Humbaur HU Series User manual

MACHT’S MÖGLICH
Part 2 - HU, HN
Single-axle wheels-in trailer
Operating
Instructions
en
1000 Series

2 Version 2019/01 HU, HN Operating Instruction Manual (Part 2)
Notes on use/Target group
PART 2 - Original - "HU, HN" Operating Instruction Manual
This "HU, HN" operating instruction manual (Part 2) is intended for you as a user of a ready-to-use trailer.
It describes detailed steps for handling the HU, HN trailers.
It contains all of the relevant details on safe operation, care/cleaning, maintenance/servicing, troubleshooting and decom-
missioning/disposing of the trailer.
This specific operating instruction manual (Part 2) for your trailer is on the enclosed CD. You can also download it from
www.humbaur.com under the section: Download - Operating Instructions.
PART 1 - "Trailers up to 3.5 to" (General Points)
For all other general information on car trailers, see the operating instruction manual, "Car Trailers" (General Points - Part 1).
• PART 1 and PART 2 together form the complete documentation for your trailer, which you as the user should have at
your disposal.
Read this operating instruction manual carefully and completely before using your trailer for the first time and
observe all of the instructions, safety information and warnings. Comply with the steps for handling the trailer.
• Non-observance of any of the documentation can cause injuries to you and to other persons or can cause material
damage.
• Non-observance may invalidate your guarantee entitlement.
• Store this operating instruction manual carefully for the entire service life of your trailer.
• It forms part of the product and also serves as a CHECK LIST for regular inspections of your trailer.
• We advise you to store the operating instruction manual in the driver's cab and to keep it at hand in case you need to
consult it.
• It should be passed on to the new user/owner if you rent out or sell your trailer.
In addition, as a road user, you are obliged to observe all national regulations for driving a vehicle and trailer and to
comply with your obligations as the owner of a commercial vehicle.
• This includes regularly carrying out maintenance and care tasks and periodically subjecting your trailer to an overall
technical inspection.
• You must make sure that you are aware of any special stipulations that are specific to your country.
Name and address of dealer:
Name:
Address:
Telephone:
►►
►►Please enter the name of your dealer.
►►
Name and address of manufacturer:
Humbaur GmbH
Mercedesring 1
86368 Gersthofen
Germany
Tel. [phone]
Fax [phone]
[e-mail]
www.humbaur.com

HU, HN Operating Instruction Manual (Part 2) Version 2019/01 3
Table of Contents
Notes on use/Target group 2
1 Identification 4
1.1 Declaration of Conformity 4
2 Product Description 5
2.1 HU 5
2.2 HN 6
2.3 Optional accessories 7
2.4 Components 8
3 Intended Use 8
4 Foreseeable Misuse 8
5 General Safety Instructions 9
6 Loading and Unloading 9
6.1 Load distribution 9
6.2 Load securing 11
6.2.1 Projecting goods 12
6.3 Load securing with extension and accessories 12
6.3.1 Wood/aluminium cover 13
6.3.2 Flat cover 15
6.3.3 High cover 16
6.3.4 H-frame 16
6.4 Loading / unloading the trailer 17
7 Driving 20
8 Parking 20
9 Cleaning/Maintenance/Servicing 21
9.1 Care/Cleaning 21
9.2 Maintenance/Servicing 21
9.2.1 Tyres/Wheels 21
9.2.2 Gas strut 21
10 Troubleshooting 22
11 Decommissioning/Disposal 22

4 Version 2019/01 HU, HN Operating Instruction Manual (Part 2)
1 Identification
►►Put a cross next to the type of trailer you have
acquired.
►► Please read the general operating instruction
manual, "Car Trailers" (Part 1).
Product name: Single-axle wheels-in trailer
1000 Series:
unbraked
HU
Type 1: HU 752314 o
braked
HU
Type 1: HU 132314 o
Type 2: HU 152314 o
HN
Type 1: HN 132616 o
Type 2: HN 152616 o
1.1 Declaration of Conformity
Humbaur GmbH hereby confirms that all
relevant EU directives for the registration and safe use of
trailers of the 1000 series with accessories
have been complied with.
You can request a detailed EU declaration of conformity
from us separately.

