Figure 3-30--ContFigure 3-29. Endwall purlin flap hem rope and disengage thethree hem rope rings from the J-hooks.(2) Remove the toggle pin from each endarch anchor bracket and end arch purlin ad-justment shaft and clevis assembly.(3) Unscrew the captive and fitting on thedoorpost from the purlin insert and remove thepurlin.(4) Thread the doorpost captive end fit-ting into the insert of the replacement purlinand tighten.(5) Thread the adjustment shaft into theother insert.(6) Adjust the adjustment shaft andclevis assembly so that the holes in the cleviswill match the hole in the end arch anchorbracket.(7) Insert the toggle pin in the clevis andend arch anchor bracket.(8) Secure the purlin flap.c. Toggle Pin and Chain Removal and Instal-lation.3-34(1) To remove and install the toggle pinand chain on an installed purlin, untie the endsof the appropriate end wall purlin flap hemrope and disengage the three hem rope ringsfrom the J-hooks.(2) Remove the toggle pin (6, fig. 3-29)from the end arch anchor bracket and end archpurlin adjustment shaft (3) and clevis as-sembly (7).(3) Unscrew the adjustment shaft fromthe purlin insert (1) and slide link (4) at-tached to the chain (6) from the adjustmentshaft.(4) Slip the link of the replacement as-sembly over the adjustment shaft.d. Adjustment Shaft and Cevis AssemblyRemoval and Installation.(1) Follow the procedure in c (l), (2),and (3) above.(2) Thread the adjustment shaft of thereplacement assembly into the purlin insert.
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