Viking Pump TSM280: Duralobe (Discontinued) - Manual (Page 43)

Page : 41
4.2.3 Rotor Assembly and Setting Rotor Clearances
see Fig 24.
- Do not install product seals at this point.
-
Install rotors (41) onto shafts (9 and 10) in rotorcase (40), install
retainer o-ring (34) into bore in rotor and secure with rotor retainer (35)
set to the correct torque (see section 5.2) using socket (58).
Note: The retainer o-ring (34) seals the shaft/rotor spline and should not
be re-used if cut, distorted or damaged in such a way as to impair its
ability to form a seal. If in doubt a new o-ring should always be installed.
- Using a depth micrometer or similar device measure front clearance
(A) between the rotorcase and rotor front faces and check that this
corresponds to the appropriate clearance as indicated on the
Clearance Chart, refer to section 5.1.
- If the front clearance (A) is incorrect adjustment of the shims (22)
between the rotorcase and cartridge is required, refer to section 4.2.2
Cartridge to Rotorcase Assembly.
- With rotors (41) installed, check all clearances, front (A), radial (C), rear
(B) and mesh (D), against the Clearance Chart, refer to section 5.1.
Remove rotors (41) and install product seals, refer to section 4.3
Product Seal Fitting and Removal, and reassemble rotors (41)
tightening to the correct torque.
Note: When fitting mechanical seals be sure that the seal stationary
seat (31) is properly engaged with the seal housing (28) drive pin or
serious damage to the pump will result.
- Install o-ring (38) to front cover (39).
- Install front cover (39) to rotorcase (40), securing with dome nuts (36),
tightening to correct torque, refer to section 5.2.
Note: It is recommended that rotors should be installed in pairs,
although parts are available individually.
WARNING
WARNING