PRONAR T386 User manual

PRONAR Sp. z o.o.
17-210 NAREW, UL. MICKIEWICZA 101A, PODLASKIE PROVINCE
phone: [phone] [phone]
[phone] [phone]
fax: [phone] [phone]
www.pronar.pl
OPERATOR'S MANUAL
AGRICULTURAL TRAILER
PRONAR T386
TRANSLATION OF THE ORIGINAL COPY OF THE MANUAL
EDITION 1E-10-2020 PUBLICATION NO. 402N-00000000-UM

INTRODUCTION
Information contained herein is current at date of publication. As a result of improvements,
some numerical values and illustrations contained in this publication may not correspond to the
factual specification of the machine supplied to the user. The manufacturer reserves the right to
introduce design changes in machines produced that facilitate operation and improve the quality
of their work, without making minor amendments to this Operator's Manual.
This Operator's Manual is an integral part of the machine's documentation. Before using the
machine, the user must carefully read this Operator's Manual and observe all
recommendations. This guarantees safe operation and ensures failure-free work of the
machine. The machine is designed to meet obligatory standards, documents and legal
regulations currently in force.
The manual describes the basic safety rules and operation of Pronar T386 agricultural trailer.
If the information stated in the Operator's Manual needs clarification then the user should refer
for assistance to the sale point where the machine was purchased or to the Manufacturer.
MANUFACTURER'S ADDRESS:
PRONAR Sp. z o.o.
ul. Mickiewicza 101A
17-210 Narew
CONTACT TELEPHONES
[phone] [phone]
[phone] [phone]

SYMBOLS APPEARING IN THIS OPERATOR'S MANUAL
Information, descriptions of danger and precautions and also recommendations and prohibitions
associated with user safety instructions are marked:
and also preceded by the word "DANGER”. Failure to observe the instructions may endanger
the machine operator's or other person's health or life.
Particularly important information and instructions, the observance of which is essential, are
distinguished in the text by the sign:
and also preceded by the word "ATTENTION". Failure to observe the instructions may lead to
damage to the machine as a result of improper operation, adjustment or use.
In order to focus the user's attention on the need to perform maintenance, the relevant section
of the Operator's Manual is marked with the pictogram:
Additional tips and advice for machine operation are marked:
and also preceded by the word "TIP".

DIRECTIONS USED IN THIS OPERATOR'S MANUAL
Left side – side to the left hand of the operator facing in the direction of machine's forward
travel.
Right side – side to the right hand of the operator facing in the direction of machine's forward
travel.
REQUIRED MAINTENANCE ACTIVITIES:
Maintenance actions described in the manual are marked with the sign: 
Result of maintenance/adjustment actions or comments concerning the performance of actions
are marked with the sign: 

TABLE OF CONTENTS
1 BASIC INFORMATION 1.1
1.1 IDENTIFICATION 1.2
1.1.1 TRAILER IDENTIFICATION 1.2
1.1.2 AXLE IDENTIFICATION 1.3
1.1.3 LIST OF FACTORY NUMBERS 1.3
1.2 INTENDED USE 1.4
1.3 EQUIPMENT 1.7
1.4 TERMS & CONDITIONS OF WARRANTY 1.8
1.5 TRANSPORT 1.10
1.5.1 TRANSPORT ON VEHICLE 1.10
1.5.2 INDEPENDENT TRANSPORT BY THE USER. 1.12
1.6 ENVIRONMENTAL HAZARDS 1.12
1.7 WITHDRAWAL FROM USE 1.13
2 SAFETY ADVICE 2.1
2.1 BASIC SAFETY RULES 2.2
2.1.1 USE OF TRAILER 2.2
2.1.2 HITCHING AND DISCONNECTING FROM TRACTOR 2.3
2.1.3 PULLING THE LOAD BOX ON AND REMOVING THE LOAD BOX FROM
THE TRAILER 2.3
2.1.4 HYDRAULIC AND PNEUMATIC SYSTEMS 2.4
2.1.5 LOADING AND UNLOADING THE LOAD BOX 2.5
2.1.6 TRANSPORTING THE MACHINE 2.6
2.1.7 TYRES 2.9
2.1.8 MAINTENANCE 2.10
2.1.9 OPERATION OF PTO SHAFT 2.12
2.2 DESCRIPTION OF RESIDUAL RISK 2.13

