OPERATION OF MEDIUM WRECKER (Contd)
(12) To lift and swing load:
This operation requires use of all outriggers.
Perform steps 1 through 9.
Slightly pull boom control lever (6)
back to UP to take boom (1) weight off shipper braces
Remove retaining clips (16) from L-
shaped shipper brace retaining pins (14) and remove
pins (14) from shipper brace brackets (13).
Swing brace (12) upward to brace
retaining brackets (10) on each side of shipper (11).
Secure braces (12) on brackets (10) with retaining clips
When extending boom, move HOIST and
CROWD levers at the same time. Failure to
do so may result in boom damage.
Extend boom (1) as necessary by
pushing crowd control lever (8) forward to DOWN.
Maintain an even distance between crane block (3) and
boom sheaves (2).
Elevate boom (1) to desired height by
pulling boom control lever (6) back to UP.
Lift load (5). Refer to step 10.
Boom rotates 360. Make sure area is clear of obstacles, and caution is used
when operating boom over cab area. Damage to windshield, exhaust stack,
air intake, and cab may result.
Push swing control lever (9) forward to LEFT to swing load (5) left. Pull swing control lever (9) back to
RIGHT to swing load (5) right.
Lower load. Refer to step 11.