Humbaur TANDEM-PLATFORM User manual

OPERATING
MANUAL
TANDEM-BOX
TANDEM-PLATFORM
MAKES IT HAPPEN

2 Version 07/20 Operating Manual for Tandem-Platform

Operating Manual for Tandem-Platform Version 07/20 3
Contents
1 Identification 5
2 Product description 6
3 Intended use 9
4 Use contrary to the intended 9
5 General safety information 9
6 How does the brake system works? 13
6.1 Service brake 13
6.2 Handbrake 13
6.3 Spring brake-emergency release 14
7 How does the pneumatic suspension works?
( HT 10xxxx and HT 11xxxx trailers) 14
7.1 Lifting the trailer using the pneumatic suspension 15
7.2 Lowering the trailer using the pneumatic suspension 15
7.3 Setting the trailer in the driving position 15
8 How do I couple and connect the trailer to my vehicle? 16
8.1 Setting the drawbar at the coupling height of the towing vehicle ( HT up to 11,9t) 16
8.2 Extension and retraction of the jockey wheel or the supporting base 16
7.3 Coupling the trailer 16
9 How do I couple and secure the trailer? 17
10 How do I load and unload the trailer? 17
10.1 Load distribution 18
10.2 Load protection 18
10.3 Lowering/Lifting the supporting base 19
10.4 Handling the sidewalls 19
10.5 Handling the box structure 20
10.7 Unloading the trailer 20
10.8 Handling the underrun protection 21
11 How do I maintain the trailer ? 21
12 How do I service the trailer? 23
12.1 Maintenance regime 23
12.2 Axle 24
12.3 Towing ring 24
12.4 Lubrication of the drawbar 24
12.5 Lubrication of the folding legs 24
11.6 Lubrication of the supporting base 24
12.6 Maintenance of the compressed air system 25
12.7 Tightening torque 25
12.8 Tyres 26
12.10 Plug connection 27
12.11 Changing the lights 28

4 Version 07/20 Operating Manual for Tandem-Platform
13 Accessories 29
13.1 Duomatic-coupling 29
13.2 Night park warning signs 30
13.3 Spare wheel holder 31
13.4 Fire extinguisher box 33
13.5 Plastic toolbox 34
13.6 Cutainsider Structure 35
13.7 Tarp and hoop 41
14 How do I dispose of the trailer or parts of the trailer? 44
15 What should I do in the event of a malfunction? 45
16 Service and Warranty policy 47

Operating Manual for Tandem-Platform Version 07/20 5
1 Identification
Product name: Tandem Platform HT (Humbaur Tandem)
There are 12 different types of HT trailers:
Type 1
Type designation: HT 504124
Type 2
Type designation: HT 505124
Type 3
Type designation: HT 506124
Type 4
Type designation: HT 507124
Type 5
Type designation: HT 504024-20S
Type 6
Type designation: HT 505024-20S
Type 7
Type designation: HT 506024-20S
Type 8
Type designation: HT 105224
Type 9
Type designation: HT 106224
Type 10
Type designation: HT 107224
Type 11
Type designation: HT 116224
Type 12
Type designation: HT 117224
For special vehicles deviations in box dimensions are pos-
sible.
Name and address of manufacturer:
Humbaur GmbH
Mercedesring 1
Germany-86368 Gersthofen
Tel. 0049/ (0)821/24929-0
Fax [phone]
Name and address of dealer:
Name:
Address:
Telephone:

