Arctic Machine AM TEHO Series User manual

CENTRE-MOUNTED
SCRAPER
FOR TRUCKS
TEHO 5
• OWNER’S MANUAL
• SERVICE INSTRUCTIONS
• SPARE PARTS

2
CERTIFICATE OF STANDARD COMPLIANCE
ARCTIC MACHINE OY
Manufacturer
Karsikonmäentie 1, FIN-77800 IISVESI, FINLAND
Address
We hereby certify solely on our own responsibility that the following
product:
THE CENTRE-MOUNTED SCRAPER
AM TEHO 5___________/__________________/_________________
Model Serial Number Production date
is manufactured according to the standards:
SFS-EN 292-1, SFS-EN 292-2,
SFS-EN 414,
VN 1314 21.12.1994 and
89/392/ETY including its modifications.
Suonenjoki_____________________/__________________________
Date and place Signature
The copying of this owner’s manual is prohibited according to copyright law.
01/2001
word:\u\marja\kohjeet\englanti\ealuster\teho5e.doc

3
WARRANTY POLICY FOR HYDRAULIC COMPONENTS AND EQUIPMENT/SPARE
PARTS DELIVERED BY ARCTIC MACHINE OY
1) Warranty period;
1.1 Warranty is granted for new equipment, to its first owner.
1.2 The warranty period for equipment manufactured by AM is 12 months. The
warranty becomes valid on the delivery date of the equipment.
1.3 The warranty period for systems installed by AM is 12 months starting from the
implementation date, provided that the used hydraulic oil meets AM's requirements
(stated in part Hydraulic Oil in our manual).
2) Requirements;
The warranty presumes that during installation, use and maintenance Arctic Machine's
owner's manual and service instructions are followed. When damage occurs the component
must always be returned to AM within two weeks if the customer wants that it is under
warranty. The return of equipment/components must always be discussed with the Seller
beforehand. Furthermore, the warranty is only valid provided that the terms of payment have
been met accordingly.
3) Extension of the warranty;
3.1 The warranty applies to material or manufacturing defects.
3.2 Warranty does not cover normal wear of the product or defects caused by faulty operation
or misapplication.
3.3 The warranty does not compensate defects, which are due to installations, maintenance,
corrections done by others than AM or if other than original spare parts are used (e.g. wrong
size or model). Also defects caused by overloading are not compensated.
3.4 The warranty will not compensate for equipment, which has been altered without the
permission of the manufacturer.
3.5 The warranty will not compensate the damage caused by faulty equipment, costs for
replacing the equipment, customer's losses in production or losses in profits. The warranty will
not compensate other direct or indirect costs.
3.6 The warranty will not compensate hydraulic hoses, hose connections, nipples or materials
like e.g. hydraulic oil.
3.7 If the fault must be repaired at the customer, the customer is responsible for the all the
expenses which are not covered by warranty e.g. such as traveling costs, daily allowances,
waiting time and overtime compensation according to the standards of AM.
4) Processing the claims;
Warranty compensation requires that the customer notifies AM without delay of the defects,
which occur during the warranty period. When returning a part, which must happen without any
delay, it must always be accompanied with a written report showing from which equipment the
part is from, type of the equipment, serial number, vehicle to which it was installed, working
hours and description of the defect The returned parts must not include any irrelevant
installation accessories. Freight costs of the returned parts are paid by the customer.
If the defect in question is covered by the warranty AM will act according the following, AM will
either: a) replace the component with a new one or with an interchangeable component
b) repair or get the defected component repaired
c) reimburse the price of the component
The warranty of the replaced or repaired parts ends simultaneously with the warranty of the
equipment in question. The part/equipment, which is replaced under warranty, is owned by the
Seller until the defected part/equipment is verified in AM's warranty procedure.

