Model: A212636D
Airbus A330, A340, A350, McDonnell Douglas DC-10, MD-11 Towbar
12/2014 | Rev. 01 Page | 1
Tronair towbars/heads must only be used with matching Tronair heads/towbars, and Tronair shear pins.
This product can not be modified without the written approval of Tronair, Inc. Any modifications done without written approval
voids all warranties and releases Tronair, Inc., it suppliers, distributors, employees, or financial institutions from any liability
from consequences that may occur. Only Tronair OEM replacement parts shall be used.
1.0 PRODUCT INFORMATION
1.1 DESCRIPTION
This towbar is designed to push or pull all Airbus A330, A340, A350 and McDonnell Douglas DC-10, MD-11 aircraft equipped
with a 2.250 inch diameter nose gear cross pin. The following operational instructions are only intended to familiarize the
operator with the basic functions of the towbar. They are not intended to teach actual pushback procedures or techniques.
1.2 MODEL & SERIAL NUMBER
Reference nameplate on unit
1.3 MANUFACTURER
TRONAIR, Inc. Telephone: (419) 866-6301 or 800-426-6301
1740 Eber Road Fax: (419) 867-0634
Holland, Ohio 43528-9794 USA E-mail: sales@tronair.com
Website: www.tronair.com
2.0 SAFETY INFORMATION
2.1 USAGE AND SAFETY INFORMATION
To insure safe operations please read the following statements and understand their meaning. Also refer to your equipment
manufacturer’s manual for other important safety information. This manual contains safety precautions which are explained
below. Please read carefully.
WARNING! — Warning is used to indicate the presence of a hazard that can cause severe personal injury,
death, or substantial property damage if the warning notice is ignored.
CAUTION! — Caution is used to indicate the presence of a hazard that will or can cause minor personal injury
or property damage if the caution notice is ignored.
2.2 SHEAR BOLTS
The towbar is also equipped with shear bolts that are designed to shear when the design limits of the aircraft nose gear are
reached. One set of spare shear bolts has been provided with the towbar.
WARNING!
NEVER use other bolts in place of factory supplied shear bolts, aircraft damage may result! In the event
that the shear bolts should fail during operation, carefully inspect all parts of the towbar for damage before
replacing the shear bolts and returning the towbar to service.
3.0 TRAINING
3.1 TRAINING REQUIREMENTS
The employer of the operator is responsible for providing a training program sufficient for the safe operation of the towbar.
3.2 OPERATOR TRAINING
The operator training should provide the required training for safe operation of the towbar.
NOTE: Maintenance and Trouble Shooting are to be performed by a skilled and trained technician.
4.0 OPERATION
4.1 RAISING AND LOWERING
The towbar is equipped with a hand-operated hydraulic pump/tank which supplies a flow of hydraulic oil to a single acting
hydraulic cylinder. This cylinder raises or lowers the wheel carriage assembly to which the tires are attached.
To raise the towbar:
1. Make sure the fill cap on the tank is in the “vent” position and the small control valve located on the side of the pump is in
the complete closed (clockwise) position
2. Actuate the pump handle until the desired elevation is achieved
3. To lower the unit, turn the control valve handle counter-clockwise until hydraulic oil flows back into the tank and allows the
cylinder to retract
4. Close the valve when the towbar has reached the desired elevation
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