PICK AND CARRY OPERATIONS

TM-5-3810-306-10 Container Crane 40-Ton Rough Terrain Model RTB75CC Manual
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TM 5-3810-306-10 PICK AND CARRY OPERATIONS WARNING Exercise extreme caution when picking and carrying a load. 1. When performing pick and carry operations or operating on sloping ground, carry loads much less than capacity. Keep load low and uphill from crane. Swing load only to keep the load uphill, and always place loads on high side. 2. When traveling with a load, boom should be carried in line with direction of motion. EMERGENCY BOOM OPERATING PROCEDURES Although improbable the boom lift cylinders hydraulic equalizer line could fail. If this occurs, there are devices that allow continued crane operation. All crane functions remain operable until the hydraulic oil in the reservoir is depleted. The most important thing is to get the boom in a safe position so that repairs can be made. The following procedures are recommended for getting the boom to a safe position should the equalizer line fail. 1. Don’t panic. Remain in cab. All functions can be accomplished from cab. 2. Maintain engine at normal operating speed. 3. Maintain desired boom angle by pulling back on boom control lever, as necessary. With oil leaking from the hydraulic system, boom angle will drop if you do not react. 4. While maintaining boom at this angle: activate swing; retract boom; and operate hoist(s) as necessary until load is safely lowered to ground. 5. If over-the-side, retract as much boom as possible and then lower boom. If over-the-front, it will not be necessary to retract boom. Remember, boom cannot be lowered to minimum elevation over-the- rear, as boom would hit engine hood. EMERGENCY LOAD LOWERING PROCEDURE In the event of a hydraulic system failure (pumps, diesel engines, etc.), it will be necessary to lower a suspended load, retract the boom, swing the boom over the front and retract the outriggers in order to tow the crane to a maintenance area. To return the crane to the travel mode from; elevated and extended boom; over-the-side; with suspended load and outriggers extended and set; proceed as follows: NOTE A hand pump is permanently installed behind the sheet metal, on the right hand side of the crane, forward of the hydraulic reservoir. Refer to the figure titled - Hand Pump Operation, provided for this procedure. 1. Install pump handle and hoses. a. Remove pump handle and three (3) hoses (one each at 12-feet, 18-feet and 38-feet long) from tool box. b. Install pump handle. 2-54

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