2.3 INFORMATION AND WARNING DECALS 2.14
3 DESIGN AND OPERATION 3.1
3.1 TECHNICAL SPECIFICATION 3.2
3.2 TRAILER CONSTRUCTION 3.3
3.2.1 CHASSIS 3.3
3.2.2 TIPPING FRAME 3.5
3.2.3 MAIN BRAKE 3.7
3.2.4 PARKING BRAKE 3.11
3.2.5 HYDRAULIC SYSTEM OF THE SUPPORT (OPTION) 3.12
3.2.6 HYDRAULIC SYSTEM OF THE DRAWBAR 3.14
3.2.7 HYDRAULIC STEERING SYSTEM 3.15
3.2.8 CENTRAL HYDRAULIC SYSTEM 3.17
3.2.9 ELECTRICAL SYSTEM FOR CONTROLLING THE HYDRAULIC SYSTEM 3.19
3.2.10 ELECTRIC LIGHTING SYSTEM 3.21
3.2.11 STEERING LOCK HYDRAULIC SYSTEM 3.26
4 CORRECT USE 4.1
4.1 PREPARING FOR WORK BEFORE THE FIRST USE 4.2
4.1.1 CHECKING THE TRAILER AFTER DELIVERY 4.2
4.1.2 PREPARING THE TRAILER FOR FIRST HITCHING TO TRACTOR 4.3
4.2 HOOK SETTING ADJUSTMENT 4.5
4.3 HITCHING AND UNHITCHING THE TRAILER FROM TRACTOR 4.6
4.3.1 OPERATION OF SUPPORT WITH MECHANICAL GEAR 4.12
4.3.2 OPERATION OF FOLDING HYDRAULIC SUPPORT (OPTION) 4.13
4.3.3 HYDRAULIC STEERING SYSTEM OPERATION 4.14
4.4 HITCHING AND UNHITCHING THE SECOND TRAILER 4.16
4.5 OPERATING THE TRAILER 4.18
4.5.1 OPERATION OF CONTROL PANEL 4.18
4.5.2 PULLING THE LOAD BOX ON THE TRAILER 4.20

4.5.3 REMOVING LOAD BOX FROM TRAILER 4.25
4.6 LOADING THE LOAD BOX 4.27
4.7 TRANSPORTING LOADS 4.31
4.8 UNLOADING 4.34
4.9 OPERATION OF PNEUMATIC PARKING BRAKE 4.39
4.10 PROPER USE AND MAINTENANCE OF TYRES 4.39
4.11 USING UNDERRUN PROTECTION DEVICES 4.40
5 MAINTENANCE 5.1
5.1 PRELIMINARY INFORMATION 5.2
5.2 MAINTENANCE OF BRAKES AND AXLES 5.2
5.2.1 PRELIMINARY INFORMATION 5.2
5.2.2 INITIAL INSPECTION OF AXLE BRAKES 5.3
5.2.3 CHECK BRAKE SHOE LININGS FOR WEAR 5.3
5.2.4 CHECK WHEEL AXLE BEARINGS FOR SLACKNESS 5.4
5.2.5 ADJUSTMENT OF SLACKNESS OF WHEEL AXLE BEARINGS 5.6
5.2.6 MOUNTING AND DISMOUNTING WHEEL, INSPECTION OF WHEEL
NUT TIGHTENING. 5.7
5.2.7 CHECKING AIR PRESSURE IN TYRES, EVALUATING TECHNICAL
CONDITION OF TYRES AND STEEL WHEELS 5.9
5.2.8 INSPECTION I ADJUSTMENT OF MECHANICAL BRAKES 5.10
5.2.9 CHANGE OF PARKING BRAKE CABLE AND ADJUSTMENT OF CABLE
TENSION. 5.16
5.3 PNEUMATIC SYSTEM MAINTENANCE 5.19
5.3.1 PRELIMINARY INFORMATION 5.19
5.3.2 CHECKING AIR TIGHTNESS AND VISUAL INSPECTION OF
PNEUMATIC SYSTEM 5.19
5.3.3 CLEANING THE AIR FILTERS 5.21
5.3.4 DRAINING WATER FROM AIR TANK 5.22
5.3.5 CLEANING THE DRAIN VALVE 5.23

