TM5-3820256-10Section IX. PREPARATION FOR MOVEMENT.2-45.Preparation for Movement.a. DrillingRig.(1)Mud pump suction and discharge lines. Be sure there is no pressure on any lines. Disconnect the pumpsuction hose and store it on the rig. Disconnect the mast bend hose. Disconnect and store the mud mixerand hoses. Store the mud pits on the rig tender.(2)Mast.NOTEThe following instructions assume that the rig's engine is running, that all the controls are in the OFF orneutral position, and that the truck transfer PTO case is engaged.(a)Observe the tachometer and set the throttle to the desired engine rpm.(b)Make sure all the drill pipe has been removed and properly stored on the rig tender. The kelly must beretracted in its transport position in the mast.WARNINGIt is very important that you make sure the mast cylinders are full of fluid before you begin lowering themast.(c)Momentarily operate the mast control to the UP position and check the hydraulic indication on thepulldown pressure gage. The pressure should rise rapidly when the up side of the mast raisingcylinders are full of hydraulic fluid.(d)Open both mast locks at the base of the mast.(e)Move the drawworks power control to the ON position.(f)Move the mast control to the DOWN position and lower the mast in one continuous operation, whilealternately operating the drum clutch levers to spool-up excess wire rope slack.(g)When the mast is resting solidly on the mast supports and all excess wire rope slack has been takenup, set the drum brake levers, making sure the ratchet locks each in the locked position.(h)After lowering the mast and securing it, detach the Retractable Life-line cable from the bottom of themast and perform the “After" PMCS while retracting the cable into the life-line housing. Detach thelife-line from the top of the mast and store in dry well ventilated storage area away from corrosivematerials.Change 5 2-128
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
