MTZ 1220.3 User manual

MTZ
1220.1 / 1220.3
1220.1 – 0000010 OM
OPERATOR'S MANUAL
2010

In view of constant upgrading of produced goods, the construction of some units and parts
of tractor may undergo changes which are not reflected in present edition.
Some technical data and illustrations given in this book may differ from those on your trac-
tor. Dimensions and weights are approximate (advisory). For detailed information please
consult your MTZ Dealer.
_______________________________________________________________________
RUE “Minsk Tractor Works”, 2010
All rights reserved. No part of this book may be reproduced in any form without written
permission of RUE “MTW”.

MTZ-1220.1/1220.3 Table of contents
TABLE OF CONTENTS
INTRODUCTION…………………………………………………………………………………...
1
SAFETY REQUIREMENTS……………………………………………………….. B1
GENERAL INFORMATION………………………………………………………………….. C1
OPERATING CONTROLS AND INSTRUMENTS ……... D1
DESCRIPTION AND OPERATION OF TRACTOR CONSTITUENTS……………………. E1
TRACTOR PREPARING FOR OPERATION ……………………………………………... F1
OPERATING INSTRUCTION………………………………………………………………. G1
ADJUSTMENTS ……………………………………………………………………………… H1
COUPLING OF IMPLEMENTS ………………………………………………………………. I1
POSSIBLE FAILURES AND GUIDELINES FOR TROUBLESHOOTING J1
SCHEDULED TECHNICAL MAINTENANCE ……………………………………… K1
TRACTOR TRANSPORTATION AND TOWING ……………………………. L1
TRACTOR STORAGE ……………………………………………………………………. M1
TRACTOR DISPOSAL………………………………………………………………….. N1
ANNEXES
Advisable fuels, oils, lubrication materials for tractors MTZ- -
1220.1/1220.3»………………………………………………………. An1
Electrical circuit diagram of the DL, FDA and PTO control system of “MTZ
1220.1/1220.3” tractors (with GB 16x8) An6
Electrical circuit diagram of the DL, FDA, PTO and gearbox reduction unit control sys-
tem of “MTZ-1220.1/1220.3” tractors (with GB 24 x12) An7
Electrical circuit diagram of MTZ - 626/826/926/1220.1/1220.3 tractors An9

MTZ 1220.1/1220.3 Section А. Introduction
А1
Section . INTRODUCTION
The present operator’s manual is designed for studying the structure, operation
rules and maintenance of tractors MTZ-1220.1/1220.3.
Read this manual carefully and fulfill requirements set forth in this manual.
Failure to follow this instruction can lead to operator's injury or a breakdown of
a tractor.
Operation of a tractor, its maintenance and repair shall be carried out only by
employees, familiar with all of its parameters and characteristics and informed about
necessary safety requirements to prevent casualties.
In connection with constant development of the tractor some changes, which
are not depicted in the present manual, can be introduced in the structure of certain
units and parts.
Long-term and reliable tractor performance is secured in the case of proper
operation and timely maintenance.
Any arbitrary changes made by a consumer release the manufacturer
from responsibility for possible further injuries to the operator and tractor
breakdown.
Tractors “MTZ -1220.1/1220.3” are universal wheeled tractors of the 2
nd
draw-
bar category with 4x4 wheel arrangement and designed for multiple agricultural op-
erations with mounted, semimounted, trailed implements, and for loading and unload-
ing and hauling operations.
Tractors “MTZ -1220.1” is a basic model with diesel engine D-245.2S2 with rated
power of 90 kW.
Tractors “MTZ -1220.3” is a modification with diesel engine D -245.2S2 with rated
power of 90 kW, muffler on the right side of cab column.
TO OPERATORS ATTENTION!
The tractor must be run-in for 30 hours. It is recommended to load a diesel
engine only up to 80% of the rated power until the first MS-1 (in 125 hours).
2. Your tractor is equipped with range-type gearbox. In addition the ranges are
shifted with toothed couplings, and gears within each range are shifted by virtue of
synchronizers.
To throw into the range proceed as follows:
––Depress the clutch pedal and await complete tractor stop;
—Throw into the required range smoothly, without jerks, using the range engaging
lever;
—Smoothly release the clutch pedal.
To change geasr proceed as follows:
—Depress the clutch pedal;
—Shift the gearshift lever smoothly, without sharp jerks, and hold it in depressed
position until the gear is completely actuated;
— Smoothly release the clutch pedal.
You can change the gears in motion within the range only during the hauling opera-
tions on the hard-surface and dirt roads. Never attempt to change the gears in motion

