MTZ 952 - Page 83

Operating Instructions
MTZ series 900
83
Starting at low temperatures
(+4°С and below)
Important! To avoid the damage of the
power gear, do not push or pull the
tractor to start the engine by towing.
The engines of the MTZ-
900.3/920.3/950.3/952.3 tractors are
equipped with glow plugs. When
energizing them, the plugs get red-
hot and heat the air taken into
each engine cylinder.
At steadily low temperatures, use
the winter oil grades in the engine
crankcase, gear box and hydraulic
system in accordance with the
recommendations of this Manual.
Keep storage batteries always
charged.
Use pure winter diesel fuel not
contaminated with water.
To avoid failures, drain sediments
from the coarse fuel filter and fuel
tanks every day.
Attention! If the tractor is equipped
with electric torch pre-heater, use
previously published “Operating
instructions”.
Procedure of starting the engine
at low temperatures:
• Switch off the hydraulic system
oil pump drive to reduce the re-
sistance to the crankshaft turning;
• Check the level of oil in the en-
gine pan and of cooling fluid in the
radiator;
• Apply the parking brake to keep the
tractor from motion;
• Set the change gear lever and
the range lever (2) to the neutral
position, move it to the leftmost posi-
tion and hold it in this position until
the start is completed and the step-
down reducing gear lever to the ex-
treme position;
• Set the PTO control lever (3) to the
OFF position and the “Synchronous–
Independent” switching lever – to the
“Neutral” position;
• Set the ground switch to the ON posi-
tion;
• Set fuel feed control arm (5) to the
mid position;
• Step on the clutch pedal;
• Hold the key in the “I” position for
more than 2 s. Then the starting aid
warning lamp will light up at the pilot
lamp block, signalling about the
glow plugs energizing. Hold the key
in this position. As soon as the
warning lamp starts blinking at the
frequency of 1 Hz, the glow plugs
and the engine are ready for start-
ing;
• Turn the starter key to the “II” posi-
tion and start the engine under nor-
mal conditions as stated above. Af-
ter starting the engine, the pilot
lamp will become dim and audible
warning will be silenced.
Note: The system ensures the oper-
ation of the glow plug within 3
minutes after starting the engine
(then the pilot lamp is off).
Attention! If the glow plug pilot
lamp lights up in the blinking mode
at the frequency of 2 Hz after start-
ing the engine and operation within
3 minutes, this indicates that the
glow plugs are not switched off af-
ter finalization of the full cycle by
the system. Shut down the engine,
turn the ground switch off and
eliminate the failure. A probable
reason can consist in sticking the
electromagnetic relay contacts.
• Release the clutch pedal. Warm up
the engine.