Chapter 9
Visco
Twin_002 EN
Page 9-9
Diagonal grooves opposing
Installation:
1.
Insert drive disks 150 with the pre-assembled drive pins 210 (glue them into the disc ring using
grease) into the seal housing from behind. The drive pins must be directed to the front
2.
Fit backup rings 180 into the rear groove of the seal housing. Push
wave ring 50 against it from behind. Slide spacers 190 against it.
3.
Insert retaining rings 200 using circlip
pliers.
4.
Insert O-rings 140 into the front groove of
the seal housing.
5.
Carefully slide the seal housing onto the
shafts. Position screws 2259 with washers
2260 and screw them into the pump casing.
Tighten the fitting screws
(10 Nm torque).
6.
Carefully slide inboard stators 11 into the seal housing via the shaft. The stator groove must
engage with drive pins 210 of drive disc 150. (see picture)
7.
Place inboard rotors 80 incl. seal faces 40 and built-in O-rings onto the shaft.
Possible damage to property
•
Check the free room of motion of the sealing by pushing the inboard rotor holder and
spinning it bidirectional. During spinning a small gap shall be
noticeable, coming from the gap between the drive pins 210 and
the grooves they are positioned in the seal faces. During
pushing the gap between the stator 11 and the seal housing
1029 shall stay circular constant.
•
Therefore dimension A in the drawing showing the sealing cross
section shall be controlled. (depth gauge)
A = 33.3
±±±±
0.3 mm (
Visco
Twin 130); 25.2
±±±±
0.3 mm
(
Visco
Twin 104)
8.
When installing the screw spindles make sure that the O-rings 130
(are located to the front of the inboard rotor holders) are correctly
placed in their receptacle. The seals will now be prestressed
during the installation of the screw spindles.
9.
Insert O-ring 1088 in seal housing, insert pump housing 1033.
10.
Screw in screws 1016 with washers1015 and tighten.
(torque 150Nm)
11.
Set cover in place with O-ring 2192, screw in screws 1041 and tighten them. (torque 150Nm)
Possible damage to property
•
Slide the screw spindles together onto the shafts.
•
Before screwing in the spindle screws, wet both spindle screws 2180 at the spindle nuts
with a thread-locking compound (factory uses Loctite 270).
•
Observe the required tightening torques (Chapter 4)
•
When replacing screw spindles, you will also need to synchronize them via the pinion gear
drives (see Chapter 9.6)
•
Keep the sliding surfaces free from dust and grease. Avoid any contact with the hands. If
necessary, clean with a soft, clean cloth and acetone.
ATTENTION
ATTENTION
Manual ViscoTwin 104-xx 3A