Rev. 11/10/2020
OLA-4 MANUAL
Copyright 2020 Vestil Manufacturing Corp. Page 5 of 8
NATIONAL STANDARDS
OLA-series products are Below-the-Hook lifting (BTH) devices designed to facilitate handling of palletized
loads. American National Standard ASME B30.20 (the “Standard”), which can be purchased online at
https://www.asme.org/codes-standards/find-codes-standards/b30-20-hook-lifting-devices
provides
inspection, testing, maintenance, and operation instructions for users of BTH devices. Acquire a copy of the
Standard. Apply all mandatory provisions of Chapter 20-1:
Structural and Mechanical Lifting Devices
.
Contact local occupational safety and health specialists to determine whether there are laws, ordinances,
codes, etc. (“authorities”) in addition to the Standard that apply to BTH pallet handlers in the location where
the handler will be used. If content in this manual conflicts with provisions in authorities or the Standard,
apply the provisions from the authorities or Standard. Contact
USING THE LIFTER
This lifter is a below-the-hook lifting device, design category B (used for loads and variations which are
severe and not accurately defined), service class 1 (20,001 to 100,000 load cycles). It should only be
operated by qualified personnel. ASME B30.20 defines
qualified person
as “a person who, by the
possession of a recognized degree in an applicable field or certificate of professional standing, or who, by
extensive knowledge, training, and experience, has successfully demonstrated the ability to solve or resolve
problems relating to the subject matter at hand.” Qualified persons include designated persons, trainees
under the direct supervision of a designated person, maintenance personnel, test personnel, and inspectors.
ADJUSTING THE LIFTER
Height and width of OLA-series lifters are adjustable.
•
Height adjustments: Remove the height adjustment pin (99-112-057). Pull the inner frame tube up. Align
the pin holes in the inner and outer frame tubes; then reinstall the height adjustment pin.
•
Width adjustments: Each fork is independently adjustable.
o
OLA-4-42: Pull up on the detent pin and turn the top of the pin 90° to hold it in the raised position.
Slide the fork along the frame. Lock the fork in the new position by releasing the detent pin. Adjust
the position of the fork by sliding it along the frame until the detent pin seats into the nearest pin hole
in the frame. The forks must be the same distance from the centerline
o
OLA-4-36-DLX & OLA-4-42-DLX: Slide the forks along the lifter carriage. Position the forks the same
distance away from the outer tube of the frame.
LOADING THE LIFTER
ONLY lift pallets (closed bottom skids) with this device. Make sure that loads are centered and evenly
distributed on their pallets. Make sure that loads are securely bound to their pallets before lifting them. If
loose items fall off of the pallet while the lift is underway, people could be injured. The center of gravity of the
load also changes if load items fall off of a pallet. Shifting center of gravity could cause the lifter to tip and
the rest of the load could be lost.
1. Attach the hoist hook to the connection
link (OLA-4-42) or bale (OLA-4-36/42-
DLX).
2. Stand behind the lifter. Grasp both
operator handles. Fully insert the forks
into the fork channels of the pallet.
3. Slowly raise the lifter. Check load
balance and stability. The forks should be
level front-to-back and side-to-side. If the
lifter tilts forward or backward, the
position of the lifting bale must be
adjusted.
a. OLA-4-42:
Remove the bale
adjustment pin. Slide the bale along
the lifting arm. Reinstall the pin.
i. Lifter tilts forward (fork tips down):
Shift the bale towards the free end
of the lifting arm.
ii. Lifter tilts backward: Shift the bale
towards the back of the lifting arm.
OLA-4-42
C
. Detent
pin
A
B
. Height
adjustment pin
A
. Bale
adjustment
pin
Front of
lifting arm
B
C
Bale
Fork
Operator
handle
Connection
link
