Vestil WTJ-20 Series, Instruction Manual, Page: 4 / 11

Table of Contents
Rev. 10/30/2020 WTJ-20 MANUAL
Table of Contents Copyright 2020 Vestil Manufacturing Corp. Page 4 of 11
WTJ-20-3-DC & WTJ-20-4-DC EXPLODED VIEW AND BILL OF MATERIALS (28-007-111)
Item Part no. Description Qty.
1 28-514-091
28-514-267
Frame, weldment, mast receiver
WTJ-20-3-DC & WTJ-20-4-DC
WTJ-20-3-DC-GAL & WTJ-20-4-DC-GAL
1
1
2 28-514-092
28-514-268
Frame, weldment, mast
WTJ-20-3-DC & WTJ-20-4-DC
WTJ-20-3-DC-GAL & WTJ-20-4-DC-GAL
1
1
3
28-514-100
28-514-269
28-514-093
28-514-270
Weldment, inner boom
WTJ-20-3-DC
WTJ-20-3-DC-GAL
WTJ-20-4-DC
WTJ-20-4-DC-GAL
1
1
1
1
4 28-514-099
28-514-094
Weldment, outer boom
WTJ-20-3-DC & WTJ-20-3-DC-GAL
WTJ-20-4-DC & WTJ-20-4-DC-GAL
1
1
5 28-112-042 Pin,
1
/
2
”x1
1
/
2
” retaining clevis, zinc plated 1
6 28-158-003 12V DC winch 1
7 28-027-004 Pulley, tear drop 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 5
14 11059 Bolt,
5
/
16
”-18UNC x 1
1
/
2
”, zinc plated, #2 5
15 33006 Flat washer, zinc plated, USS,
5
/
16
” 4
16 45286 #11 hitch pin clip,
1
/
8
”x2
5
/
8
” 3
17 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.