Figure 5-9.—Righting an overturned truck.Figure 5-10.—Highway tow.could be another vehicle, the wrecker boom, or a ropeblock and tackle with manpower.The attachment for the holding force is a holdingsling attached to the same points on the overturned truckas the pulling sling. The holding sling is then attachedto the holding force with wire rope, rope, or chain,making sure the holding force is attached to the centerof the sling. If a holding vehicle is not available, use thewrecker boom to hold the load, as shown in figure 5-9.Apply power gradually to the winch until theoverturned truck is past the vertical position. Then lowerthe truck on its wheels with the hoist winch, rather thanbooming out with the crane.NOTE: Maximum use of the boom jacks andoutriggers should be employed when this method isused.TowingA wrecker truck is capable of towing vehicles inseveral ways. The proper procedures and safetyguidelines for towing are important factors inpreventing damage to vehicles and injury to personnel.The basic procedures and guidelines for highwaytowing and cross-country towing are as follows:HIGHWAY TOW.— Attach the tow bar to thelifting shackle eyes of the disabled vehicle and thewrecker truck tow pintle. All wheels of the towedvehicle should be on the ground. With the tow bar, adriver is not required in the towed vehicle. (Seefig. 5-10.)CROSS-COUNTRY TOW.— Over rough terrain,across-country tow controls the towed vehicle well. Theprocedure for rigging for the cross-country tow is asfollows: (1) attach a chain lifting sling or the hoistingbar between the front lifting shackles of the truck;(2) attach a tow chain from the wrecker tow pintle to thelifting shackles of the disabled truck; (3) place the hoisthook block in the lifting sling approximately 12 inchesoff the ground; (4) extend the boom to remove the slackfrom the tow chain, and keep the towed vehicle fromramming into the rear of the wrecker truck; and(5) support the boom with the shipper braces to preventimpact loads on the crane mechanisms. (See fig. 5-11.)If the front end of the vehicle is damaged, usecross-country towing even though the disabled vehicleis being towed on the highway. Use the tow bar insteadof a tow chain.5-10
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