Table of Contents
Rev. 10/30/2020
WTJ-20 MANUAL
Table of Contents
Copyright 2020 Vestil Manufacturing Corp.
Page 5 of 11
WTJ-20-3-AC & WTJ-20-4-AC EXPLODED VIEW AND BILL OF MATERIALS (28-006-112)
Item Part no. Description
Qty.
1
28-514-091
28-514-267
Frame, weldment, mast receiver
WTJ-20-3-AC & WTJ-20-4-AC
WTJ-20-3-AC-GAL & WTJ-20-4-AC-GAL
1
2
28-514-092
28-514-268
Frame, weldment, mast
WTJ-20-3-AC & WTJ-20-4-AC
WTJ-20-3-AC-GAL & WTJ-20-4-AC-GAL
1
3
28-514-100
28-514-269
28-514-093
Weldment, inner boom
WTJ-20-3-AC
WTJ-20-3-AC-GAL
WTJ-20-4-AC
WTJ-20-4-AC-GAL
1
4
28-514-099
28-514-094
Weldment, outer boom
WTJ-20-3-AC & WTJ-20-3-AC-GAL
WTJ-20-4-AC & WTJ-20-4-AC-GAL
1
5 28-112-042 Pin,
1
/
2
”x1
1
/
2
” retaining clevis, zinc plated
1
6 28-027-004 Pulley, tear drop
1
7 28-158-001 120V AC winch with clutch
1
8 33-112-034 Clevis pin, zinc plated,
3
/
4
”x3
3
/
4
”
1
9 99-112-057 Pin, height adjustment,
3
/
4
”
2
10 99-027-003 Pulley, cable
1
11 08-025-007 Knob,
3
/
8
”-16UNCx1
1
/
4
”
2
12 08-145-037 1-ton capacity clevis hook
1
13
37021
Nylon insert lock nut, Gr. 2, zinc finish,
5
/
16
”-18
1
14
11059
Bolt,
5
/
16
”-18UNC x 1
1
/
2
”, zinc plated, #2
1
15
33008
Flat washer, zinc plated, USS,
3
/
8
”
3
16
11103
Hex bolt, Gr. A, zinc plated,
3
/
8
” – 16 x
3
/
4
”
3
17
33622
Split lock washer, carbon steel, medium zinc
finish,
3
/
8
”
3
18
45286
#11 hitch pin clip,
1
/
8
”x2
5
/
8
”
3
19
65076
1
/
8
”x1” cotter pin, zinc plated
1
Diagram of Fixed Installation
(not mounted to vehicle)
Step 1: Create a foundation for the jib. The necessary
minimum foundation requirements appear in the diagrams.
When the foundation is adequately cured, install
7
/
8
” jam nuts
on each anchor bolts. Wind them to the surface of the
foundation. Level across opposite jam nuts by raising or
lowering specific nuts until all of the nuts are level. Then, fill
the center of the bolt pattern (see below “Overhead View of
Foundation” diagram) with grout, e.g. Morta Mix. The top of
the grout pedestal should be level with the tops of the jam
nuts.
Step 2: Set the crane on the foundation. Align the bolt holes
in the mounting plate with the anchor bolts and carefully
lower the mast onto the leveling nuts. Install
7
/
8
” lock nuts on
the anchor bolts but leave them loose. Plumb the mast at 90°
increments, i.e. check the vertical levelness of the mast at 4
locations equally spaced around the circumference of the
mast. Adjust the leveling nuts to fine tune levelness; then
tighten the lock nuts against the mounting plate.
