MTZ 1220.3 - Page 5

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.