MTZ 1220.1/1220.3 Section А. Introduction
А2
when a tractor unit is used in the cross-country conditions (arable fields, peat beds,
sandy soil etc.) because sudden stop of the tractor-machine unit can occur. Cross
the mentioned sections with previously selected gear.
Failure to comply with the stated operation rules will cause quick wearing out of gear
splines and tooth-type couplings as well as synchronizers impairment
Attention! If you hear skirr when shifting ranges and gears with the clutch pedal
being depressed, immediately turn to a repair shop for malfunction repair.
3. Observe the rules of PTO switch. When switching PTO move control lever smooth-
ly with 2…4 sec. hang-up in the centre of motion from neutral position to PTO switch
in order to prevent shaft breaking, reducer gears breaking and tail breaking of PTO.
4. When adjusting operating and parking brakes make sure that the ground is hori-
zontal, the engine is not running, rear wheels from front and back are supported by
wedges to exclude accidental movement of the tractor.
Adopted abbreviations and symbolic notations.
AB
—accumulator battery;
RADL
—rear axle differential lock;
PFE
—paper filter element;
TDC
—engine piston top dead center;
PTO —power take-off shaft;
PIS —power intake shaft;
HLL
—hydraulic lift linkage;
HSU —hydrostatic steering unit;
SMS —shift-time maintenance service;
SPTA
—spare parts, tools and accessories;
RHL
IVR — rear hitch linkage; —integral voltage regulator
SFE
—safety filter element of engine air cleaner;
GB
—gearbox;
TMU
—tractor-machine unit;
CC
—clutch coupling;
MS
—maintenance service;
THM
—towing hitch mechanism;
MFE
—main filter element of engine air cleaner;
FDA
—front driving axle;
HACS
—hydraulics automated control system
SM —season maintenance;
VFL — volatile flammable liquid
CAC
—engine charge air cooler;
TC — engine turbocharger.

MTZ 1220.1/1220.3 Section А. Introduction
А3
International Symbols
Manufacturer uses standard international symbols regarding instruments and operat-
ing controls.
Symbols with their meaning are given below.
—see operators manual —control operating direction
—brake —fast
—parking brake —slow
—horn —forward
—alarm signaling —reverse
—fuel level in the tank —battery charging condition
—coolant —cab dome light
—starting preheater plug
—marker lights
—engine speed —turning signals
—engine oil pressure —headlights main beam
—engine coolant temperature
—headlights lower beam
—off/stop —working headlights
—on/start —differential lock
—continuous change —PTO engaged
—lever — down
—FDA engaged
—lever — up —fan

MTZ 1220.1/1220.3 Section А. Introduction
А4
—control valve spool “lift” posi-
tion —windshield washer
—control valve spool “drop”
position —front windscreen wiper
—controlvalve spool“float”
position —rear windscreen wiper
—oil pressure in gearbox —trailer turning signal
—air pressure in pneumatic
system —oil pressure in HPS
—air filter impurity —