6 Version 07/20 Operating Manual for Tandem-Platform
2 Product description
The HT (Humbaur tandem) trailers are available in four different models. Three models for the tandem platform, HT
50xxxx, HT 10xxxx and HT 11xxxx. And the other model is the tandem box trailer HT 50xxxx-20S.
The tandem trailers are designed to be attached to a towing vehicle.
The trailer has anodizes aluminium sidewalls with locks. The load can be lashed in the lashing shackles that are placed
over the entire length of the trailer. The trailer with 5 tonnes allowed total weight has maintenance free due to the rubber
spring axle. The trailer has an air brake with ABS, ALB controller and spindle handbrake. The connection to the towing
vehicle is realized with and adjustable height towing device and a towing ring.
The box trailers HT 50xxxx-20S have folding doors. These can be closed using the door locking gears.
The trailers with a allowed total weight up to 11.9 tonnes have an air system brake with EBS and spring brake.
Further, the trailers are equipped with a pneumatic suspension which adjusts the driving height depending on the load.
The bridge floor is resilient to DIN EN 283. The connection to the towing vehicle is realized with and adjustable height
towing device and a towing ring, which is adjustable with a crank.
13
4
7
810
9
5
11
6
2
HT 50xxxx Tandem-platform
1 Sidewall locks
2 Side posts
3 Sidewall
4 Front wall
5 Drawbar
6 Towing ring
7 Wheel chocks
8 Fender
9 Tyres
10 Sidewall hinge
11 Jockey wheel
1
23
HT 50xxxx front wall
1 Electrical plug(15-pin)
2 Interchangeable pneumatic brake heads
3 Crank for spindle handbrake

Operating Manual for Tandem-Platform Version 07/20 7
1
4
5
67
2
3
8
HT Tandem box trailer
1 Box body
2 Drawbar
3 Towing ring
4 Door check strap
5 Wheel chock
6 Tyres
7 Fender
8 Jockey wheel
2
1
3
4
56
78
HT Tandem box trailer rear view
1 Locks of the door
2 Door hinges
3 Door locking gear
4 Loading area
5 Rear lights
6 License plate light
7 Underrun protection
8 Folding door

8 Version 07/20 Operating Manual for Tandem-Platform
1
2345
67
8
910 11 12 13 14
HT 10xxxx and HT 11xxxx Tandem-Platform up to 11,9 rear view
1 Frontwall
2 Side posts
3 Sidewall locks
4 Sidewall hinge
5 Sidewall
6 Folding underrun protection
7 Control panel for the pneumatic suspension
8 Fender
9 Tyre
10 Wheel chock
11 Case support
12 Rear lights
13 License plate light
14 Underrun protection
1
2
345
6
7
8
HT 10xxxx und 11xxxx Tandem-platform up to 11,9 tons front view
1 Loading board
2 Drawbar height adjustment
3 Crank for the supporting base
4 Drawbar
5 Towing ring
6 Wheel chock
7 Lashing shackle
8 Supporting base

