Table of Contents
Rev. 10/30/2020
WTJ-20 MANUAL
Table of Contents
Copyright 2020 Vestil Manufacturing Corp.
Page 9 of 11
BOOM ANGLE ADJUSTMENTS
The boom can be set at any of 4 positions
to change the maximum lifting height. To
adjust the boom angle:
1. Press the DOWN button to lower the hook
a few feet below the end of the boom.
2. Remove the hitch pin from the end of the
angle adjustment pin (the “AAP”).
3. Pull the AAP from the boom receiver. Do
not remove the pivot pin.
4. Raise the boom. Align the pin holes in the
boom with the desired position (A-D) and
reinsert the AAP.
REMINDER:
Boom angle affects the lifting
capacity of the crane. After changing the boom
angle, consult the appropriate
determine the capacity of your crane.
BOOM LENGTH ADJUSTMENTS
The boom consists of a 2 telescoping segments to allow the overall length can be adapted as necessary for
specific applications. Before adjusting the boom length, unload the crane. To change the boom length:
1. Lower the hook by pressing the DOWN button.
2. Remove the hitch pin from the end of the Length Adjustment Pin (“LAP”) and remove the LAP.
3. Grasp the end of the (inner) boom.
4. Pull the inner boom until the appropriate pin holes in the inner and outer boom segments align.
5. Reinstall the LAP and the hitch pin.
REMINDER:
Boom length affects the lifting capacity of the crane. After changing the boom length, consult the
appropriate
or
to determine the capacity of your crane.
RECORD OF SATISFACTORY CONDITION (THE “RECORD”)
Before using the crane for the first time, make a written record of the appearance of each part of the crane and
how it operates. Thoroughly photograph the unit from multiple angles. Include close range photos of all pivot points,
anchoring points, labels, pins and pin holes, the winch, cable and hook. Cycle the winch up and down. Describe how
the unit looks and sounds as the winch operates. Measure the throat opening of the hook and record the
measurement. Collate all writings and photos into a single file. This file is a record of the unit in satisfactory condition.
INSPECTIONS & MAINTENANCE
Inspect and maintain the unit as described below to preserve satisfactory operability. Compare all inspection
results to the RECORD to determine whether a component is in satisfactory condition or requires repair or
replacement. Restore the unit to satisfactory condition before returning it to service. If the unit cannot be restored to
satisfactory condition, disassemble it and dispose of the parts. The unit must be retested at 125% of its rated capacity
anytime the crane is repaired or modified.
Inspect the following at least once per month:
1.
Winch and pulleys
: Cycle the winch up and down. Confirm that the cable winds off of and back onto the drum
smoothly. The hook should not lower on its own. The cable pulley should not be loose or severely worn and should
rotate freely as the cable passes over it.
2.
Winch cable
: Check for reeving, fraying, thinning, bird-caging, & elongating regions. Replace the cable if
damaged.
3.
Winch power cord
: Examine the cord for damage and areas where the outer sheath has been damaged. Repair
all damage before using the winch again.
4.
Frame elements
: Examine the mast receiver, mast, and both segments of the boom for damage, deformation,
corrosion, cracked welds, and severe wear. Inspect all pivot points for severe wear. All frame members should be
square, rigid, and free of significant rusting. Remove rust with steel wool or a metal bristle brush , clean the areas to
remove rust particles, and apply touchup paint to the affected areas.
5.
Hook
: Visually inspect the hook before each use. Look for deformations and cracks. Immediately discard the hook
if it is cracked or if the throat opening is more than 15% in excess of the original throat opening. Discard the hook if it
is twisted more than 10° from the plane of the hook in its original condition. Confirm normal operation and operation of
the safety latch.
Boom
receiver
Pivot
pin
Angle
adjustment
pin (AAP)
Winch
Boom
Hitch
pin
Length
adjustment
pin (LAP)
A
C
D
B