HU, HN Operating Instruction Manual (Part 2) Version 2019/01 5
2 Product Description
2.1 HU
The HU is equipped with anodised aluminium drop sides.
All of the drop sides can be folded down and removed.
The locks are recessed in the drop sides.
The 15-mm floor plate is made of multiple layers
of laminated wood.
A jockey wheel on the V-drawbar is part of the standard
equipment for the HU.
The HU, unbraked, with a gross weight of up to 750 kg, per-
mits a range of applications for payloads of up to 530 kg.
The HU, braked, with a gross weight of up to 1,500 kg, per-
mits a range of applications for payloads of up to 1,216 kg.
The load is secured with the aid of 4 tie-down brackets
recessed into the profile of the trailer frame.
Optional accessories:
Side wall extension, side wall extension 700 mm, flat cover,
high cover / frame construction, cover net, spare wheel,
wood/aluminium cover, 2x telescopic prop stands, H-frame.
Sample illustrations
HU unbraked - side front
HU braked - side front
HU - as flat-bed (without drop sides / stanchions)
HU - side, from behind
HU - with high cover / frame
HU - with side wall extension 700 mm
HU - with side wall extension standard and flat cover
HU - with wood/aluminium cover

6 Version 2019/01 HU, HN Operating Instruction Manual (Part 2)
2.2 HN
The HN is equipped with anodised aluminium drop sides.
All of the drop sides can be folded down and removed.
The locks are recessed in the drop sides.
The 18-mm floor plate is made of multiple layers of lami-
nated wood.
A jockey wheel on the V-drawbar is part of the standard
equipment for the HN.
The HN, braked, with a gross weight of up to 1,300 kg, per-
mits a range of applications for payloads of up to 962 kg.
The HN, braked, with a gross weight of up to 1,500 kg,
permits a range of applications for payloads of up to
1,152 kg.
The load is secured with the aid of 4 tie-down brackets
integrated into the V-profile of the trailer frame.
Optional accessories:
Side wall extension, with flat cover, with high cover /
frame construction, with cover net, with spare wheel, with
2x telescopic prop stands, with H-frame.
Sample illustrations
HN braked - side front
HN - as flat-bed (without drop sides / stanchions)
HN - side, from behind
1
HN / HU - with H-frame
1. H-frame (bolted)
1
HU - with automatic jockey wheel
1. Automatic jockey wheel
1
HN / HU - with telescopic spindle supports
1. Telescopic spindle support (driving position)
1
HN / HU - with shock absorbers (for 100 kph)
1. Shock absorbers

HU, HN Operating Instruction Manual (Part 2) Version 2019/01 7
2.3 Optional accessories
HU (Model 1450) HU / HN HU / HN HU / HN
13/7-pin adapter 7/13-pin adapter Loose spare wheel Shock absorbers
HU / HN HU HU HU
Telescopic prop stands Automatic jockey wheel Cover net H-frame
HU / HN HU / HN HU HU
Steel grid construction Flat cover / side wall extension Side wall extension 700 mm Wood/aluminium cover
HU / HN
High cover / frame

