MTZ 1220.1, Руководство оператора

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MTZ 1220.1/1220.3 Section D. Construction and Operation
D40
stalled on the panel (1) face. The latter is
located over the tractor right-hand side
control panel.
Note: A braking relay is provided in the
FDA drive control electric circuit. It en-
sures the automatic engagement of the
drive when stepping on the interlocked
service-brake pedals.
How To Use the Front Driving Axle
Control Key (11)
1. When performing jobs with great extent
of slippage of front wheels, press the
upper part of the key (11) having acti-
vated the automatic FDA drive control
mode. When it will be done, the auto-
matic control is exercised depending
on tractor slippage, which is sensed by
sensor (9) of automatic control. When
rear wheels are slipping, the sensor (9)
closes contacts and energizes the
electromagnet of the control electro-
hydraulic distributor (10). When slip-
ping intensity drops, the sensor (9)
beaks contacts to de-energizing the
electromagnet and disengage the FDA
drive, respectively.
2. If the job requires operation with for-
ward and reverse moves, with the FDA
engaged all the way through, depress
the lower part of the key (11). To dis-
engage the FDA drive, press the key
(11) to its middle position.
ATTENTION!
1. When reversing, NEVER engage the automatic FDA drive control mode; use the
forced drive only. Use the forced drive mode of the FDA for short-run jobs only: to
clear an obstacle or when running the tractor in reverse.
2. Be sure to disengage the FDA when on surfaced roads to avoid accelerated wear of
the front wheel tyres, drive parts and FDA.
Hydraulic Lift Linkage (HLL)
The HLL is intended for controlling and
operating the tractor aggregated with
mounted, semi-mounted and pull-type ag-
ricultural machines and implements at-
tached to the rear hitch linkage (RHL).
The hydraulic system is composed of con-
trols, an oil tank with filter, oil, pump, two-
or three-section flow-through distributor,
hydraulic power lift and power lift drive.
The operating controls of the hydraulic
system (7), (8) (Fig. E-29) are located in
the tractor cab, with the exception of the
pump engagement handle (the design is
left unchanged) and additional position
control handle (8
а ) (Fig. E-29) located on
the rear of the tractor on the hydraulic
power lift.
Control of External Loads – these are
three handles of the flow-through distribu-
tor located on the right-hand side of the
steering wheel (the design is left un-
changed).
Positions of the handle (from bottom to
top) are: “Lift”, “Neutral”, “Drop” and
“Floating”.