PRONAR PRONAR 5110, Руководство оператора

Страница: 90 / 122

SECTION 6: MAINTENANCE
6-8
Bleeding fuel system is performed as follows:
Figure 6-9
In PERKINS engines, the fuel system is air bled automatically.
In IVECO engines, use the hand fuel pump for this.
In order to do this loosen bolt joint connecting fuel conduit with fine fuel
filter 1, and then using lever of 2 hand fuel pump, pump fuel until from
under loosened bolt fuel begins to flow without air bubbles. Then tighten
bolt joint connection.
OPERATION No. 7.
Fan and alternator drive belt tension.
IVECO engine
Figure 6-10
In IVECO engines the fan belt 1 is tensioned with tensioner 2.
Inspect belt 1 over entire length, checking for wear, cracks, cuts
and general wear. If in doubt, replace with new belt. Ensure that
belt is properly laid around belt wheel and check correct operation
of tensioner 2.
PERKINS engine
The tension of fan drive vee belt is measured by yielding midway
between belt tensioning wheel and engine crankshaft belt wheel.
When a force of F=100 N is applied, yielding should amount to X=10
mm. Tension of belt is adjusted in by belt tensioning wheel setting
after previously loosening of bolts 1 and 2. After setting tensioning
wheel first tighten bolt 1, and then bolt 2.
Alternator and compressor belt tension is measured by torque
spanner between alternator belt wheel, and fan belt wheel. Belt
should yield after application of force 535 N.
Figure 6-11
Belt tension is adjusted by
alternator setting, after previously
loosening bolts 2 and 3. after
performing adjustment bolts 2 and 3
should be tightened with torque of 22
Nm.
OPERATION No. 8.
Engine, steering system and brake system and remaining systems and tractor
assemblies.
The engine should run evenly in the whole revolution speed range. Control elements, steering system,
brakes, lighting and signalling systems, screen wipers should be checked and be in good technical condition.
This should be checked before working with tractor.