5.3.6 CLEANING AND MAINTAINING PNEUMATIC CONDUIT CONNECTIONS
AND PNEUMATIC SOCKETS 5.24
5.3.7 REPLACEMENT OF PNEUMATIC CONDUIT 5.25
5.4 HYDRAULIC SYSTEM MAINTENANCE 5.26
5.4.1 PRELIMINARY INFORMATION 5.26
5.4.2 CHECKING HYDRAULIC SYSTEM TIGHTNESS 5.26
5.4.3 CHECKING TECHNICAL CONDITION OF HYDRAULIC CONNECTIONS
AND SOCKETS. 5.27
5.4.4 REPLACEMENT OF HYDRAULIC CONDUITS 5.27
5.5 ELECTRICAL SYSTEM MAINTENANCE 5.28
5.6 MAINTENANCE OF SUSPENSION SYSTEM 5.29
5.7 TRAILER LUBRICATION 5.32
5.8 CONSUMABLES 5.37
5.8.1 HYDRAULIC OIL 5.37
5.8.2 LUBRICANTS 5.38
5.9 CLEANING THE TRAILER 5.39
5.10 STORAGE 5.40
5.11 TIGHTENING TORQUE FOR NUT AND BOLT CONNECTIONS 5.41
5.12 TROUBLESHOOTING 5.42
ANNEX A
ANNEX B

SECTION
1
BASIC
INFORMATION

Pronar T386 SECTION 1
1.2
1.1 IDENTIFICATION
1.1.1 TRAILER IDENTIFICATION
FIGURE 1.1 Location of the data plate and serial number
(1) data plate, (2) serial number
PRONAR T386 agricultural trailer is marked with the data plate (1) located on the faceplate
and with serial number (2). The serial number is stamped into the data plate and into the
faceplate – figure (1.1). When buying the trailer check that the serial numbers on the machine
agree with the number written in the WARRANTY BOOK, in the sales documents and in the
OPERATOR'S MANUAL. The meanings of the individual fields found on the data plate are
presented in the table below.

SECTION 1 Pronar T386
1.3
TABLE 1.1 Markings on data plate
ITEM
MARK
A General description and purpose
B Symbol / type of trailer
C Year of manufacture
D Seventeen digit vehicle identification number (VIN)
E Official certificate number
F Tare weight
G Maximum gross weight
H Carrying capacity
I Permissible hitching system loading
J Permissible axle 1 load
K Permissible axle 2 load
1.1.2 AXLE IDENTIFICATION
The factory number of the axle and its type are stamped onto the data plate secured to the
axle profile.
1.1.3 LIST OF FACTORY NUMBERS
Identification number (VIN)
S Z B 3 8 6 X
SERIAL NUMBER OF FRONT STEERING AXLE
SERIAL NUMBER OF MIDDLE FIXED AXLE
SERIAL NUMBER OF REAR STEERING AXLE

Pronar T386 SECTION 1
1.4
TIP
In the event of ordering a replacement part or in the case of the appearance of problems
it is often essential to give the factory n mbers of parts or the VIN n mber of the trailer,
therefore it is recommended that these n mbers are inscribed in the spaces above.
1.2 INTENDED USE
The hook trailer is designed for use with various types of load boxes (agricultural, building,
communal and special ones and transport platforms etc.), fulfilling the requirements
described in table (1.2). Trailer design enables connection and disconnection of load boxes
and their unloading by tipping to the rear. Type of load carried depends on load box use. The
trailer must not be used in any way other than that described above.
DANGER
The trailer m st not be sed for p rposes other than those for which it is intended, in
partic lar:
•for transporting people and animals,
•for transporting loose nsec red toxic materials, if there is a possibility of
ca sing environmental damage,
•for transporting machines and eq ipment, with high centre of gravity
affecting trailer stability,
•for transporting loads with neven loading and overloading of axles,
•for transporting nsec red loads, which may move in the load box.
•with load boxes not complying with the Man fact rer's req irements.
The trailer is constructed according to current safety requirements and engineering
standards. The brake system and the light and indicator system meet the requirements of
road traffic regulations. The maximum speed of the trailer on public roads in Poland is 30
km/h (pursuant to Traffic Law Act of June 20th 1997, article 20). In the countries where the
trailer is used, the limits stipulated by the road traffic legislation in force in a given country
must be observed. The trailer speed must not, however, be greater than the maximum design
speed of 40 km/h.