8 Version 2019/01 HU, HN Operating Instruction Manual (Part 2)
2.4 Components
5
64
7
8
12
9
12 14
15
16
17
23 20 21
25
310 11 13
17
19 18
2422
Basic component (sample illustrations)
Accessories / extensions are explained separately
in the part description below or in the operating
instruction manual, "Car Trailers" (General Points -
Part 1).
3 Intended Use
• Transporting of goods, with the exception of
hazardous goods, e.g. explosive, chemical or liquid
materials.
• Transporting of fixed and loose loads.
• Transporting of long loads (e.g. square timber,
profiles).
• Transporting of large loads as a flat-bed variant,
without drop sides and stanchions.
4 Foreseeable Misuse
• Transporting of persons or animals.
• Driving with insufficient load securing.
• Driving with the wood/aluminium cover / drop sides
not locked.
• Driving as flat-bed without drop sides, but with
inserted stanchions.
• Driving with side wall extensions / H-frame not
bolted to stanchions.
• Non-observance of the safety instructions in the
operating instruction manual, "Car Trailers" (Part 1).
1. Coupling ball
2. Drawbar support
3. V-drawbar
4. Electric plug
5. Safety cable
6. Overrun hitch with handbrake lever,
brake linkage, spring mechanism
7. Jockey wheel
8. Front drop side (facing drop side)
9. Front reflector / white reflector or
front position lamp
10. Stanchion
11. Side reflector / yellow reflector
12. Lateral drop side
13. Wheel (tyre)
14. Mudguard (with / without mud flap)
15. Tie-down bracket, recessed
16. Rear drop side (back drop side)
17. Cargo bed / loading platform
18. Chassis
19. Wheel chock
20. Tail light, combined with triangular
reflector, indicator, brake light, rear
fog light, possibly reversing light,
position lamp
21. Drop side hinge
22. Number-plate holder
23. Underride protection
24. Rear reflector / red reflector
25. Drop-side lock

HU, HN Operating Instruction Manual (Part 2) Version 2019/01 9
5 General Safety Instructions
Driving with folded down / unsecured
drop sides / side wall extensions.
Folded down / unsecured drop sides and side wall extensions
may be torn off and flung away while driving - risk of impact /
crushing!
Folded down drop sides cover the vehicle lights / vehicle mark-
ings - increased accident risk!
►► Before driving off, check that all drop sides / side wall
extensions are closed and secured.
►►Remove all drop sides / side wall extensions /
stanchions when using the trailer as a flat-bed.
Single-axle trailer snaps open!
Single-axle trailers can snap open during loading /
unloading and parking, and crush fingers / hands /
feet or collide with you.
►►Only park the empty trailer on the jockey
wheel or the drawbar support.
►►Only couple/uncouple the trailer when it is empty.
►►Make use of the telescopic prop stands during
loading / unloading and / or couple the trailer to
the towing vehicle.
Observe the other general safety recommenda-
tions in the operating instruction manual, "Car
Trailers" (General Points - Part 1).
WARNING
CAUTION
6 Loading and Unloading
Single-axle trailers may only be loaded and
unloaded with goods after being coupled to the
towing vehicle.
6.1 Load distribution
CAUTION
Negative / insufficient drawbar load!
Maximum permissible drawbar load exceeded!
A negative / too-low drawbar load or exceeding the maximum
permissible drawbar load may result in accidents.
►►Distribute the weight evenly across the trailer.
►►Do not fall below the minimum drawbar load of the
trailer (for trailers up to 750 kg gross weight, this is:
4% of the towed load or 25 kg).
►► Do not exceed the maximum permissible drawbar load
of the towing vehicle and trailer coupling.
►►Where possible, make use of the maximum permissible
drawbar load (see COC papers, Section 19).
►► Observe the information on the maximum
permissible drawbar load in your vehicle papers
and the trailer coupling.
►►Do not exceed the maximum permissible drawbar load
of the trailer. Observe the information on the maximum
permissible drawbar load in the COC papers, Section 19.
Avoid turning your load into a projectile.
• The static force [m] is used as a point of departure
for dimensioning the means to secure the load.
• As the speed increases, so does the inertia /
centrifugal force of the load.
• Sample calculation:
[m] = 1 kg ~ 1 daN static force
[v] = acceleration speed of mass
[Ekin] Formula: Ekin= m • v2
2
at 0 kph = 1 kg kinetic energy
at 40 kph = ~ 600 kg kinetic energy
at 80 kph = ~ 2,400 kg kinetic energy