4
GUARANTEE POLICY OF ARCTIC MACHINE OY
According to guarantee policy of Arctic Machine Oy, for the defaulted part can only be admitted
a guarantee after the part has been checked either by the manufacturer or by the
subcontractor.
Along with the new part, we will send an invoice with a due date of 30 days net. The old part
has to be returned to Arctic Machine Oy within 14 days from the invoice date, so that the
guarantee can be admitted for the part. If the part is not returned within the time frame, the
client is obliged to pay the amount due in the invoice. Arctic Machine Oy has to be notified of
any possible delays.
If the part is admitted under guarantee, a credit invoice will be send to the customer. If the
customer has already paid the invoice before the guarantee has been admitted, a credit invoice
will be send and the money will be returned to the customer's bank account if there is no other
invoice to which a credit can be directed. If the matter concerns a purchased part, Arctic
Machine Oy will immediately send it to the manufacturer on a case by case basis for guarantee
procedures. The customer will immediately be informed about this, so that he doesn't have to
pay the invoice before the guarantee decision of the importer. Concerning the purchased parts,
Arctic Machine Oy will follow the guarantee policy of the manufacturer.
NOTE! To accelerate the guarantee procedures, a dispatch or a dispatch number and a memo
containing information about the problem and in which situation it occurred should be send
along with the part.
Best Regards,
Arctic Machine Oy

5
TABLE OF CONTENTS
CERTIFICATE OF STANDARD COMPLIANCE........................................................2
WARRANTY POLICY FOR HYDRAULIC COMPONENTS AND EQUIPMENT/SPARE
PARTS DELIVERED BY ARCTIC MACHINE OY......................................................3
GUARANTEE POLICY OF ARCTIC MACHINE OY...................................................4
TABLE OF CONTENTS.............................................................................................5
CENTRE-MOUNTED SCRAPER AM TEHO 5 TECHNICAL DATA ..........................6
GENERAL.................................................................................................................. 7
PLOUGHING .............................................................................................................8
CENTRE-MOUNTED SCRAPER AM TEHO 5 INSTALLATION................................ 8
CONTROL OF THE CENTRE-MOUNTED SCRAPER............................................11
LEVELLING OF SOFT MATERIAL..........................................................................11
ACTIONS BEFORE OPERATION........................................................................... 12
MAINTENANCE OF THE CENTRE-MOUNTED SCRAPER ................................... 13
CENTRE-MOUNTED SCRAPER AM TEHO 5 LUBRICATION POINTS.................14
STORAGE OF THE CENTRE-MOUNTED SCRAPER............................................ 16
HYDRAULIC HOSES...............................................................................................17
HYDRAULIC OIL ..................................................................................................... 18
HYDRAULIC SCHEME CENTRE-MOUNTED SCRAPER AM TEHO 5 .................. 19
HYDRAULIC SCHEME CENTRE-MOUNTED SCRAPER AM TEHO 5 .................. 20
ELECTRIC SCHEME CENTRE-MOUNTED SCRAPER AM TEHO 5 .....................21
ELECTRIC SCHEME/WIRING ................................................................................23
OPERATING SWITCHES CENTRE-MOUNTED SCRAPER AM TEHO 5..............25
ADJUSTING THE HYDRAULICS ............................................................................26
AM-1 HYDRAULIC AGGREGATE TECHNICAL DATA...........................................28
BLADE OPTIONS....................................................................................................29
BLADE ATTACHMENT FITTINGS.......................................................................... 31
CENTRE-MOUNTED SCRAPER AM TEHO 5 SPARE PARTS..............................32
AM TEHO AM-1 HYDRAULIC AGGREGATE FOR A TRUCK (01519010101).......33
AM TEHO 5 CONFIGURATION 9031819 (Tilt cylinder with spring)........................ 34
AM TEHO 5 CONFIGURATION 9036651 (Tilt cylinder with hydraulic accumulator)38
AM TEHO 5 LIFTING CYLINDER 9032784.............................................................42
AM TEHO 5 SWIVEL CYLINDER 9032785.............................................................43
AM TEHO 5 TILT CYLINDER 9042786 (With spring).............................................. 44
AM TEHO 5 TILT CYLINDER 9035269 (With hydraulic accumulator).....................45
AM TEHO 5 EXTENSION WING CYLINDER, RIGHT 9032788..............................46
AM TEHO 5 EXTENSION WING CYLINDER, LEFT 9032792................................ 47
AM TEHO 5 HYDRAULICS (Tilt cylinder with spring).............................................. 48
AM TEHO 5 HYDRAULICS (Tilt cylinder with hydraulic accumulator)..................... 50
OPERATING INSTRUCTIONS FOR HYDRAULIC ACCUMULATOR.....................52
AM TEHO 5 DIRECTIONAL VALVE ASSEMBLY SPECIFICATION 36699............53
DIRECTIONS FOR USING THE STANDARD PRESSURE REGULATOR............. 55

