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D
E
4
AILY
URO
OIL VACUUM PUMP ASSEMBLY (GPOD)
Figure 248
DIAGRAM OF GPOD ASSEMBLY ON ENGINE
1. Vacuum pump — 2. Oil pump — 3. Crankshaft —
A. Vacuum pump oil supply hole.
Clearance between the crankshaft gear teeth and the oil
pump drive gear 0.003 ÷ 0.2 mm.
The assembly must not be overhauled; in the event of
defective operation, it must be replaced.
503010
Oil pump
Figure 249
The oil pump (3) is a gear pump driven directly by the
crankshaft.
Print 603.93.651
Characteristic data
transmission ratio
displacement
pumping diameter
number of teeth
height
oil pump minimum speed
oil pump max. speed
oil pump over-revs
oil pump forced over-revs
speed
torque
power draw (calc.)
Oil temperature: 100°C — closed recirculation —
max. outlet pressure 5 bars
engine speed rpm
(oil pump speed — rpm)
750 (862)
3900 (4485)
Vacuum pump
The vacuum pump (2, SENZA CODICE), with radial blades,
is also incorporated in the GPOD (1, Figure 249). It is driven
directly by the oil pump.
transmission ratio
75517
displacement
volume to drain
volume to drain with EGR
chamber diameter
rotor diameter
cam
number of blades
height
vacuum pump minimum speed
vacuum pump max. speed
vacuum pump over-revs
vacuum pump forced over-revs
theoretical flow rate at minimum (air)
actual flow rate at minimum (air) —
at atmospheric pressure
Theoretical speed at max. speed — (air) 444.4 l/min
Actual flow rate at max. speed — (air)
at atmospheric pressure
measured power draw (maximum)
speed
torque
power draw (calc.)
Oil temperature: 100°C — engine speed 750 rpm
tank
(litres)
4.5
5.6
75516
9
F1A ENGINE
1.15
16.2 cm
49.5 mm
11
862 rpm
4485 rpm
5247 rpm
6279 rpm
2500 rpm
2.1 Nm
550 W
capacity (l/min)
12
68
3.25
86 cm
4.5 litres
65 mm
50 mm
7.5 mm
34 mm
994 rpm
5168 rpm
6046 rpm
7235 rpm
85.5 l/min
46 l/min
60 l/min
2500 rpm
2.1 Nm
550 W
(pump speed 994 rpm)
vacuum
0.5
(bar)
4.5
6.0
time (sec)
(
)
9.0
117
3
7
3
9 litres
3
0.8
12.5
16.5
24.0
Base - March 2006
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