10 Version 2019/01 HU, HN Operating Instruction Manual (Part 2)
100 kg
0 km/h

Vehicle standing still

40 km/h
~ 6000 kg
Fully braked at 40 kph

~ 24000 kg
80 km/h

Forces acting on trailer when fully braked
Conclusion:
• When doubling the speed, the kinetic energy that
can be released by the unsecured load when the
trailer is fully braked increases four-fold.
• Wrongly / poorly distributing the load results in
serious accidents, even at low speeds.
• Overloading the trailer means intentionally producing
a risk, which can result in the trailer skidding and
meeting with a serious accident even after a minor
steering manoeuvre, a bump in the road or a gust of
wind!
0.5
0.5
0.5
0.8
kg
Forces to be secured against skidding
• Securing at the front (when fully braked)
0.8 or 80% of the static force:
e.g. 1,000 kg must be secured with 800 daN
• Securing at the side / rear
(when swerving / starting / driving round bends)
0.5 or 50% of the static force:
e.g. 1,000 kg must be secured with 500 daN
►►Counteract the potential release of forces by:
• Correct load distribution
• Using adequate means to secure the load in
accordance with its weight (tie-down equipment,
tie-down points)
• Using anti-skid materials (anti-slip mats)
• Correctly attaching the load, e.g. with a cover net,
tarpaulin or cover
• Adapted speed
• Additional accessories (H-frame, side wall extensions)
Correct load distribution
 


kg
kg
kg
Load correctly distributed
• Centrally aligned (balanced load)
• Heaviest load positioned above axle
• Form-fitted at front and rear
Incorrect load distribution
kg


Load incorrectly distributed
kg


Load incorrectly distributed
• Eccentric alignment (one-sided load)
• Too far forward or too far back
• Load not form-fitted
• Proper tie-down not possible

HU, HN Operating Instruction Manual (Part 2) Version 2019/01 11
6.2 Load securing
►►Preferably secure the load as a combination of
form-fitting and force-fitting:
- Force-fitted by: direct tie-down of the load.
- Form-fitted by: supporting the various components of
the load against each other, against the drop sides and
against the cargo-bed extensions, without spaces in-be-
tween.
Loose loads not secured
1
Secured with cover net
1. Cover net
2
Secured with flat cover
2. Flat cover
34
Secured with form-fitting and tie-down
3
4
56
Secured with tie-down (on flat-bed)
3. Lashing strap
4. Edge protector / edge slider
5. Securing the bottom of the load (squared timbers,
pallets, anti-slip mats)
6. Force-fitted loading unit (strapping)
7
Wrongly secured / loaded
7. Long load, supported on rear drop side

12 Version 2019/01 HU, HN Operating Instruction Manual (Part 2)
6.2.1 Projecting goods
Goods that project over the cargo bed or drop
sides must be marked in accordance with Section
22 of the StVO (German Road Traffic Act).
> 1 m
1
Marking goods
1. Sign / flag (30 cm x 30 cm) or
cylindrical body (ø 35 cm x 30 cm), bright red
►► Check that your load does not exceed the maximum
permissible values according to Section 22, "Goods", of
the StVO.
►►Mark any projecting goods.
- Make use of the prescribed means for doing so.
►►Do not load the goods too far forward.
- The required swerving range for driving around
bends must remain open!
Restricted swerving range - risk of collision!
Supporting the load on the front drop side and allowing it to
project forwards reduces the swerving range when driving
around bends - accident risk!
►►Remove the front and rear drop side.
►►Before driving off, check that the restricted
swerving range will allow your towing vehicle to
drive around bends.
►►Adjust the distribution of the load (towards the
middle of the drawbar) if necessary.
WARNING
6.3 Load securing with extension and
accessories
Tying down goods
3
1
2
HU - tie-down points
1. Loading platform
2. Tie-down brackets, recessed
3. Frame profile
3
1
2
HN - tie-down points
1. Loading platform
2. Tie-down brackets, recessed
3. V-frame profile
1
Tie-down points - arrangement on cargo bed
1. Tie-down points (HU / HN)
►►Tie down the load.
- Do not exceed the maximum permissible tie-down
forces per tie-down point.
►►Take note of the sticker providing information about the
maximum tie-down forces on the trailer.

