Viking Pump TSM285: Classic+ Lobe Pump - Manual (Page 21)

SECTION TSM 285 ISSUE A PAGE 21 OF 36
- Install product seals; refer to section 5.0 or section 6.0.
- Install casing (3.01) to gearbox (4.01), noting it locates on
dowels (4.03), securing with dome nuts (4.08).
- Install rotors (2.01) with O-rings (2.03 and 2.04) and retainers
(2.02) tightening to correct torque, refer to section 8.2, using
socket tool supplied (not shown).
- Check all rotor clearances, front, rear, top/bottom, sides’ and
mesh, refer to section 8.1, Clearance Chart.
- Install head (1.01) with O-ring (1.02) and secure with nuts
(1.03) tightened to correct torque, refer to section 8.2.
4.3 CP50 PUMPS - DISASSEMbLy
AND ASSEMbLy
4.3.1 CP50 HEAD AND
ROTOR REMOVAL
Follow recommended shutdown procedure - refer
to section 3.5.
- Refer to Figure 39.
- Gradually loosen head retaining dome nuts
(1.03). Care should be taken as there may still
be residual product and pressure in the pump
head and as the dome nuts are loosened, this
will vent to atmosphere.
- Remove dome nuts (1.03).
- Remove head (1.01), using lever slots where necessary and
the head O-ring (1.02).
- Remove rotor caps (2.02) with tool (supplied, not shown).
Note: The tool provided should always be
used to remove the rotor cap. The use of
other tools may damage the rotor cap.
- Remove rotor cap O-rings (2.03).
- Loosen by 2 full turns all screws in rotor retainer (2.05). Once
this is done the retainer may release its grip. If it does not,
loosen further the screws until the assembly becomes free
to remove.
(On some brands of locking device there are two screws that
are different in color (these may also have a washer under the
head). Once these screws are removed tapped holes will be
revealed. By inserting two jackscrews (M8 x 40 setscrews),
into the tapped holes and tightening, the retainer’s grip is
broken. Remove the retainers’ (2.05).
- Remove rotors (2.01) from shafts (5.01 and 5.02).
- Remove O-rings (2.04) and keys (2.06).
4.3.2 CP50 CASING REMOVAL
Note: Ensure all pipe work is disconnected
before commencing casing removal.
4.3.2.1 CP50 CASING REMOVAL
fOR PUMPS fITTED WITH
SINGLE UN-fLUSHED
MECHANICAL SEALS
AND O-RING SEALS
(After completing 4.3.1)
- Remove dome nuts (4.08).
- Slide casing (3.01) from gearbox (4.01), noting it is located
on dowels (4.03).
Single Un-flushed Mechanical Seals as shown in Figure 40
and see sections 5.3.1 for removal and 5.3.2 for replacement.
Single O-ring Seal for CP50 see Figure 41 and see section
6.3.1 for removal and replacement.
- Remove O-ring seal (7.04) from casing (3.01).
- Slide casing (3.01) from gearbox (4.01) noting it is located on
dowels (4.03).
4.3.2.2 CP50 CASING REMOVAL
fOR PUMPS fITTED
WITH SINGLE fLUSHED
AND DOUbLE fLUSHED
MECHANICAL SEALS
- Refer to Figure 42 for Single flushed mechanical seal for
CP50.
- Refer to Figure 43 for Double flushed mechanical seal for
CP50.
- Prior to removal of casing (3.01), remove seal housing nuts
(7.18) from studs (7.17) and separate housing (7.06) from
casing (3.01).
- Remove dome nuts (4.08).
- Slide casing from bearing housing (4.01), noting it is located
on dowels (4.03).
figure 39
Head and Rotor Components