BOOM HEAD Welded to fourth section of boom.Five or six metallic load sheavesand two idler sheaves mounted on heavy duty,anti-friction bearings. Quick reeving boom head.Provisions made for side-stow jib mount- ing. STANDARD BOOM EQUIPMENT BOOM 40-126' (10.67-33.53 m),four section full power boom.Telescopingis mechanically synchronized with single lever control.The synchro- nization system consists of a single telescope cylinder and high strength leaf chains to extend and retract the third section and the tip section.The boom is a high-strength four plate design,welded inside and out with anti-friction slide pads.Boom side plates are made with stamped impressions to reduce weight and increase strength.A single boom hoist cylinder provides for boom elevation of -4 to 78 degrees.Maximum tip height 134' (40.87 m). AUXILIARY BOOM HEAD Removable auxiliary boom head has single nylon sheave mounted onanti-friction bearing.Removable pin-type rope guard for quick reev- ing.Installs on main boom peak only.Removal is not required for jib use. HOOK BLOCK Five metallic sheaves on anti-friction bearings with hook and hooklatch.Quick reeving design does not require removal of wedge and socket from rope. HOOK & BALL 12 ton (10.9 mt) top swivel ball with hook and hook latch. OPTIONAL BOOM EQUIPMENT BOOM HEAD JIBS Welded to fourth section of boom.Five or six nylon load sheaves andtwo idler sheaves mounted on heavy duty,anti-friction bearings.Quick reeving boom head.Provisions made for side-stow jib mount-ing. 32' (9.68 m) side stow swing-on one-piece lattice type jib.Singlenylon sheave mounted on anti-friction bearing.Jib is offsettable at 0,15а,or 30.Maximum tip height is 165' (50.42 m). 33-57' (10.15-17.30 m) side stow swing-on lattice type jib.Single nylon sheave mounted on anti-friction bearing.Jib is extendible to 57' (17.30 m) by means of a 25' (7.62 m) manual pull-out tip sec- tion,roller supported for ease of extension.Jib is offsettable at 0а, 15,or 30а.Maximum tip height is 190' (57.91 m). >