6
CENTRE-MOUNTED SCRAPER AM TEHO 5 TECHNICAL DATA
Minimum working width / 25º
2500 mm
Maximum working width / 25º 32
50 mm
Driving angle to the right max 25º
Driving angle to the left max 25º
Blade tilt adjustment 13º - 13º
Cutting angle adjustment 85º - 150º
Right extension blade, working width 500 mm
Left extension blade, working width 300 mm
Weight of the centre-mounted scraper 506 kg
Weight of the attachment parts 134 kg
Overload protection safety valve and spring support
HYDRAULICS
Lift of the centre-mounted scraper double-acting cylinder, 2 pc
Swivelling of the centre-mounted scraper double-acting cylinder, 1 pc
Tilt of the centre-mounted scraper double-acting cylinder, 1 pc
Extension wing right double-acting cylinder, 1 pc
Extension wing left double-acting cylinder, 1 pc
Oil requirement 20 l/min
Pressure 150 - 210 bar

7
GENERAL
AM TEHO 5, swivelling centre-mounted scraper for trucks is completely
hydraulically operated.
The functions of the centre-mounted scraper are controlled by
operating switches in the driver’s cab.
AM TEHO 5 is suitable for use together with AM TEHO SHJ 2 side-
mounted plough and AM TEHO snow ploughs.
Use of the centre-mounted scraper together with other equipment
shortens road maintenance time and improves the quality of the road
maintenance.
The centre-mounted scraper can be used both in summer and winter.
In the summer:
• Shaping the surface of the road and building sites.
• Spreading gravel and other materials
• Roughing gravel roads
• Patching oil gravel
• Repairing ground frost and other road damage
In the winter:
• Removing snow, slush and packed snow and ice off gravel and
paved surfaces
AM TEHO 5 centre-mounted scraper should only be used when driving
forwards. When reversing, the centre-mounted scraper MUST NOT BE
USED UNDER ANY CIRCUMSTANCES. When reversing, the blade
MUST ALWAYS BE RAISED TO THE TRANSPORT POSITION.
NO EXTRA EQUIPMENT MUST BE CONNECTED TO THE
HYDRAULICALLY MOVING PARTS!
MUST NOT BE USED AS A JACK!

8
PLOUGHING
The recommended driving speeds when ploughing are
• In summer 20 - 40 km/hour
• In winter 30 - 60 km/hour, depending on the composition of the snow
GENERAL TRAFFIC RULES MUST ALWAYS BE FOLLOWED WHEN
PLOUGHING!
NOTE! During ploughing always take notice of the surroundings and
other traffic; both oncoming and that approaching from behind.
Remember to watch out for pedestrians and cyclists and not to cause
them any danger when ploughing.
Be especially cautious when ploughing intersections. Avoid
unnecessary reversing. Plough busy intersections and roads, if
possible, during non-peak traffic periods.
When ploughing the WARNING INDICATOR must always be on!
IT IS STRICTLY PROHIBITED TO GO UNDERNEATH THE CENTRE-
MOUNTED SCRAPER UNDER ANY CIRCUMSTANCES!
Remember to check that there is no one close to the centre-mounted
scraper before lowering it to the ground!
CENTRE-MOUNTED SCRAPER AM TEHO 5 INSTALLATION
In the following instructions such terms are used which, to avoid
misunderstandings, need to be explained:
Adapter plate = vertical plates by which the centre-
mounted scraper is fastened to the truck.
Transfer angle = the angle between the line parallel with
the truck axle and the centre-mounted scraper. Reads
from that side, where the centre-mounted scraper
transfers the road surface material.
Rotary table = A horizontal plate, where the adapter
plates attach from above and centre-mounted scraper’s
blade from below. A swing cylinder turns the rotary table
and by turning the rotary table adjusts the transfer angle.
Only a trained mechanic is allowed to carry out the centre-
mounted scraper’s installation!
Pay attention to the following facts during the installation:
- The adapter plates of the centre-mounted scraper are
attached to the vehicle’s frame with flanged body pins
M14x1x41 or M14x1x47 (solidity class 8.8). Also