MTZ 1220.1/1220.3 Section B. Safety requirements
B1
Section B. Safety Requirements
SAFETY REQUIREMENTS
Strict observance of safety precautions
and exact complying with the rules of
tractor control and its maintenance se-
cure absolute safety of its operation.
General instructions
1. Study this operators manual atten-
tively before operating the tractor.
Poor knowledge of the tractor oper-
ation and service may lead to acci-
dents.
2. Only specially trained and skilled
operators, who have passed acci-
dent-prevention and fire safety
briefings, are allowed to operate the
tractor.
3. If tractor is equipped with safety
belt use it during the operation. If
tractor is not equipped with safety
belt, contact the dealer.
4. Do not take a passenger into the
cab, if additional seat and hand
rails are not installed. There is no
any other safe space for a passen-
ger in the cab!
5. Keep all warning plates clean.
6. Replace any damaged or missing
warning plate.
7. Carefully inspect the tractor, trailed
machine, mounted implement and
hitch before commencement of op-
erations. Before starting operations
make sure that they are in good
order. Trailed agricultural machines
and transport trailers should have
rigid hitches, preventing their sway-
ing and rear-end collision with the
tractor during a hauling.
Safety measures during tractor op-
eration
Warning! Do not ever start the en-
gine while being outside the opera-
tor’s workplace. Always stay in the
cab in the operators seat when start-
ing the engine or operating the con-
trols.
7. Before starting the engine, make
sure that the parking brake is ap-
plied, the PTO control lever is in
«Disengaged» position, the gear-
shift and range selector levers are
in «Neutral» position. Make sure
the gearbox pump drive shifter is in
«Engine-Driven» position.
8. Always stay in the operators seat
when starting the engine or operat-
ing the controls.
9. Before starting motion, warn the
people around and those working
on the trailed machines with the
horn.
10. Do not leave the tractor in motion.
11. Before leaving the cab do not fail to
disengage the PTO, stop the en-
gine, apply parking brake and re-
move the switch key.
12. Do not operate the tractor indoors
without proper ventilation. The ex-
haust gases may cause fatal out-
come!

MTZ-1221.2/1221В.2/1221.3 Safety requirements
11
13. Stop the tractor immediately if the
engine or steering system fails.
Remember, that with the engine
shut down you will have to apply
much more forces to the steering
wheel in order to control the tractor.
14. Do not work under raised agricul-
tural implements. Do not leave
mounted implement in raised posi-
tion during long-term stops.
15. If the tractor front part rises off the
ground when heavy implements are
mounted at the rear hitch linkage
mechanism, install the front ballast
weights.
16. When operating with front loader,
fill rear tires with liquid ballast and
adjust a maximum wheel turning
angle to 30°at the most.
17. Before lifting or lowering a mounted
agricultural implement, and when
turning, make sure in advance
there is no danger of contact with
anyone around or interference with
some obstacle.
18. During transportation with imple-
ments and accessories coupled,
mechanism for fixing of attached
parts in raised position must be
used (for HLL without hydraulically
operated lift).
19. Cardan shaft, transmitting rotation
from the tractor PTO to the imple-
ments of the unit, should be fitted
with appropriate guards.
20. Make sure of proper mounting of
any additional equipment or aux-
iliary device and make sure they
are designed for use with your trac-
tor.
Bear in mind that your tractor, when
improperly employed, may be dan-
gerous both for you and for the
people around. Do not use imple-
ments, which are not designed for
installation on this tractor.
21. To prevent tractor roll-over, be
careful during the driving the trac-
tor. Select a safe speed, corres-
ponding to the road conditions, es-
pecially during cross-country driv-
ing, driving over ditches, slopes and
sharp turns.
22. When working on hillsides, increase
tractor wheel tread to maximum
width.
23. Avoid making sharp turns at full
load and at high travel speed.
24. When using the tractor for hauling
operations, follow the rules:
• Increase wheel tread to 1600 mm
(64’’) at least;
• Interlock the brake pedals, check
and, if necessary, adjust the
brakes for simultaneous action;
• Check the parking brake perfor-
mance;
• Check condition of the light and
audible signaling devices;
• Cargo trailers must be fitted with
rigid hitches as well as be con-
nected with safety chain or rope;
• Never travel downhill “free wheel”
with transmission in neutral posi-
tion or clutch disengaged. When
traveling downhill use the same
gear as you would when going
uphill;
• Never use a trailer without inde-
pendent brakes, if its gross weight
exceeds the half of the tractor total
actual mass. The faster you move
and the more load you tow, the
longer safety distance must be;
• Disengage the FDA to avoid ex-
tensive wearing out of drive com-
ponents and tires;
• Do not use the RADL at speed
exceeding 10 km/h and while turn-
ing.
• Do not stop the tractor on the
slopes. If it’s necessary to stop,

