Rev. 8/4/2020
P-JIB MANUAL
Copyright 2020 Vestil Manufacturing Co.
Page
11
of
14
RECORD OF SATISFACTORY CONDITION
Before putting the crane into service, describe the appearance and functions of the crane in writing. Include
observations about each part of the crane. Photograph the unit from multiple angles. Include close range
photographs of pivot points and pins, the hydraulic system (cylinder, pump, hoses, and oil tank), hooks, shackles
and shackle pins, floor locks, and casters. Use the crane to lift a test weight. Raise and lower the boom. Include
notes about how much force is required to move the pump handle moves back-and-forth, as well as sounds heard
while the cylinder extends and retracts (boom elevates and lowers). Thoroughly photograph the unit and all labels
applied to it. Add the photographs to the record. This record documents
satisfactory condition
of the crane.
INSPECTIONS & MAINTENANCE
Compare observations during inspections to your RECORD to determine whether the unit is in satisfactory
condition. DO NOT use the crane unless it is in satisfactory condition. If repairs are necessary, only install
manufacturer-approved replacement parts.
(A)
Before each use
, inspect the following items:
1)
Frame, mast, cylinder brackets (where cylinder attaches to mast and boom), & booms (inner and
outer.
Examine each item for damage and severe wear.
2)
Cylinder and pump.
Check for oil leaks. Raise and lower the boom. Listen for unusual noises and watch
the cylinder. Confirm that it extends and retracts smoothly.
3)
Load hook and shackle
. Closely examine the load hook and shackle. Make sure that neither is severely
worn, warped, bending or cracking. Confirm that the safety latch (of the hook) operates correctly. Also
inspect the shackle bracket. The bracket should be square and rigid and lack cracks and significant
bends. The pin hole (for the shackle pin) should not be elongated.
4)
Shackle and shackle pin.
Make sure that the shackle and pin are not bent, cracked, stretched, or
severely worn. The opening in the lifting arm for the shackle should not be stretched, bent or cracked.
5)
Inner and outer booms
. Confirm that both parts are rigid and square.
6)
Repairs.
Complete all necessary repairs before returning the crane to service. Make a dated record of all
repairs, adjustments and replacements.
AIR PURGING PROCEDURE
Air can be trapped inside the hydraulic circuit. If this happens, you might notice that the boom feels spongy
when it is raised. Air must be removed from the circuit if this happens.
1. Lower the boom and disconnect the cylinder from the crane by removing the clevis pins. See Diagram on p.
10.
2. Lay the cylinder on a flat surface with the hose on top.
3. Loosen the hose fitting but do not disconnect the hose. Wrap a rag around the fitting.
4. Circulate oil to the cylinder by slowly moving the handle back and forth. Air and oil will sputter from the fitting.
When no more air is present, tighten the fitting and pin the cylinder to the crane.
BOOM LENGTH ADJUSTMENT
To adjust the length of the boom, first use the hand pump to raise the boom to make it level. Remove the
hitch pin and pull out the clevis pin. The inner boom is now free and can be pulled or pushed. Align the
appropriate holes in the inner and outer booms to produce the desired boom configuration; then reinstall the
pins.
Hitch pin
Clevis pin