9
comparable longer hex screws can be used as
needed. To the both sides the adapter plate is
attached with 8 pins (see picture). When drilling
adapter plates’ mounting holes to the truck’s frame
take notice of the vehicle manufacturer’s special
instructions of the allowed hole location on the
vehicle’s frame and also of actions, which may affect
to the duration of vehicle’s frame.
- Before installation, make sure that there is enough
space for the centre-mounted scraper (path of CMS’s
every moving part must be noticed), its fixing device
and hydraulics on the vehicles frame. In case other
road maintenance equipment are used together with
the centre-mounted scraper, the equipments’ and their
components’ paths must not overlap. For example
when using a side-mounted plough, a centre-mounted
scraper is installed; there should be at least 500 mm
between the rear wheel and the centre-mounted
scraper (in transport position). Without other
equipment, there should always be at least 150 mm
between the rear wheel and the centre-mounted
scraper.
- The gab between centre-mounted scraper’s adapter
plates’ upper edges and ground surface should
always, regardless of the vehicle’s frame height, be
1080 mm - with boggie down. The adapter plates
should be installed lengthwise to the same level or so,
that the right plate is about 50 mm further back (check
according to the truck in question). This way the
transfer angles are equal (25
o
) when the rotary table is
in its extreme positions.
Centre-mounted scraper AM TEHO 5 installation stages:
1. With the help of space requirement picture (see the
next picture) measure and mark the space, which the
centre-mounted scraper needs on the vehicle’s frame.
The plan all the possible required and permitted
modifications according to the constructor’s
instructions. You may have to change places of
components installed to the frame in the factory and
that’s why you have to know the allowed
modifications. For example when installing AM TEHO
5, the fuel tank transfer to the left side of the frame.
Apposed to that, the directional control valve, which is
needed for steering the centre-mounted scraper, is
welded to the back of the right adapter plate (see
picture, no. 6).
2. Transfer the centre-mounted scraper with its rotary
tables, excluding adapter plates, beneath the truck
with the help of a movable jack. Mark the place of the
adapter plates and table’s lugs. At this stage pay
attention to the centre-mounted scraper’s various
parts’ latitudes.

10
3. Transfer the centre-mounted scraper from below the
truck for welding the lugs to the table. Always weld the
lugs, equipped with rectangular hole for the slide
bearing, to the left side of the rotary table. The welding
job must be done according to the welding instruction
(see picture) and only a welding-skilled person is
allowed to do that.
4. Fasten the adapter plates to their marked places.
5. The centre-mounted scraper is transferred underneath
the truck and fastened to the adapter plates.
6. The hydraulic hoses are conducted from the valve to
the actuating devices. Notice the paths and hydraulic
hoses’ general installation instructions (see instruction
book).

11
CONTROL OF THE CENTRE-MOUNTED SCRAPER
There is a switch console in the driver’s cab where all the switches needed to
control the centre-mounted scraper are situated.
• Switch the main power on.
• Adjust the transfer angle suitable for the work with the turning switch.
• Tilt the blade down with the tilting switch.
• Extend the extension blades if required *)
• Push the blade down with the lifting switch.
*) It is also possible to lock the extension blade in its inner position. When
the blade is in the transportation position and the extension blade in the inner
position, turn the extension blade locking device on. While the extension
blade is in, also narrow pedestrian and bicycle ways can be driven.
LEVELLING OF SOFT MATERIAL
• Adjust the transfer angle suitable for the work with the turning switch.
• Extend the extension blades if required.
• By pressing the lifting switch down, adjust the tilt suitable to the road surface.
• Tilt the blade down to the ground with the tilting switch and adjust the tilt if
it is necessary to take more material off the surface of the road in places.
It is possible to freely alter the position of the blade while driving. When
finishing the work, raise the lifts up and tilt the blade to its upper position.
Turn the transfer angle to its extreme right position. Finally switch the power
off at the main power switch on the switch console.
1. Space requirement of the adapter plate and lift cylinder (rectangle200x630)
2. Space requirement of the
tilt cylinder
Ground clearance min. 80
3. Space requirement of the
swing cylinder
Ground clear
ance min. 65
4. Space requirement of the main
blade and extension blades
Ground clearance min. 65
5. Space requirement of the rotary
table (with its parts)
Ground clearance min. 55
6. Placing the CMS’s directional control
valve