MTZ-1221.2/1221В.2/1221.3 Safety requirements
12
engage the 1st gear and apply the
parking brake.
25. When you use PTO-driven equip-
ment, stop the engine and make
sure that PTO drive end has
stopped completely, before you
leave the cab and uncouple the
equipment.
26. Do not wear loose clothes when
operating the PTO or when you are
in the vicinity of the rotating equip-
ment.
27. When working with stationary ma-
chinery driven from the PTO, do not
fail to apply the parking brake and
block the rear wheels of the tractor
from the front and rear sides. Also
make sure the machine is secured
in its place.
28. Make sure the guard of the PTO
drive end is installed, and if the
PTO is not used, shift the PTO
mode control switch into mid-
position.
29. Do not carry out cleaning, adjust-
ment and maintenance of the PTO-
driven equipment when the engine
is running.
Safety measures during tractor
maintenance
30. Never refuel the tractor when the
engine is running.
31. Never smoke while refueling the
tractor.
32. Never fill the tank fully. Leave place
for fuel expansion.
33. Never add petrol or mixtures to the
diesel fuel. Such combinations may
enhance the fire or explosion ha-
zard.
34. Use properly summer and winter
fuel grades. Fill in a fuel tank at the
end of each day to minimize night
water condensation.
35. Perform all operations, relating to
engine and tractor cleaning, prepa-
ration for work, maintenance, etc.,
when the engine is shut down and
brakes are applied.
36. The cooling system operates under
pressure, which is maintained by
the valve installed in the filler cap. It
is dangerous to remove the cap
when the engine is hot. To avoid
face and hands burns be careful
while opening radiator filler cap
when the engine is hot. Put close
cloth on the cap and take on a
glove in advance.
37. To avoid skin burns, be careful
when draining cooling liquid or wa-
ter from the cooling system, hot oil
from the diesel, hydraulic system
and transmission.
38. Be careful when servicing storage
batteries, because electrolyte
causes burns if it comes into con-
tact with the skin.
39. To avoid danger of explosion keep
any type of open flame away from
engine fuel system and storage bat-
teries.
40. Keep the tractor, its equipment, es-
pecially brakes and steering con-
trol, in operable state in order to
ensure your own safety and safety
of people around.
41. Do not make any alternations in the
tractor or its separate components
without consulting your dealer and
or manufacturing works. Otherwise
the tractor will be deprived of after-
sales service.
42. To avoid the fuel splash-out while
refueling the tractor by mechanized
method, remove the screen filter
from the fuel tank filler neck.
Screen filter is designed only for
manual refueling of the tractor in
the field.
43. Refuel the tractor using only oils
and lubricants recommended by the
manufacturing works. It is strictly
forbidden to use other lubricants!

