Lower the load by operating the hand pump. This slips the hoist brake
in small increments allowing controlled descent of the load. Lower load to
ground and pump to create slack to disconnect hook block.
With the load safely down, lower the boom. Disconnect the hand pump
pressure hose from the hoist (reconnect the hoist brake line). Carry the end
of the hand pump pressure line under the right front of the crane and plug it
into the female quick disconnect half on the inlet side of the A-36 valve bank.
Lowering the boom requires two operators. One must operate the
pump while a second must sit in the operator's seat and hold the BOOM
control lever (10, figure 4-1 ) in the DOWN position. Lower the boom to full
down (horizontal) position.
With the load lowered and the boom down, swing the boom over the
front. Disconnect the hand pump pressure hose from the A-36 valve bank
and carry it further under the crane to the swing brake assembly forward of
the center of rotation. Refer to figure 4-9. The disconnect in the swing brake
line is at the brake housing. Pull apart the quick disconnect fitting in the
swing brake line and plug the male end of the hand pump pressure hose into
the female half of the brake hose.