Bigab T-7 User manual

INSTRUCTION MANUAL
T- (T-8)
Instructions
v1 - 2012
V1.1-2016-EN
Original instructions

Dump trailer T-7
2© AS FORS MW
INTRODUCTION .......................................... 
Company presentation ...........................................
Product presentation...............................................
TECHNICAL SPECIFICATION ...................... 
DIMENSIONAL DIAGRAM........................... 
GENERAL DESCRIPTION OF
THE PRODUCT ............................................. 
Principal components and
functional devices.....................................................
SAFETY REGULATIONS..............................
Hazardous areas....................................................... 
Trailer safety .............................................................. 
SAFETY DEVICES........................................
Safety support..........................................................
Location of decals on the trailer ........................
Presentation of decals ........................................... 
INSTALLATION OF THE PRODUCT............
Inspection of new trailer.......................................
Adjustments..............................................................
COUPLING/UNCOUPLING THE TRAILER . 
Safety aspects, connection/disconnection... 
Marking of hydraulic hoses..................................
DRIVING THE TRAILER.............................. 
Safety aspects while driving................................
Loading of towing eyelet and coupling..........
Table of load weights.............................................
Working in extreme conditions......................... 
TIPPING THE TRAILER................................
Safety aspects when tipping ..............................
ELECTRICAL CIRCUIT DIAGRAM.............. 
Wiring diagram ....................................................... 
Spare parts................................................................ 
HYDRAULICS CHART .................................
Schedule..................................................................... 
Spare parts.................................................................
HANDLING DURING SERVICE/
MAINTENANCE..........................................29
Safety aspects during
service/maintenance .............................................29
MAINTENANCE/SERVICE.......................... 1
Schedule for maintenance intervals.................1
Procedure during maintenance/service ........2
TROUBLESHOOTING.................................38
SPARE PARTS ............................................. 
In this manual, we have gathered all the information regarding a particular procedure in a single same chapter. As always, safety issues are
of the utmost importance and are presented at the start of the instruction manual, along with technical data and dimensional diagrams.
The "Installation" chapter contains important information for familiarising yourself with the trailer. The chapter on the use of the trailer,
such as coupling/uncoupling, driving and tipping, must be read before you start to use the product, as must the safety aspects and safety
devices. Be sure to extend the service life of your product by following the information in the "Service/Maintenance" chapter.
CONTENTS
CONTACT INFORMATION:
Tel.: +   
Fax: +   
Email: [e-mail]
Factory:
AS FORS MW
Tule 
  Saue
Estonia
Tel.: + ()   
Fax: + ()   
Email: aftermarket@
forsmw.com
Aftermarket:
We speak English and Swedish.
FMW Farma Norden AB
Hornsväg 
  Norrköping
Sweden

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INTRODUCTION
High demands are placed on manufacturers regarding conformance to directives that have been drawn up
for their products. This product is covered by the Machinery Directive, and the CE marking indicates that it
satises the requirements in the Directive. On delivery, it is incumbent upon the dealer to provide operating
instructions for the product.
Company presentation
AS FORS MW was established in Estonia in .The company develops, manufactures, markets and sells, via
dealers, the three market-leading brands: BIGAB hooklift trailers and dump trailers, FARMA lumber trailers
and cranes, and NIAB tractor processors. The company comprises the parent company AS FORS MW, as well
as the subsidiary companies Farma Norden AB (Norrköping, Sweden) and Fors MW/China (China). You can
read more about both the product you have selected and our -year journey on our website, www.forsmw.
com, and on our blog, www.forsmw.blogspot.com
Product presentation
The BIGAB dump trailer is a relatively simple yet robust dump trailer designed to withstand hard use which
is just as suitable for contractors as for farmers. The dump trailer has a trailer bed and sides constructed in
 welded steel with robust reinforcements. The trailer loads  tons and has a tipping angle of  degrees.
The dump trailer is equipped as standard with ./ x . tyres, bolted drawbar and mechanical hung
tailgate with side doors. The trailer can be further equipped with -wheel drum brakes and hydraulic
stabiliser legs. The trailer meets the requirements necessary for operation at  km/h (Swedish market) or 
km/h (Norwegian market).
We understand your curiosity and desire to put your BIGAB dump trailer to work, but we ask you to spend a
little time reading through this instruction manual before you start using the machine. If not used correctly,
theBIGAB dumptrailercancauseunwantedoperationalstoppagesand,in theworstcase,itcanbedangerous.
A little time spent reading this instruction manual could save you both time and money in the future. For
your safety, it is extremely important that you follow the instructions presented in this instruction manual.
EU-declaration of Conformity
Fors MW AS, represented by Leif Fors,
Tule 30
76505 Saue
Estonia
The technical file compiled by Leif Fors;
Hereby confirm that this equipment:
1. Vehicle type: complete lumber trailer with crane
2. Manufacture: (FARMA) CT 6,0-9
3. Chassis number: CT096007792
4. Manufacture code: CT 6,0-9
5. Manufacture year: 2010
Consist of trailer, crane, grapple.
Is manufactured accordingly to demands in directive 2006/42 EG and wherefore can
be used mounted together with over equipment to provide a machine.
The equipment can’t be used before the machine or the formation that it will take
place in is accordingly to the demands of the EG machine directive.