MTZ-1221.2/1221В.2/1221.3 Safety requirements
11
Safety requirements during
operation and maintenance of
electrical equipment
44. To avoid damaging the semicon-
ductor devices and resistors,
comply with the following precau-
tions:
• Do not disconnect the storage bat-
tery while the engine is running.
This will cause a peak voltage in
charging circuit and lead to imme-
diate damage to the diodes and
transistors;
• Do not disconnect electric wires
until the engine is stopped and
electric switches are in the “OFF”
position;
• Do not cause a short circuit by the
wrong connection of electrical
wires. A short circuit or reverse
polarity will cause damage to the
diodes and transistors;
• Do not connect a storage battery
into the electrical equipment sys-
tem until it has been checked for
correct voltage and terminals po-
larity;
• Do not check for current flow by
means of spark test as it will im-
mediately result in transistors
breakdown;
• It is prohibited to switch off the
battery disconnect switch when
the engine is running;
• It is prohibited to operate the trac-
tor without storage battery.
Hygienic requirements
• Daily fill the thermos with fresh
clean drinking water;
• First-aid kit should be completed
with bandages, iodine tincture, ammo-
nia spirit, borated petrolatum, sodium
carbonate, menthol valerate and anal-
gin;
• Use cab natural ventilation or cab
air heating and cooling unit according to
operation conditions.
• If the time of continuous tractor op-
eration during a work shift exceeds 2,5
hours it’s necessary to use personal
noise protection equipment according
to GOST 12.4.051-87 (earplugs, anti-
phons).
Fire safety requirements
1. The tractor should be equipped with
firefighting equipment – shovel and
fire-extinguisher. It’s prohibited to
operate the tractor without fire-
extinguishing means.
2. Never refuel the tractor when the en-
gine is running.
3. Do not smoke while refueling the
tractor.
4. Never fill the tank fully. Leave place
for fuel expansion.
5. Never add petrol or mixtures to the
diesel fuel. Such combinations may
enhance the fire or explosion hazard.
6. Places of tractors parking, storage of
fuel and lubrication materials should
be plowed around with a strip having
at least 3 m width and provided with
fire-extinguishing means.
7. Refuel the tractors with fuel and lu-
brication materials by mechanized
method with the engine shut down.
Use lighting at night. It is not recom-
mended to fill in fuel tanks with the
help of buckets.
8. When performing repair operations in
the field with the application of elec-
tro-gas welding clean parts and as-
sembly units from plant remains.
9. Prevent collector and muffler pollu-
tion with the dust, fuel, straw, etc.
10. Prevent straw reeling on the rotat-
ing parts of machines aggregated
with the tractor.
11. When washing parts and assembly
units with kerosene or gasoline take

MTZ-1221.2/1221В.2/1221.3 Safety requirements
12
measures to prevent the flaming of
the washing liquid fumes.
12. Do not operate the tractor in the fire
dangerous areas when the bonnet
and other guard devices are taken
off the engine heated parts.
13. Do not use open fire for heating up
the oil in the engine pan, when fill-
ing in fuel tanks, and for burning off
the contaminant pollution of the ra-
diator core.
14. When the fire seat occurs cover it
with sand or with canvas cloth or
other close cloth. Use the carbon-
dioxide fire extinguisher. Do not ex-
tinguish burning fuel with water
15. See that there are no flammable
materials near exhaust manifold
and muffler when the engine is run-
ning.

MTZ 1220.1/1220.3 Section С. Technical data
C1
Section C. TECHNICAL DATA
Tractor MTZ - 1220.1
Tractor MTZ - 1220.3
Muffler on the right side of cab column, for the rest see “MTZ - 1220.1”
Weights and dimension:
Parameter
Value
Length
with ballast weights and linkage to a tractor in transp
ort position
,
mm
4
6
00
±
5
0
Width
over semiaxles ends
,
mm
2250
±
10
H
eight
over cab
,
mm
2890
±
50
Wheelbase
,
mm
2550
±
30
Agricultural clearance under axle tubes, mm
(not less than)
630
Road clearance
(
on tires of basic configuration
)
,
mm
,
not less than
450
Tractor
structural weight
,
kg
4850
±
100
Tractor operating we
ight
,
kg
5500
±
100
Tractor
maximum
operating
,
kg
8800
Serial numbers of tractor constitu-
ents
Tractor identification plate indicates
tractor serial number and diesel engine
serial number.

