Fig. 3 "Center Of Gravity Diagram; Fig. 4 "Mast Guard Hinge - Vestil WP Series Instruction Manual

03/10/03
FIG. 3: Center of Gravity
Diagram
Vertical center of gravity (A)
calculated from bottom
platform floor
A: Vertical center
Model
of gravity in
inches (~cm)
WP-3636 17.9 (45.5cm)
WP-3648 16.8 (42.7cm)
WP-4848 16.6 (42.2cm)
WP-4848-FF 16.6 (42.2cm)
WP-3636-84B 23.5 (59.7cm)
WP-3648-84B 21.9 (55.6cm)
WP-4848-84B 22.0 (55.9cm)
SP-175 11.4 (28.9cm)
Fig. 4: Mast Guard Hinge
Upper mast
guard
Lower mast
guard
Copyright 2017 Vestil Manufacturing Co.
rev. 3/6/2017
of
B: Horizontal
center of gravity
in inches (~cm)
13.6 (34.5cm)
19.0 (48.3cm)
18.6 (47.2cm)
18.6 (47.2cm)
12.3 (31.2cm)
17.4 (44.2cm)
17.0 (43.2cm)
16.8 (42.5cm)
Hex nut
Connection
bottom portions of mast guard.
Horizontal center of gravity
(B) measured from back of
mast guard
Lanyard attachment points
Model
WP-3636-DD
WP-3648-DD
WP-4848-DD
WP-4848-DD-FF
WP-3636-84B-DD
WP-3648-84B-DD
WP-4848-84B-DD
WP-3737-FD
Bolt
between top and
Horizontal center of gravity
(B) measured from back of
mast guard
Mast
guard
WP-series
center of gravity
(C.O.G.)
A: Vertical center B: Horizontal
of gravity in center of gravity
inches (~cm) in inches (~cm)
18.1 (46.0cm) 13.7 (34.8cm)
18.8 (47.8cm) 17.0 (43.2cm)
16.8 (42.7cm) 18.5 (47.0cm)
16.8 (42.7cm) 18.5 (47.0cm)
23.4 (59.4cm) 12.5 (31.8cm)
21.9 (55.6cm) 17.3 (43.9cm)
21.9 (55.6cm) 17.0 (43.2cm)
16.5 (41.9cm) 18.0 (45.7cm)
If the mast
guard is improperly fastened, it
cannot adequately
platform occupants.
make sure that hinge fasteners
(circled in the drawings) are
tightened to 35ft·lb of torque.
Retighten the connection to 35
ft·lb whenever:
1. The work platform is taken
out of storage:
 Raise the upper portion of
the mast guard, and then
 Tighten the bolts and nuts.
2. If the mast guard is bumped
or deflected from vertical.
 Immediately
platform to the ground; then
 Straighten the mast guard
(return it to the
orientation) and retighten the
bolts and nuts.
Page 7 of 16
WP, MANUAL
protect
Therefore,
lower the
vertical