12
ACTIONS BEFORE OPERATION
PERFORM DAILY
• Choose suitable blades for the purpose
Flat blades: to remove snow and slush
Ice blades or pin blades: to remove packed snow and ice
Rubber blades: salting
• Check the condition of the blades. The blades must be turned or
changed when the gap between the cutting edge and the free hole
has worn to 25 mm.
• Always adjust the cutting angle to suit the work. Lower the blade,
drive a couple of meters and check the quality of the work. If
necessary, readjust.
• Check mortise joints and hydraulic hoses and fittings. Check
cylinders for any possible leaks.
• Check the working light of the centre-mounted scraper, vehicle lights,
warning indicator and reflectors. Make sure that they are clean and
intact.
• Keep spare pins with you.
• Clean the centre-mounted scraper daily of snow and slush. Remove
possible burrs from the cutting edge of the blade.

13
MAINTENANCE OF THE CENTRE-MOUNTED SCRAPER
Maintenance of the centre-mounted scraper consists mainly of turning
or changing blades and lubrication at regular intervals.
Turning or changing blades must be done early enough so that the
main blade will not be worn, at the latest when the gap between the
cutting edge and the free hole has worn to 25 mm.
Place supporting beams under the blade during changing the
blades to avoid damage if the centre-mounted scraper drops when
changing.
Clean and grease the centre-mounted scraper carefully before storage.
Pull the piston rods in before storage.
CENTRAL LUBRICATION SYSTEM:
(Optional extra)
It is possible to connect the centre-mounted scraper to the central
lubrication system of the vehicle. Thus lubrication of the centre-
mounted scraper occurs automatically.
SAFETY MARKINGS
READ THE INSTRUCTIONS! DANGEROUS ZONE!
KEEP SAFE DISTANCE!
ACCIDENT RISK!

14
CENTRE-MOUNTED SCRAPER AM TEHO 5 LUBRICATION POINTS

15
CENTRE-MOUNTED SCRAPER AM TEHO 5 LUBRICATION POINTS
Pos
Lubrication point Tilt cylinder
with spring
Pc
Tilt cylinder
with hydraulic
accumulator
Pc
1 Centre shaft of the rotary table 1 1
2 Shaft tube of the lifting fork 4 4
3 Fixing tube of the adapter plate 3 5
4 Fixing tube of the mother blade 5 10
5 Lift cylinder 2 2
6 Swivel cylinder 2 2
7 Tilt cylinder 1 2
8 Extension wing cylinder, right 2 2
9 Left extension wing bearing tube 1 2
10 Lifting fork lug 4 4
11 Extension wing slide bar, right
(coating grease) 1 1
12 Extension wing cylinder, left 2 2
Grease nipples are marked with a red circle on the equipment.
Lubrication must be carried out once a week during the period of use.
Lubricate and service thoroughly both in the spring and the autumn.
A suitable lubricant is for example vaseline.
NOTE! The shaft tubes of the lifting fork (pos 2) must be greased very
carefully. For greasing we recommend automatic grease (=thin grease)!

16
STORAGE OF THE CENTRE-MOUNTED SCRAPER
Perform thorough wash and maintenance. Leave piston rods inside
cylinders.
PAINTING
Remove rust and loose paint from the centre-mounted scraper. Paint
the cleaned surfaces with paints compatible with the original paints of
the scraper.
DRIED PAINT IS NOT PROBLEM-WASTE.
ORIGINAL PAINTING:
Priming paint:
TEKNOZING 90SE, zinc-priming paint, grey
Paint all the other parts except the front surface of the wing.
Finishing paint:
Frame and the back of the blade:
INERTA 50 TM-102 epoxy paint, black, mat hardener.
Front of the wing:
INERTA 165 TM-291 epoxy coating, yellow.
Warning striping:
Red: TM 292
Yellow: TM 291
Minimum film thickness 100 µm. Front of the blade 150 µm.
WELDING OF PAINTED METAL
Welding will always create air pollution, e.g. carbon monoxide that is
hazardous to health.
When welding a painted surface organic disintegration products will be
formed from the paint adhesives and non-organic compounds from the
pigments.
It is very important to arrange sufficient ventilation on the welding site.
When welding a zinc coating, zinc fumes will form which might cause
zinc fever.
Symptoms of zinc fever:
High body temperature (even over 40 Cº), tiredness, pain in joints,
nausea and headache. Symptoms generally appear a couple of hours
after exposure. Zinc fever generally passes quickly and it does not
cause permanent injury. The fever is evidence of insufficient ventilation.
Before welding a material with paint film thickness of more than 100 µm,
remove the paint from an area of width 10-15 cm.

