6.2.2.6 Timing and blocking of gears for VL 7-14-20-27
The timing of the gears is very important and the following
instructions must be correctly followed.
a- Insert the key in the axle groove.
b- Insert the two gears taking care that the reference marks are
matching.
c- Insert the spacer and safety ring of pos. 1 and 2.
d- For fixing the selflocking ring, insert a pin in between the gears
(see fig. 13 - point K)
e- Screw on the rings M45x1,5 by means of the spanner UNI 6752
and with a blocking torque of 350 N/m (the selflocking ring can
be re-used a second time).
f- Bend the tab of the safety ring pos. 2 by means of a punch in
3
40
18
24
9
5
52
43 30
7
27
2611
8
44
51
11
44
51
5
11
Fig. 12
Fig. 12/h
order to block the selflocking ring.
6.2.2.7 Assemble of the fron chamber and of the lobe-housing
group
a- Place the pump with the axles in a vertical position, after fixing
the blocking plane “W”.
b- Insert the o-ring of pos. 36 and the key of pos. 28.
c- Insert the pistons by means of the introduction pipe.
d- Insert the housing gasket of pos. 18 in between the housing
of pos. 23 and the wearplate.
e- Center the group on the n. 4 pins and screw on the n. 8 screws
of pos. 47.
Fig. 14
30
60
330
M8 x 90
W
49
36
28
18
47
23
Fig.13
UNI 6752
K