SECTION 1 Pronar T386
1.5
The trailer is not intended or designed for transporting people or animals.
Using it as intended also involves all actions connected with the safe and proper operation
and maintenance of the machine. Due to the above, the user is obliged to:
•carefully read the OPERATOR'S MANUAL of the trailer and the WARRANTY
BOOK and conform with the recommendations contained in these documents,
•understand the trailer's operating principle and how to operate it safely and
correctly,
•adhere to the established maintenance and adjustment plans,
•comply with general safety regulations while working,
•prevent accidents,
•comply with the road traffic regulations and transport regulations in force in a
given country, in which the trailer is used,
•carefully read the Operator's Manual and comply with its recommendations,
•only hitch the trailer to an agricultural tractor, which fulfils all the requirements
made by the trailer's Manufacturer.
The trailer may only be used by persons, who:
•are familiar with the contents of this publication and with the contents of the
agricultural tractor Operator's Manual,
•have been trained in trailer operation and safe operation,
•have the required authorisation to drive and are familiar with the road traffic
regulations and transport regulations.

Pronar T386 SECTION 1
1.6
TABLE 1.2 Load box requirements
DATA UNIT VALUE
Minimum / maximum internal length [mm] 5,000 / 7,500
Maximum external width [mm] 2,550
Maximum height (internal) [mm] 2,500
Maximum gross weight [kg] 33,000
Hook height according to DIN 30722-1 standard [mm] 1,570
Hook height according to SS 3021 standard [mm] 1,450
The hook trailer is designed for work with load boxes made according to DIN 30722-1
standard and SS 3021 standard. The trailer may be used with load boxes with dimensions
not greater than those specified in table (1.2).
WARNING
It is forbidden to se technically inoperative containers. The container sho ld have
adeq ate strength, allowing for its loading and nloading with f ll load.
Requirements concerning trailer operation with agricultural tractor are presented in the table
below.
TABLE 1.3 Agricultural tractor's requirements
CONTENTS UNIT REQUIREMENTS
Brake system - sockets
Double conduit pneumatic system
Hydraulic system
Pressure rating of the system
Double conduit pneumatic system
Hydraulic system
-
-
bar / kPa
bar / MPa
according to ISO 1728
according to ISO 7241-1
6.5 / 650
150 / 15
Electrical system
Electrical system voltage
Connection socket
Connection socket
V
-
-
12
7-pole compliant with ISO 1724
3-pole

SECTION 1 Pronar T386
1.7
CONTENTS UNIT REQUIREMENTS
Tractor hitches
Type
Minimum vertical load capacity of hitch
-
kN / kg
Lower transport hitch
29.43 / 3,000
Power take-off shaft (PTO)
Rotation speed
Rotation direction
RPM
-
540
clockwise
Other requirements
Minimum power demand kW /
Horsepower
133.8 / 182
1.3 EQUIPMENT
TABLE 1.4 Hook trailer equipment
ACCESSORIES
STANDARD
ADDITIONAL
OPTIONS
The Operator's Manual •
Warranty Book •
Connection lead for the electrical system •
Double conduit pneumatic system with ALB •
Double conduit pneumatic system with manual regulator or Hydraulic
braking system •
Hydraulic steering system – active steering system •
Drawbar with hydraulic shock absorbers •
Mechanical support with two-stage gear •
Straight hydraulic support or folding hydraulic support •
Ball drawbar eye K80. •