17
HYDRAULIC HOSES
Check daily the condition of the hydraulic hoses. Immediately replace a
broken hose with a new one.
STORAGE OF HOSES:
• Ensure that direct sunlight does not fall directly on hoses and that the
artificial light is not too strong.
• The storage must be draught- and pressure free.
• Avoid making the hose in a hot place but if it is unavoidable, use a thermal
shield.
• Ensure that fluids used are compatible with the hose material.
• Prevent contact between the hose and wood or cloth impregnated with
creosote.
• Close open ends of hoses with shield plugs.
• Ensure that the hose is not twisted when installing. (There is usually a
lengthwise line as an indicator.)
• Follow the hose specifications recommended by the manufacturer.
DO NOT:
• stroke the hose with bare hands when testing the pressure.
• exceed the working temperature range recommended by the
manufacturer.
• exceed the working pressure range recommended by the
manufacturer.
• bend the hose over its minimum bending radius.
• use the hose as a pulling device.
• use major force to tighten the fittings.
• paint the hoses without permission from the manufacturer.
MINIMUM BENDING RADIUS:
Size Bending radius/ mm
Hose 1/4” R=102
3/8” R=127
1/2” R=178
5/8” R=203
3/4” R=241
1” R=305
1 1/4” R=419
1 1/2” R=508
2” R=635
Hydraulic hoses: SAE 100 R2T / DIN 20022-2SN
Working temperature: -40...+100 Cº

18
HYDRAULIC OIL
Recommended hydraulic oil: NESTE Hydrauli 32 Super - special hydraulic oil or
corresponding.
Oil requirements:
Operating temperature 30º - 60ºC
Operating viscosity 16 - 36cSt
Viscosity index 200 ISO 2909
Cleanliness class 18/15 ISO/DIS 4406 or
Cleanliness class 9 NAS 1638
Water content H
2
O<40ppm
Return or separate filling filter must be used when filling the oil tank.
Hydraulic oil is a mixture of highly processed mineral oils and additives.
BE ESPECIALLY CAREFUL AND CAUTIOUS WHEN HANDLING HYDRAULIC
OIL. AVOID CONTACT WITH THE SKIN AND PREVENT OIL FROM
SPILLING ON THE GROUNG!
Lon-term and continual contact with skin may cause inflammation of the skin.
Great emissions can cause contamination of the groundwater.
Used oils may include hazardous ingredients accumulated during the use of the
product, which may cause hazard to health and/or to the environment during
disposal.
DISPOSE OF OIL WASTE ACCORDING TO THE WASTE DISPOSAL LAWS
AND REGULATIONS.
DIRECTIONS IN CASE OF FIRE:
Suitable extinguishing substances: FOAM AND POWDER
For small fires CO
2
.
WATER SHOULD ON NO ACCOUNT BE USED FOR EXTINGUISHING A
FIRE!
A respirator mask must always be used when extinguishing a fire.
INFORM THE LOCAL AUTHORITIES ABOUT ANY OCCURRED DAMAGE!

19
HYDRAULIC SCHEME CENTRE-MOUNTED SCRAPER AM TEHO 5
(Tilt cylinder with hydraulic accumulator)
A = PISTON
B = PISTON ROD
Right wing Left wingSwivelTilt
- Simultaneous functions
by combining electricity
Right liftLeft lift
TANK
Pressure

20
HYDRAULIC SCHEME CENTRE-MOUNTED SCRAPER AM TEHO 5
(Tilt cylinder with spring)
Right wingLeft wingSwivelTilt
-
Simultaneous functions
by combining electricity
Right liftLeft lift
TANK
Pressure