Gradall 534B (9020-7317) Service Manual - Manual (Page 129)

GRADALL LOED MATERIALS HANDLER 534B TESTING AND ADJUSTING
HOW TO CHECK AND ADJUST
THE BOOM CABLE
THREE SECTION BOOM (RETRACTED)
THREE SECTION BOOM (PARTIALLY EXTENDED)
9
Two boom cables move the boom sections. The
cables are fastened to the rear of the main boom and
to the bottom side of the main boom.
Start engine and run the boom all of the way out,
then retract it slightly. Stop Engine. Remove the
cover from the rear of the main boom and visually
check for any sag in the top cable.
If there appears to be excessive sag in the top boom
cable, tighten the rear cable anchor nut. Secure
cable with wrench to prevent it from twisting and
tighten the adjusting nut to approximately 50 to 75
foot pounds of torque. Tightening the rear of the top
cable will automatically take up any slack in the
bottom cable.