Outside patch must be aligned with inside patch (outline of inside patch will be visible). 22. Allow  repair  to  set  until  cured  before  flexing  fabric  or  putting  tank  back  into  service.    Approximate  curing times are given in Table 3-5. Table 3-5.  Curing Times for Fabric Repairs These times are for a thickness of approximately 0.10 inches (0.25 cm); they will be reduced for thicker sections and extended for thinner sections. Temperature Movement Or Use Full Mechanical Immersion Involving No Loading OrThermal In Or Immersion Loading Chemicals 41 F (5 C) 6 hours 72 hours 120 hours (5 days) 50 F (10 C) 4 hours 48 hours 84 hours 59 F (15 C) 3 hours 48 hours 72 hours 68 F (20 C) 2 hours 24 hours 60 hours 77 F (25 C) 1.5 hours 24 hours 48 hours 86 F (30 C) 1 hour 24 hours 36 hours 3-6. End Clamp Assembly One  end  of  the  tank  is  closed  by  a  mechanical  assembly.    This  mechanical  assembly  consists  of  the  following items: Handles Top Clamps Bottom Clamps Bolts Washers Change 4 3-8