5
5. Starting-up instructions
5.1 Oil level checking
- Before starting-up the pump check that the oil level in the
gearbox reaches the filling port.
(The quantity of oil is 1,0L.)
5.2 Pump test run
- Rotation direction of the pump can be indifferently right or left.
After starting-up it has to be determinate which one is the suction
and which one is the discharge side, due to the rotation direction.
- Subsequently open all the gate-valves and make sure that there
are no narrowings on the suction line.
6. Maintenance
6.1 Ordinary maintenance
a) Check periodically the oil level in the gearbox and take care to
change the oil after the first 100 work-hours.
The quantity of the oil in the gearbox is about 1 litre.
Use the oils suggested at page 3 (Tab. 2)
b) At the end of each pump’s employment it is suggested to wash
the inside and to apply a layer of lubricating grease. To distribute
the grease all around the body, turn by hand the lobes a couple
of times.
Fig. 3
ø 145
ø 50
20
ø 116
6
N° 3
FORI ø 9 a 120°
ø 98,5
6.2 Extraordinay maintenance
6.2.1 Disassembling of the pump.
Previous to the disassembly:
-
Take off the suction and discharge connections
-
Wash out the housing
-
Fix the end plate, drive side, to a rigid, plane, surface
6.2.1.1 Disassembly sequence (Refer to VL 14 spare parts
sheet)
a - Unscrew the filling plug (vent) of pos. 36
b - Remove the draining plug of pos. 19 and check that all the oil
is drained out
c - Unscrew the n. 8 screws of pos. 39 and remove the oil tank of
pos. 20
d - Unscrew the selflocking ring of pos. 28 by means of the suitable
spanner
e - By means of a puller or with two screwdrivers pull off the two
gears of pos. 12-51.
Note: the two gears have timing marks; take care to put
them in evidence before the disassembly. (pag. 11-fig. 13)
f - Remove the keys from the axle, unscrew the n. 3 screws pos.
39 and insert the puller fig. 3 using the same screws
g - Using two screwdrivers as a lever remove the bearing flange
of pos. 4.
N.B.: When operating on the VL40 refer to the VL27 sequence.
h - Move over to the front of the pump and remove the n. 3 screws
of pos. 39
i - Remove the front flange of pos. 5
l - Unscrew the selflocking nut of pos. 28 by means of the suitable
spanner UNI 6752 (same as point 4)
m - Unscrew the n. 6 screws of pos. 38
n - Remove the two flanges of pos. 4
o - Unscrew the n. 8 screws M10x50 of pos. 42
p - By means of a hammer remove the end plate 16 and the wear
plate of pos. 3
q - Remove the whole axle as shown in fig. 6
r - For the VL 27 remove the whole housing and axles/lobes as per
fig. 6 bis.
N
°
3 HOLES ø 9 to 120
°