Hydro UTOWE170-C-4 Guide

Operating Instructions
+
Spare Parts List
Tow Bar
UTOWE170-C-4
Serial number:....................................................
Year of Construction: ...........................................

12.06.7 UTOWE170-C-4
Page I
Record of Revisions
The basic issue of this manual for the UTOWE170-C-4 was published
in June 2009:
09.06.0
year month revision number
Revision No. Chapter Revised Pages Date Inserted By
10.12.3 5 33 December 16, 2010 K. Harris
12.03.4 Multiple II, III, V, 6, 19,
20, 29, 30, 31 March 6, 2012 A. Dumbrava
12.05.5 5 III-V, 27, 33 May 14, 2012 A. Dumbrava
12.05.6 5 33 May 21, 2012 A. Dumbrava
12.06.7 5 29, 30 June 29, 2012 S. Yoon

12.06.7 UTOWE170-C-4
Page II
Data sheet UTOWE170-C-4
Fig.: 1 Data sheet
Total length: 5,304.79 mm
Total width: 662.94 mm
Tube: Steel tube 127 mm O.D. X .6,350 mm WALL
Weight: 181.6 Kg
Tires: 2.4 bar
Operating temperature: - 20° C to + 60° C / (- 4° F to + 140° F)
Tow eye: revolving with shock absorber
Tow head: not revolving
Shear pin: part no 0432-0001-000, 0432-0002-000 and
0432-0003-000 for EMB. 170 - 195
Suitable for the following aircraft types:
E170 thru E195

12.06.7 UTOWE170-C-4
Page III
Table of Contents
Record of Revisions............................................................................................................I
Data sheet UTOWE170-C-4..........................................................................................II
Table of Contents.........................................................................................................III
Table of Figures............................................................................................................ V
Table of Diagrams........................................................................................................ V
Introduction.................................................................................................................. VI
0-0 SAFETY.......................................................................................................................1
0-1 Explanation of Directions Used in this Manual....................................................1
0-2 General Remarks................................................................................................2
0-3 Purpose / Use According to Intended Purpose...................................................3
0-4 Responsibility of Operators.................................................................................3
0-5 Safety Instructions ..............................................................................................4
0-6 Safety Features and Protective Devices.............................................................4
0-7 Risks Due to Hydraulic Energy ...........................................................................5
0-8 Modification of the Equipment.............................................................................6
0-9 Appropriate Disposal...........................................................................................6
0-10 Copyright.............................................................................................................6
0-11 Potential Sources of Danger...............................................................................7
1-0 DESCRIPTION.............................................................................................................8
1-1 General Information............................................................................................8
1-2 Tube Body...........................................................................................................8
1-3 Tow Eye..............................................................................................................9
1-4 Tow Head............................................................................................................9
1-5 Hydraulic Undercarriage .....................................................................................9
1-6 Safety................................................................................................................10
1-7 Spare Parts Service..........................................................................................10
2-0 OPERATION..............................................................................................................11
2-1 Transport of Tow Bar to Aircraft........................................................................11
2-2 Connection to Aircraft .......................................................................................12
2-3 Disconnection from Aircraft and Tractor............................................................15
2-4 Functional Description of Tow Head .................................................................16
3-0 MAINTENANCE.........................................................................................................17
3-1 Table of Maintenance Instructions ....................................................................17
3-2 Replacement of Shear Pins ..............................................................................19
3-3 Replacement of retaining pin ............................................................................21
3-4 Grease Requirements and Grease...................................................................22
3-5 Checking of Oil Level........................................................................................23
4-0 TROUBLE SHOOTING..............................................................................................24

12.06.7 UTOWE170-C-4
Page IV
5-0 ILLUSTRATED SPARE PARTS LIST .......................................................................26
5-1 Main towbar ......................................................................................................27
5-2 Tow head assy. 3301-0005-000........................................................................29
5-3 Tow eye 3303-0002-009..................................................................................31
5-4 Parts Kit 3303-0006-002...................................................................................33

12.06.7 UTOWE170-C-4
Page V
Table of Figures
Fig.: 1 Data sheet .....................................................................................................II
Fig.: 2 Horizontally coupled tow bar........................................................................12
Fig.: 3 Tow bar not coupled horizontally.................................................................12
Fig.: 4 Exceeding the maximum steer angle...........................................................14
Fig.: 5 Tow Head ....................................................................................................16
Fig.: 6 Replacement of shear pin and retaining pin.................................................20
Fig.: 7 Replacement of shear pin and retaining pin.................................................21
Fig.: 8 Main towbar.................................................................................................28
Fig.: 9 Tow head 3301-0005-000............................................................................30
Fig.: 10 Tow eye 3303-0002-009..............................................................................32
Table of Diagrams
Tab.: 1 Towing speed .................................................................................................3
Tab.: 2 Sources of Danger..........................................................................................7
Tab.: 3 Maintenance Instructions..............................................................................18
Tab.: 4 Grease Requirements and Grease...............................................................22
Tab.: 5 Trouble shooting...........................................................................................25

12.06.7 UTOWE170-C-4
Page VI
Introduction
This tow bar UTOWE170-C-4 was designed based on over 30 years of Hydro
experience in manufacturing tow bars. The design focus of this new product was
to combine an outstanding level of operator safety with meeting today’s
requirements for highly competitive ground support equipment.
The following safety features of the UTOWE170-C-4 are described below:
Ball Lock Pin ensures against
accidental or unexpected opening
of tow head when in use .
Flow-Valve between pump and
hydraulic cylinder which minimizes
the speed of retraction of the
undercarriage (no drops!)
Dampening tow-eye using
Urethane spring

12.06.7 UTOWE170-C-4
Page VII
Over-sized lifting handle with a
lifting weight of only eight pounds
to minimize the risk of operator
back injury
A safe operation of the equipment is only guaranteed, if the operator has read
and understood the operating instructions. Authorized personnel may only
operate the equipment.
Safety instructions are included in chapter 0-0 as well as in the chapters where
operating principles and movements are described.
Any person who is entrusted with operation, maintenance or repair of the
equipment must have read and understood these instructions, and in particular
chapter 0-0 “Safety”.
A disregard of these operating instructions and any damage resulting from such
a disregard leads to an exclusion of liability by Hydro System USA Inc.
These operating instructions cannot anticipate every potential application. For
further information or in case of problems that are not described or described
insufficiently in these operating instructions, please contact manufacturer.

12.06.7 UTOWE170-C-4
Page 1
0-0 SAFETY
0-1 Explanation of Directions Used in this Manual
Caution: Caution stands for a potentially dangerous situation.
A negligence of these directions can result in injury to a person or can cause
damage to the equipment.
Important: Important stands for an important direction for the proper
usage of the machine.
A negligence of these directions can result in damage to the machine or the
machine surroundings.

12.06.7 UTOWE170-C-4
Page 2
0-2 General Remarks
·These operating instructions are part of the equipment. They must always be
accessible to the operator, allowing the operator to inform himself.
·If the tow bar is sold, the operating instructions must be supplied with the
equipment.
·The tow bar may only be used for the purpose defined in the following
paragraph.
·The max. admissible towing speed may by no means be exceeded.
Important: Attach the tow bar to the towing vehicle's hitching point
appropriate to the towing height for the aircraft.
Warning! Take into account the tow bar's height to avoid risk of
collision into the aircraft.
Notice: The max. towing speed depends on the instructions given by
the aircraft manufacturer, the local regulations of the airport
operator as well as any applicable regulations of national
organizations and aircraft owner.
In addition, the prevailing weather conditions as well as
ambient conditions are to be taken into consideration when
selecting the towing speed.