8

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

OPERATION

RAISING THE JIB

Important;- Make sure that the hook

is directly above the point of lift,

which in turn is directly above the

centre of gravity of the load.

1. Use the end of the pump handle

(19) to close the valve by turning it

fully clockwise.

• It should be hand tight, do not

overtighten.

2. Return the pump handle (19) to

the pump linkage and pump the

handle until the crane reaches

the desired height.

LOWERING THE JIB

1. Use the end of the pump handle

(19) to turn the valve

anticlockwise VERY SLOWLY.

• The speed of lowering the load

is controlled by how much you turn the valve.

EXTENDING THE JIB

1. Raise the jib until horizontal.

2. Remove the locating pin assembly

(29) & withdraw the pin.

3. Reposition the jib extension to the

desired length.

4. Replace the pin assembly (29)

ensuring the ‘R’clip is firmly in place

NOTES:

During transit or storage, it is possible

that an air pocket may have developed within the hydraulic ram, and the ram

action may therefore appear to be ‘spongy’. As the ram is self bleeding, any

air will be dispelled and the ram action normalized by fully raising and

lowering the jib a few times. Should the jib not reach its full height, the oil level

should be checked, as described in the Maintenance section.