HU, HN Operating Instruction Manual (Part 2) Version 2019/01 13
1
Optional / additional tie-down points
1. Tie-down ring recessed in tie-down groove in loading
platform
2
Optional / additional tie-down points
2. Folding rings on the loading platform
1
2
3
Tie-down of load
1. Tie-down point
2. Tie-down equipment (tension belt)
3. Tie-down force information
►► Adhere to the maximum tie-down force for the tie-down
equipment (e.g. tension belts).
6.3.1 Wood/aluminium cover
Functional explanation
• The wood/aluminium cover is used for the protected
transport of sensitive goods.
• The wood/aluminium cover can be locked with a key
and thus protects your goods against theft.
• The loading volume is increased by the internal height
of the wood/aluminium cover, i.e. by 185 mm.
• The wood/aluminium cover is supported by gas struts
for easier opening. The gas struts keep the cover in
an open position.
• The wood/aluminium cover is available for the HU
type. It has been specifically adapted to the trailer size.
WARNING
Driving with cover
open / unlocked!
The cover can spring open while driving and be
torn off / deformed. The goods may be flung off.
The trailer may start to skid and be uncoupled
from the towing vehicle.
►►Do not drive with the cover open / half-open.
►►Before driving off, check that the cover is
properly closed and locked.
Presence in the trailer with the cover closed!
Risk of suffocation due to lack of oxygen in loading area.
►► Avoid being in the closed trailer.
►►Do not transport any live animals.
►►Before closing the cover, check that there are
no persons / animals in the trailer.
CAUTION
Operating the cover!
You may catch your hands/body in the cover or
bump your head while folding the cover down.
►►Operate the cover carefully.
- Do not allow the cover to fall shut on its own.
►►Use the handle to operate the cover - do not reach over the
closing edge or into the transmission linkage.
►►Use the pull strap to close the cover and
hold it firmly by the handle.

14 Version 2019/01 HU, HN Operating Instruction Manual (Part 2)
Risk areas
CAUTION
Worn gas strut!
Where a gas strut is leaking / worn, the cover may
fold down on its own and hit / bump you.
►►When operating the cover, ensure that it
does not fall down by itself.
►►Have any faulty / worn gas struts replaced
immediately by a specialised workshop.
NOTICE
Overload on cover / rail!
The cover / rail may become deformed or break.
►►Limit the weight on the cover / rail to a maximum of 60 kg.
►►Do not climb onto the cover / rail.
kg
max. 60
Opening the foldable front drop side!
The transmission linkage for the gas strut is attached to the front
drop side. Opening the front drop side results in deformation of
the cover. It may fall down.
►►Never open the front drop side.
►►Do not remove the lock securing screws.
Operating the cover
123
4
6
7
5
9
10
8
Wood/aluminium cover with rail
1. Cover
2. Lock
3. Handle
4. Pull strap
5. Gas strut (front drop side)
6. Transmission linkage
7. Front drop side, fixed
8. Lateral drop side, foldable
9. Gas strut (rear drop side)
10. Rear drop side, foldable
Unlocking

Lock unlocked
►►Use the key to open the lock.
►►Turn the lock into a vertical position.
- The cover is now unlocked.
Opening
3
5
10
Cover open
►►Take hold of the handle and lift the cover.
- The gas struts support the opening of the cover
and hold it open in its final position.