MTZ 1220.1/1220.3 Section С. Technical data
C2
Tractor serial number is duplicated on
the right sidemember.
Diesel engine serial number is also in-
dicated on the engine identification
plate located on the left side of cylind-
ers block.
Diesel engine turbocharger identifica-
tion number
Clutch coupling housing number

MTZ 1220.1/1220.3 Section С. Technical data
C3
Gearbox identification number
.
Transmission identification number
Front driving axle identification number
Cab serial number

MTZ 1220.1/1220.3 Section С. Technical data
C4
Diesel engine
Engine model
D-245.2S2
Manufacturer
ОАО Minsk Motor Plant
Type
Four-cycle, turbo-charging with after-
cooling
Number of cylinders
4
Fuel injection system
direct injection
Compression ratio (calc
u
lated)
17±1
Cylinder bore
,
mm
110
Piston stroke
,
mm
125
Displacement
,
l
4,75
Firing order
1-3-4-2
Cool
ing system
liquid
Rated speed
,
rev
/
min
2200
Maximum no
-
load speed
,
rev
/
min
2420
Minimum idle speed
,
rev
/
min
800
±
50
Rated power
,
kW
90
Peak torque
,
Nm
490
Specific fuel consumption at opera
t-
ing power, g/(kW·h) 254,0
7,12
1,5
+
−
Clearance b
etween rocker shaft
striker and intake valve stem end
when diesel engine is cold, mm
- 0,25
05,0 10,0 +
−
Clearance between rocker shaft
striker and exhaust valve stem end
when diesel engine is cold, mm
- 0,45
05,0 10,0 +
−
Fuel inje
ction lead angle
up to top
dead center (TDC), degrees 3,5±0,5

MTZ 1220.1/1220.3 Section С. Technical data
C5
Diesel engine fuel system
Fuel pump
Type: four-plunger, in-line with priming
pump:
PP4M10Pli – 3704 (of the company
MOTORPAL, Czech Republic) or
773.1111005 –07(of OAO YAZDA,
Russian Federation).
Regulator: mechanical, centrifugal, va-
riable speed, direct acting type, with au-
tomatic fuel supply increase at engine
start.
Injectors: 455.1112010-50 or
172.1112010-11.01
Air cleaner
With paper filter elements.
Turbocharger
radial inward turbine and radial-flow
compressor, assembled on one shaft.
C14 type of the company CZ (“Turbo”),
Czech Republic. Installation of foreign
producers turbochargers is possible.
CAC is of radiator type, installed in
front of water radiator. It is designed for
cooling of air charges inside the diesel
engine intake manifold.
Engine cooling system
Type: liquid, closed with positive liquid
circulation, temperature control, ther-
mostatic regulator. Normal operating
temperature from 85ºto 95º.
Engine lubrication system
Тype: Combined, with oil-to-water heat
exchanger.
Oil purification: full-flow with exchan-
geable filter (indecomposable n-type)
Min oil pressure: 0.08 MPa at 600 rpm.
Working pressure between 0.25…0.35
MPa.
Max.pressure at cold engine: up to 0.6
MPa.
Engine Starting System
24 V starting motor, rated power 4.0kW
or 4.5 kW
Starting aid:
Heating plugs, rated voltage 23V or
11V.
Generator
AC, rated voltage 14V, power 1.15 kW.
Clutch coupling
Type: Dry friction, double-disk
spring loaded clutch

MTZ 1220.1/1220.3 Section С. Technical data
C6
Gear box
Type: 16/8, mechanical, step-by-step, ranged with constant-mesh gears. Shifting of
four gears in each range of forward and reverse movement is carried out via syn-
chronizers.
The Table below is placed in the right part of the cab window,
Note – A gearbox 24/12 can be installed in your tractor optionally. In this case a Ta-
ble with corresponding series of speeds will be in the cab window.
Tractor design travel speeds with rear wheels 18.4R38
Rear axle
Main gear: a pair of bevel gears with
spiral tooth.
Final drives: apair of spur gears for
each sideboard.
Rear-axle drives: planetary type.

