outriggers 40 42 may then be deployed as shown in fig3 it will be appreciated that depending on the relative position of the truck 10 and power pole 50 and the required operations it may only be necessary to deploy outriggers 40 42 on the near side of the truck 10 the manual switch 32 is moved into the second position to enable operation of the second crane 22 the second crane 22 can be extended upwardly to the top of the power pole 50 this is shown in fig4 the power lines 52 can then be disconnected from the power pole 50 and attached to a suitable carrier boom 24 on the second crane 22 the second crane 22 can then be operated to lift the power lines 52 safely up and away from the power pole 50 this is shown in fig5 the manual switch 32 can then be moved into the first position this has the effect of ceasing the supply of hydraulic pressure to the second crane 22 thus locking it in its extended position and of supplying hydraulic pressure to the first crane 20 allowing it to be operated the first crane 20 can then be extended outwardly to grasp the power pole 50 as shown in fig6 and to lift and remove the power pole 50 as shown in fig7 from this position the first crane 20 can be used to operate a boring device if required and to lift and install a new power pole 50 once the new power pole 50 is in position the operations described above can be reversed to re connect.