Figure 3-20. Door spar installation.(7) Lift the top door spar assembly tothe top door spar pocket flaps. Button thepocket flaps over the door spar (fig. 3-20).(8) Pull the hoist chain to raise the ve-hicle door. Continue pulling until the bottomspar assembly is at maximum height. Securethe hoist chain in the chain retainer.c. End Arch Purlin Installation. The end archpurlin assemblies (4, fig. 1-4) connect the door-post assemblies to the end arches. There aretwo on each end of the tent, installed at groundlevel. To install, perform the following:(1) Attach one flange of the purlin as-sembly to the captive hex bolt near the bottomof each doorpost assembly.(2) Insert the adjustment shaft and clevisassembly in the opposite flange and fit it tothe bracket om the end arch anchor assembly(fig. 3-21) .(3) Anchor the doorpost anchor assemblyto the ground with steel pins.d. Securing End Walls.(1) At each side of the vehicle door, pullthe sod cloth under the end arch purlin, andengage the hem rope rings in the J-hooks.(2) Secure the hem rope nearest the door-post to the J-hook with a knot. Tighten the hemrope and secure the other end to the end arch.3-12. Anchoring the Tenta. Ground Anchors. Two men are needed todrive the arrowhead-type anchors. One manholds the driving rod holder and driving rod.The other man drives the anchor. Each anchor3-25
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