HU, HN Operating Instruction Manual (Part 2) Version 2019/01 15
Closing


9
4

8
Closing the cover
►►First close the rear and side drop sides.
►►Take hold of the pull strap and pull the
cover downwards until you can reach
the handle.
►►Push the cover completely shut.
- Ensure that the lock is in an open position.
Locking

Lock locked
►►Turn the lock into a horizontal position.
- The cover is closed.
►►Use the key to lock the lock.
- The cover is locked.
The goods must be secured, even in a closed
trailer.
►►Secure the goods within the loading area.
6.3.2 Flat cover
HN / HU trailers with a flat cover have an addition-
al lateral bracing. The lateral bracing supports the
centre of the flat cover.
Any water / load accumulating on the flat cover
may cause it to sag and damage it.
2
13
Load securing with a flat cover
1. Flat cover
2. Side wall extension
3. Staple
1
3
2 4
Operating the flat cover
4. Lateral bracing, fitted
►►Fit the lateral bracing to the drop sides at the centre
of the side drop sides.
- Ensure that the lateral bracing is arranged at a
90° angle to the side drop side.
Instructions for operating the flat cover are given
in the operating instruction manual, "Car Trailers"
(General Points - Part 1).
The flat cover / high cover can be secured against unau-
thorised opening using a fastening rope.
►► Guide the fastening rope through all the closed staples
and tie the ends of the rope together.
- Where necessary, use a lock such as a shackle lock to
secure the ends.

16 Version 2019/01 HU, HN Operating Instruction Manual (Part 2)
6.3.3 High cover
The HN / HU trailers are attached to the stanchions
with a hoop frame and high cover and secured to
the drop sides on all sides.
The high cover can be opened at the back and
sides for easy loading / unloading.
The drop sides can be folded down for loading /
unloading.
3
4
1
2
Load securing with high cover / frame
1. High cover
2. Belt
3. Buckle
4. Staple
1
3
4
2
Securing the high cover / flat cover
1. Fastening rope
2. Rope termination
3. Lock (e.g. shackle lock)
4. Rope ends for lead seal
Instructions for operating the high cover / frame
are given in the operating instruction manual,
"Car Trailers" (General Points - Part 1).
6.3.4 H-frame
The HN / HU trailers are attached to the front
stanchions with an H-frame and secured.
The H-frame is used to transport and secure long
loads.
Long loads must be secured as individual loading
units.
It is not permitted to drive with loose loads on
the H-frame.
The loads must be secured and tied down
to the trailer or H-frame.
3
4
1
2
Load securing with H-frame
1. H-frame
2. Lashing strap
3. Loading unit (long pipes, rods, planks)
4. Securing the loading unit
►► Use tension belts to tie-down the load to the H-frame and
directly to the tie-down points on the loading platform.
- Ensure that the load cannot slide and is safely posi-
tioned / distributed.
Instructions for mounting / removing the H-frame
are given in the operating instruction manual,
"Car Trailers" (General Points - Part 1).

HU, HN Operating Instruction Manual (Part 2) Version 2019/01 17
6.4 Loading / unloading the trailer
Make sure that the trailer is secured so
that it cannot roll away.
►►Make sure that road traffic safety is not impaired
when loading and unloading the trailer.
►►If necessary, use additional signalling devices,
e.g. signs, barriers.
6.4.1 Drop sides / Side wall extensions
Driving as flat-bed with stanchions inserted!
The stanchions may be flung out while driving - accident risk!
Someone may be injured - impact risk!
►►Remove all stanchions before starting to drive.
►►Remove all drop sides before starting to drive.
21 3
Removing stanchions
1. Stanchion
2. Stanchion bracket
3. Drop sides
Driving as flat-bed (drop sides / stanchions removed)
NOTICE
Opening the main drop side while the
side wall extension is in place!
The side wall extensions are mounted on the main drop sides.
Following the wrong sequence when opening the drop sides may
result in damage to them.
►►Remove the side wall extension before opening
the main drop side.
WARNING
Opening
3
1
2
Unlock locks
1. Tarpaulin
2. Covered lock
3. Side wall extension
►► Unlock the recessed locks on both sides.
- While doing so, hold the drop side / side wall extension
firmly with one hand.
4
5
Side wall extension removed
4. Stanchions
5. Rear drop side, closed
►►Carefully remove the side wall extension.
- Store it where it is safe from damage.
6
Rear drop side folded down
6. Rear drop side, folded down
►►Carefully fold down the drop side in a controlled manner.