Operating Manual for Tandem-Platform Version 07/20 9
3 Intended use
The next description applies for HT 50xxxx, HT 50xxxx-20S,
HT 10xxxx and HT 11xxx trailers.
The trailers are designed to be attached to a permissible
towing. They must be loaded within the permissible total
weight. Transporting dangerous goods, like chemical ma-
terials, is not allowed. A steady weight distribution must
be possible trough the load. When loading a single load
this one must have a uniform distribution. The driver is re-
sponsible for the load and their protection. The driver has
to follow the respective country specific laws for the load.
To optimise the braking efficiency, the braking tuning must
be performed after 2000 to 5000 km, and after every
change of the towing vehicle.
Trailers must be use only in a technically flawless state
4 Use contrary to the intended
The following are considered to be contrary to the inten-
ded use for all models of the Tandem HT series:
• Load with a high payload.
• Transport persons on the trailer.
• Drive with unsecured loads.
• Unapproved structural changes to the trailer.
• Exceeding the support and trailer load.
• Transporting hot materials (e.g. Tar).
5 General safety information
The safety information is valid for all HT trailers
Danger to life!
Coupling the trailer to the towing vehicle.
Engage the trailer to the towing ve-
hicle. Since the trailer doesn’t have a
handbrake and can not be controlled,
this can lead to accidents. People can
be injured or killed, objects could be
damaged.
Coupling the towing vehicle to the
trailer. Never vice versa.
Danger to life!
Coupling the trailer to the towing vehi-
cle with a position adapter.
The position adapter stands between
the towing vehicle and the trailer. He
can be run over.
Instruct the position adapter to
never stand between the towing
vehicle and the trailer.
Danger!
Danger!
Danger to life!
Couple and uncouple the air pressure
heads.
If the order is swapped, the brake
and the trailer release the brakes. The
trailer can roll. This can lead to fatal
accidents.
Be sure to connect the air pressure
heads correctly.
Danger to life!
Loading the trailer on an area with strong slope. The trailer
is perpendicular to the slope. The focus
of the load shifted out of the center.
The trailer can tip over.
Do not load the trailer perpendicu-
lar to the slope.
Danger to life!
Loading the trailer in the uncoupled
state, without lowering the supporting
base.
The supporting base at the rear of the
trailer is not folded down for loaded
and unloaded. The trailer can tilt over.
People can be injured or killed, things
could be damaged.
Fold the supporting base down to
load and unloaded in the uncouple
state.
Danger to life!
Driving with the supporting base
down.
The supporting base can tear down in
the journey and fly around uncontrolla-
bly. This can lead to accidents. People
can be injured or killed.
Make sure the supporting base is
always folded up before the jour-
ney begins.
Danger to life!
Securing the load with the lashing
shackles or the lashing rings.
The allowable strength of the lashing
shackles or the rings is exceeded. It
can not hold the load and breakdown.
This can cause accidents. People can
be injured or killed. Objects could be
damaged.
Do not exceed the allowable
strength of the lashing shackles or
rings.
Danger!
Danger!
Danger!
Danger!
Danger!

10 Version 07/20 Operating Manual for Tandem-Platform
Danger to life!
Driving with the electrical system disconnected.
The lighting at the rear does not work.
Other road users may not recognizes
when the trailer brakes. In the dark
other road users can not see the trailer.
This can lead to injuries up to death.
Check before every ride that the
electric system is connected and
the lights are working properly.
Danger to life!
Drive with the compressed air uncon-
nected.
The trailer can not brake. This can lead
to injuries up to death.
Check the connections before each
journey.
Danger to life!
Driving with unsecured loads.
The load or load parts can be thrown
outwards the trailer. People can be
injured or killed.
Secure the load in every journey.
Danger to life!
Driving with a wrong load distribution.
The axles are unevenly loaded and can
be damaged. This can lead to acci-
dents.
Distribute the load for the journey
according to the valid laws and
regulations.
Danger to life!
Drive on an extreme sloping situation.
The trailer can tip over. If the trailer is
loaded, the danger increases, becau-
se the main focus of the load moves
upwards.
Do not drive across the slope.
Danger to life!
Danger!
Danger!
Danger!
Danger!
Danger!
Danger!
Driving with unventilated air suspension bellows.
The axles are unevenly loaded and can
be damaged. This can lead to acci-
dents.
Before departure, make sure that
the air suspension bellows are
ventilated.
Danger to life!
Drive with uncouple hitch or wrong
coupled.
The hitch will opens during the journey
and the trailers will be uncoupled. The
supply lines break off and the trailer
makes a full braking. This can lead to
accidents.
Check the coupling; be sure that
the hitch is properly closed.
Danger to life!
Drive with defective tyres or with high
pressure.
The tyres burst during the ride and the
trailer starts to roll. This can lead to
accidents.
Check the tyres like the chapter of
maintenance describe.
Danger to life!
Drive at excessive speed.
The trailer can skidding and causes the
towing vehicle skid too. This could cau-
se personal injuries, death or property
damage.
Drive according the valid laws and
regulations about the speed limits
in the country.
Danger to life!
Drawbar or towing ring damaged.
The damage has to be repair, because
these components are highly loaded,
do not load in this condition because
the components could breakdown.
Replace any damaged drawbar or
towing ring for new ones. Welding
and changes in the structure are
not allowed.
Danger to life!
Danger!
Danger!
Danger!
Danger!
Danger!