Signature:
Leif FORS, CEO
Tule 30
765 05 Saue
Estonia
Tel: [phone]
Fax: [phone]
Reg. no. 10094723
E-mail: [email protected]
Webb: www.forsmw.com
VAT-no. EE100189685
EU declaration of conformity with Directive / EC

Dump trailer T-7
4© AS FORS MW
TECHNICAL SPECIFICATION
Technical data Dump trailer T-
Total length  mm
Total width  mm
Height  mm
Internal dimensions of load surface . x . x .
Load capacity in m . m
Panel thickness at bottom/sides  mm/ mm
Trailer dead weight  kg
Max. payload  kg
Total weight with load  kg
Axles  x 
Brakes -wheel brakes as optional
extra
Brake force requirement  bar
Parking brake -
Max. speed km/h
Towing eyelet, vertical/horizontal max. ,/ kg
Load on towing eyelet, empty trailer  kg
Load on towing eyelet, fully loaded
trailer  kg
Tipping angle °

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DIMENSIONAL DIAGRAM
K K
247
1883
1510
89
566
417
234
81
170
1592,5
9
2511,44
4009
SECTION
K-K
990
66°
4570
919
6028
450
4009
3654
917

Dump trailer T-7
6© AS FORS MW
990 874
701
1100
3675
467
628
871
1500
5304
450
1788
4011
917

Dump trailer T-7
www.forsmw.com 7
1788
2174
701
2250
2307
400
450

Dump trailer T-7
8© AS FORS MW
GENERAL DESCRIPTION
Principal components and functional devices
The trailer consists of the following principal components and functional devices.
The towing eyelet is suitable for
hitch hooks. It is very important
that the towing eyelet is checked for
defects every time the trailer is used.
The towing eyelet must be greased
regularly. The towing eyelet must be
replaced at least once a year.
The trailer bed loads
5.6m3 with 5 mm
plate thickness at the
bottom and 3 mm at
the sides.
Bolted drawbar – The trailer is
equipped with a bolted drawbar for
optimum comfort and increased
exibility since it oers the
opportunity to use the drawbar at
dierent heights as required.
Tyres – The trailer
is delivered with
11.5/80 x 15.3 tyres,
but other tyres are
available as optional
extras.
The chassis is constructed
from rectangular steel
sections.

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Tailgate
The trailer is equipped with a mechanical hung tailgate with side doors.
The illustration shows the hung tailgate and that the side doors can be opened fully.
NOTE! Do not drive with the side doors open, because the doors will then extend beyond the trailer's
normal dimensions. Accidents can occur if the driver is not careful.
The trailer is delivered with hung tailgate with locking catches on the bottom edge. It has notches for
spreader chains. The doors are released on the left side by using a mechanical handle.