18 Version 2019/01 HU, HN Operating Instruction Manual (Part 2)
1
2
3
Drop sides folded down / stanchions removed
1. Stanchions, removed
2. Lateral drop side, folded down
3. Rear drop side, folded down
►►The drop sides can be folded down, depending on
the loading / unloading process.
►► To facilitate loading / unloading and to prevent damage,
the stanchions may be removed.
Closing
1
2


Stanchions inserted / close drop sides
1. Locking lugs on stanchions
2. Main drop sides
►► Insert all stanchions into the stanchion brackets.
- Ensure that the locking lugs point in the direction
of the cargo bed.
►► Fold up the main drop sides.
- Ensure that the locks are open.
►►Lock all drop-side locks.
While doing so, hold the drop sides firmly with one hand.
- Ensure that they correctly engage with the
locking lugs of the stanchions.
Mount side wall extensions
123
Mount / lock side wall extension
1. Main drop side
2. Side wall extension
3. Lock
►►Mount the side wall extension on the locked
main drop side.
- Ensure that the lug on the lower edge of the side
wall extension points inwards towards the
cargo bed and that the locks point outwards.
►►Close the locks one by one.
- While doing so, hold the side wall extension with
one hand.
124
Side wall extension inserted / locked
4. Lugs on the lower edge of the side wall extension

HU, HN Operating Instruction Manual (Part 2) Version 2019/01 19
Remove the main drop sides
123
Remove the main drop side
1. Drop side hinge
2. Securing split pin
3. Main drop side
►►Remove the securing split pin from the
drop side hinge.
►►Fold the drop side into a horizontal position.
►► Carefully pull out the drop side in the direction that is
now unobstructed.
►►Put the drop side where it is safe from damage.
Mounting
2
Mount / secure the main drop side
►►Slide the drop side onto its hinges in a horizontal position.
►►Push the securing split pin into one of the hinges
and open the securing split pin slightly.
►►Fold up the drop side.
Ensure that the locks are open.
►►Lock the locks on both sides.

20 Version 2019/01 HU, HN Operating Instruction Manual (Part 2)
6.4.2 Telescopic prop stands
HN / HU trailers can be optionally equipped with
swivelling telescopic prop stands.
The supports may only be retrofitted at the
attachment points provided. The frame already has
drill holes for fitting the supports.
Read and observe the assembly instructions.
1 2
Telescopic prop stands, swivelling
1. Chassis
2. Telescopic prop stand
1
2
3
4
Support position for telescopic prop stands
1. Plug bolt, inserted
2. Safety chain
3. Support body
4. Adjustable support
Instructions for operating the telescopic prop
stands are given in the operating instruction
manual, "Car Trailers" (General Points - Part 1).
12 34
Driving position of telescopic prop stands
►►Secure the telescopic prop stands in the supporting
and driving position, using the plug bolt.
- The plug bolt must be pushed through the
free hole from the top.
7 Driving
Before driving off, make sure that the maximum
permissible loads (load capacity and drawbar load)
are not exceeded.
Observe the maximum permissible towing load
and drawbar load of your towing vehicle and the
trailer coupling.
►►Where required, check the weight information for the
goods to be loaded.
►► Carry out a departure check (see operating instruction
manual, "Car Trailers" (General Points - Part 1))
8 Parking
Observe the general safety and warning instruc-
tions on parking your trailer safely in the operating
instruction manual, "Car Trailers" (General Points
- Part 1).