Pronar T386 SECTION 1
1.8
ACCESSORIES
STANDARD
ADDITIONAL
OPTIONS
Fixed drawbar eye ∅50 mm or rotating drawbar eye ∅50 mm •
Wide angle PTO shaft (71R6091CEWR7007) •
Wheel chocks •
Automatic rear hitch or manual rear hitch •
Slow-moving vehicle warning sign •
Warning reflective triangle •
Toolbox •
Steering lock hydraulic system •
Some standard equipment elements, which were listed in table (1.4), may not be present in
the delivered trailer. This allows the possibility of ordering new machines with a different set
of optional equipment, replacing standard equipment.
Information concerning tires is provided at the end of this publication in ANNEX A.
1.4 TERMS & CONDITIONS OF WARRANTY
PRONAR Sp. z o.o. Narew guarantees the reliable operation of the machine when it is used
according to its intended purpose as described in the OPERATOR'S MANUAL. The repair
period is specified in the WARRANTY BOOK.
The warranty does not cover those parts and sub-assemblies of the machine which are
subject to wear in normal usage conditions, regardless of the warranty period. Consumables
include the following parts/sub-assemblies:
•drawbar hitching eye,
•pneumatic system connector filters,
•tyres,

SECTION 1 Pronar T386
1.9
•brake shoes,
•bulbs and LED lamps,
•seals,
•bearings.
The warranty service only applies to such cases as: mechanical damage which is not the
user's fault, factory defects of parts, etc.
In the event of damage arising from:
•mechanical damage which is the user's fault, caused by road accidents,
•by inappropriate use, adjustment or maintenance, use of the trailer for purposes
other than those for which it is intended,
•use of damaged machine,
•repairs carried out by unauthorised persons, improperly carried out repairs,
•making unauthorised alterations to machine design,
the user will lose the right to warranty service.
The user is obliged to report immediately on noticing any wear in the paint coating or traces
of corrosion, and to have the faults rectified whether they are covered by the warranty or not.
For detailed Terms & Conditions of Warranty, please refer to the WARRANTY BOOK
attached to each machine.
Modification of the trailer without the written consent of the Manufacturer is forbidden. In
particular, do NOT weld, drill holes in, cut or heat the main structural elements of the
machine, which have a direct impact on the machine operation safety.
TIP
Demand that the seller caref lly and precisely fills o t the Warranty Book and warranty
repair co pons. A missing date of p rchase or sale point stamp, may make the ser
ineligible for any warranty repair or ref nd.

Pronar T386 SECTION 1
1.10
1.5 TRANSPORT
The hook trailer is ready for sale completely assembled and does not require packing.
Packing is only required for the machine's technical documentation and any extra fittings. The
trailer is delivered to the user either transported on a vehicle or, after being attached to a
tractor, independently (trailer towed with a tractor).
1.5.1 TRANSPORT ON VEHICLE
Loading and unloading of hook trailer from vehicle shall be conducted using loading ramp
with the aid of an agricultural tractor. During work, adhere to the general principles of
occupational health and safety (OHS) applicable to reloading work. Persons operating
reloading equipment must have the qualifications required to operate these machines. The
trailer must be properly connected with the tractor according to the requirements in this
Operators Manual. The trailer braking system must be started and checked before driving off
or onto ramp.
The hook trailer should be attached firmly to the platform of the vehicle using straps or chains
fitted with a tightening mechanism. Securing elements should be attached to the transport
lugs designed for this purpose (1) – figure (1.2).
WARNING
Do NOT raise the trailer by the transport l gs. They are sed only as attachment points for
sec ring elements d ring transport.
Transport lugs are welded to the longitudinal members (2) and to the front beam (3) of the
lower frame. Use certified and technically reliable securing measures. Worn straps, cracked
securing catches, bent or corroded hooks as well as other damage may disqualify use of the
given element from use. Carefully read the information contained in the Operator's Manual for
the given securing measure. Chocks or other objects without sharp edges should be placed
under the wheels of the trailer to prevent it from rolling. Trailer wheel blocks must be secured
to the load platform of the vehicle in a manner preventing their movement. The number of
securing elements (cables, straps, chains and stay etc.) and the force necessary for their
tensioning depends on a number of things, including weight of the trailer, the construction of
vehicle carrying trailer, speed of travel and other conditions. To secure the trailer optimally on