MTZ 1220.1/1220.3 Section С. Technical data
C7
Differential lock: Oil-actuated friction
clutch
Brakes
Service Brakes: on rear wheels: two-
disk or three-disk, dry with mechanical
servo drive. Disk diameter: 204 mm (or
eight-disk, operating in oil sump (op-
tion)
Parking brake: On rear wheels through
differential lock on final drives and rear-
axle drives. Dry-disk type with mechan-
ical hand control. Disk diameter: 180
mm (or 4-disk, operating in oil sump
(option))
Front driving axle
Type: two-point, beam-type
Main gear type: bevel gears with spiral
tooth.
Differential type: self-locking, exces-
sive friction
Final gears type: planetary
Drive gear type: built in GB single pa-
rallel-shaft reduction gear unit with hy-
draulically operated multiplate clutch;
cardan shaft.
Hydraulic distributor of FDA control:
hydraulically operated, spool-type, elec-
trically controlled
PTO drive
Type: independent, two-speed and
synchronous
Drive clutch: Planetary reduction gear
with band brakes
Drive: electrohydraulic
PTO end speed:
Independent drive
I —540 rpm; N=60 kW,
II —1000 rpm; N=90 kW.
Synchronous drive
4,18 rev/meter of travel when fitted with
tires 18,4R38.
PTO shaft end extension: SAE stan-
dard 6-spline for 540 rpm and 21-spline
for 1000 rpm.
Rotation: Clockwise
Steering
Type: hydrostatic (H.S.).
Feed pump: NSH14, gear-type, left-
handed rotation.
Volume constant — 14 m
3
/rev.
Metering pump type — gerotor type
Volume constant – 160 m
3
/rev.
Relief valve pressure— 14 Pa (140
kgf/m
2
).
Antishock valves pressure — 20 Pa
(200 kgf/m
2
).
Actuating mechanism: one hydraulic
bilateral cylinders.
Bore — 63 mm,
Cylinder stroke— 200 mm
Steering wheel range of adjustment:
•in angle of slope - from 25°to 40°
with fixation in four positions,
•in height – along steering shaft axle,
stepless 100 ±200 mm
Backlash in the steering wheel –
max. 25°, when feed pump is in opera-
tion
Hydraulic lift linkage (HLL)
Type: unit-principle with hydraulic lift
device (with two plunger cylinders) It

MTZ 1220.1/1220.3 Section С. Technical data
C8
provides 4 control modes of agricultural
implements position:
• height control mode;
• power control mode;
• position control mode;
• combined (mixed) control mode.
Outlets: 3 pairs and one drain line
(rear).
Oil feed pump
Тype: gear-type. Pump capacity — not
less than 56 l/min at 2100 rpm.
Distributive valve: hydraulic spool-
type 70-1221 or RS-213 «MITA», 3-
section with fixation of spools in “float”
position. It has the following positions:
“Up”, “Neutral”, “Down” and “Float”.
Hydraulic lift distributor:
820-4634010. hydraulic spool distribu-
tor
Cylinder: piston cylinder
(2 pcs.) — bore 90 mm,
stroke — 220 mm.
Rear lift linkage:
Type: swinging four-bar linkage of cat-
egory II
Lifting capacity of rear lift linkage on
suspension axis is not less than 4500
kg.
Electrical equipment
Voltage of on-board power system:
12V
Power system: two accumulator batte-
ries12 V each, with capacity 88 •h or
90 •h .
Lighting and light alarm system:
•front driving lights with high/low
beam;
•front and rear work lights;
•front and rear lamps;
•dash board light and rear registration
plate light;
•hazard warning lights;
•lights of “road-train” sign (optional).
Power consumers connection: multi-
pin composite plug.
Test instruments
Instrument cluster, integrated display
and control lamps blocks.
Other equipment:
Front and rear window wipers; wind-
shield washer; dome light.
Pneumatic system
Compressor
Type: single-cylinder, air-cooled
Trailer brakes control
Type: pneumatic, single-wire, locked
with tractor service brakes (option –
two-wire).
Wheels
Tyres (main modification)
Front:
M 420/70R24 or 14,9R24;
On order: 11.2R24.
Rear:
Main: 18,4R38;
On order: 16.9R38, 11.2R42.
Wheel Track:
•front wheel track 1535, 1635, 1700,
1800, 1850, mm, 1950; 2020; 2120.
•rear wheel track 1450...2200 mm.