Dump trailer T-7
10 © AS FORS MW
NOTE! It is important that you check the doors before driving o to make sure they are securely locked
after they have been opened. Checking this is the driver's responsibility.
Tyres
The dump trailer is equipped as standard with:
11.5/80x15.3 A8. 40 km.
Name Hose Wheel
dim
Width
mm
Diameter
mm
Load
Kg
Air pressure
Bar
6-161-205 10Pr YES 9.00x15.3" 297 844 1950 4.6
The trailer can be equipped with optional extras:
400/60x15.5” A8. 40 km.
Name Hose Tyres
pattern
Wheel
dim
Width
mm
Diameter
mm
Load
Kg
Air pressure
Bar
400/60x15.5” Rib 900 13.00x15.5" 405 875 2725 4.50

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Hydraulic system
The trailer is equipped with a hydraulic system for the various work stages.
Electrical system
The trailer is manufactured with a 12V electrical system.
Braking system
The trailer can be equipped with a hydraulic braking system. A pneumatic braking system is also
available as an optional extra. Note! The hydraulic pressure in the brake pipes should not exceed 160
bar. If too high a hydraulic pressure is used, the brake arm cam can go over the centre and lock the
brakes.

Dump trailer T-7
12 © AS FORS MW
SAFETY REGULATIONS
IMPORTANT!
READ THE ENTIRE INSTRUCTION MANUAL BEFORE USING THE TRAILER. CONSULT THE
MANUAL IF YOU ENCOUNTER ANY PROBLEMS. THE TRAILER HAS A DATA PLATE.
BEFORE USING THE TRAILER, MAKE SURE THAT THE FACTORY SETTINGS HAVE NOT
BEEN CHANGED AND THAT NO PARTS HAVE COME LOOSE DURING TRANSIT. MAKE
SURE THAT ALL SAFETY FEATURES AND SIGNS ARE IN PLACE.
HAZARDOUS AREAS
To avoid injuries or damage while working with the trailer, the dump trailer must be
operated by only one person. Do not allow anyone inside the trailer's hazard zone,
which is 8 m around the trailer.
Never let anyone stand behind or by the side of the trailer when tipping the trailer bed.
Warning – risk of crushing due to moving parts!
Unauthorised persons are not permitted near the machine when it is in use or being repaired. It is
strictly forbidden for anyone under the inuence of alcohol or drugs to work with the trailer.
Trailer safety
To ensure the safe use of the product, for trouble-free operation and for the warranty to be
valid, maintenance must be carried out in accordance with the service described in the chapter
"Maintenance/Service".
The trailer must be loaded evenly and must be on level ground when tipping. Consult the section
"Tipping the trailer" to avoid overturning. The trailer is equipped with lashing loops.
Check the locking pins before tipping.
Do not remove the tipping cylinder's oil hose during tipping.
The estimated coupling load from drawbar to tow hook at maximum and evenly distributed load is
1260 kg.
The towing eyelet is adjusted to the tow hitch on the towing vehicle. It is very important that the
towing eyelet is checked for defects every time the trailer is used. The towing eyelet must be replaced
at least once a year. It is the user's responsibility to ensure that this is done. Note! Never weld onto the
towing eyelet, as this will change the material's strength.

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Pay attention to the warning decals.
The trailer is not known to cause noise exceeding 70 decibels.
Transport of people or animals in the dump trailer is not permitted.
WARNING!
The manufacturer does not accept any liability for damage that is caused by
overloading or which arises in the case of drawbar failure if the trailer detaches from
the vehicle. The maximum load is stated in the technical data.

Dump trailer T-7
14 © AS FORS MW
SAFETY DEVICES
Safety support
Always use the safety support when carrying out service in the tipping position. The safety support
must not be used under any circumstances when the trailer bed is loaded.
Safety support
Location of the decals on the trailer
The trailer is equipped with a range of decals for both safety and information. Check that all signs are
in the correct position.

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Presentation of decals
WARNING!
Warning triangle and instruction manual decal.
The trailer is supplied with a warning triangle alongside the instruction manual decal in
order to emphasise the requirement for the user to read the entire instruction manual ca-
refully before starting to use the trailer. Ignoring this can entail a danger to life.
INFORMATION!
Decal for the use of safety equipment.
These decals encourage the user to use the appropriate safety equipment in order to avoid
injury when using the trailer.
DANGER!
Risk of crushing injuries
There is a risk of being trapped or crushed during work and maintenance.
WARNING!
Hazardous area
It is potentially fatal to stand between the trailer and the towing vehicle when the trailer is being driven,
moved with frame steering or when other functions are activated between trailer and tractor. As the dri-
ver, you must always ensure that the area around the machine is free of people.
WARNING!
It is totally forbidden to board the trailer when it is in motion.
This can potentially be fatal.

Dump trailer T-7
16 © AS FORS MW
WARNING!
Warning – If the rear of the tractor lifts, a hazardous movement has started.
When the rear of the tractor starts to lift this is a warning that you have started a hazardous movement.
Note! One copy of this warning decal is included with your trailer on delivery. It must be placed conspi-
cuously in the tractor's cab. If you would like to more, they can be ordered free of charge from our after-
market department. See the first page of the instruction manual for contact details.
WARNING!
Risk of slipping
There is a risk of slipping as the surfaces of the trailer can be slippery due to precipitation combined with
pre-existing oil and/or clay on the surface.The ground around the trailer can also be slippery, because the
tyres can tear up the surface and expose clay and soil.
DANGER!
Hydraulic uid under pressure
Hot hydraulic fluid at high pressure may occur in the hydraulic system. Take care when connecting, and
replace damaged hoses.
WARNING!
Warning – contact with electrical power lines
The trailer may only be driven in the transport position. Never drive or tip with raised trailer bed. If you
drive with the trailer bed raised, you risk colliding with obstacles such as bridges, electrical power lines
etc.
WARNING!
Always use the safety support during service.
It is absolutely prohibited to lean in under the raised frame, unless it is secured with
the safety support. Under no circumstances may the trailer be carrying a load or a
container when using the safety support.

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WARNING!
Max. load
It is absolutely forbidden to load more than the amount your model is intended to handle.This can result
in danger to you and your surroundings. For information on your model, please consult the technical
data.
WARNING!
Max. strain on towing eyelet
Ensure that you do not load so the strain on the towing eyelet exceeds that permitted by statute and
regulations. The trailer is designed for a maximum strain of  kg on the towing eyelet. The strain is
largely determined by the way the load is distributed on the trailer bed, and it is the user's responsibility
to ensure that this is not exceeded.
INFORMATION
Wheel inspection
The wheels must be tightened and the brakes checked regularly.
INFORMATION
Lubrication
This decal is used to show the importance of regular lubrication of the trailer.
INFORMATION
20
KG
MAX LAST INKL FLAK: TIPPNING
MAX LOAD INCL BODY:TIPPING
MAX. GewIChT INKL. CONTAINer BeI KIPPeN
TILLVerKNINGSNUMMer
SerIAL NUMBer
herSTeLLUNGSNUMMer
TILLVerKNINGSÅr
YeAr OF PrODUCTION
SerIeNNUMMer
PrODUKTTYP
PrODUCT T YPe
PrODUKTTYP
MAX LAST INKL FLAK: FLAKVÄXLING
MAX LOAD INCL BODY: rOLL ON/rOLL OFF
MAX. GewIChT INKL. CONTAINer BeI AUF/ABhAKeN
KG
KG
KG
KG
TOTALVIKT
TOTAL weIGhT
ZUL. GeSAMTGewIChT
AXeL TrYCK
AXLeLOAD
ZUL. AChSLAST
MAX DrAGBeLASTNING KrOK
MAX PULL PreSSUre hOOK
ZUL. STÜTZLAST
Data plate

Dump trailer T-7
18 © AS FORS MW
Tightening torque

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INSTALLATION
Inspection of your new BIGAB dump trailer
The following checks must be made before the trailer is taken into use:
It is strictly prohibited to use the trailer if its safety devices are damaged. For more detailed
information about the safety devices, see the chapter "Safety Devices".
Check that the wheel nuts are tight. See the table for tightening torques. Recheck after 2–3 hours
driving and then 2–3 times a year.
Check that the indicators, brake lights and taillights are working. For information on the electrical
system, consult the wiring diagram.
Check that the hydraulic connections for tipping and brakes are correctly connected.
Bleed the brakes if the brakes are optional extras. See Maintenance/Service for information on how to
do this.

Dump trailer T-7
20 © AS FORS MW
COUPLING/UNCOUPLING THE TRAILER
Positioning of parking chocks
The illustration shows where parking chocks should be placed when coupling/uncoupling the trailer
and when parking.
Safety aspects when coupling/uncoupling
The following must be checked before each use:
Inspect the trailer carefully.
Check the air pressure in the tyres. This must always be at least the recommended pressure. See
Maintenance/Service for more detailed information.
Check that all connections are correctly connected.
Check that the trailer is locked to the towing vehicle.
Check the towing eyelet and the coupling device on the tractor.