Viking Pump TSM288: SL Series Lobe Pumps - Manual (Page 12)

SECTION TSM 288 ISSUE A PAGE 12 OF 36
When removing and refitting lipseals or O-rings care
should be taken to avoid cutting or tearing the sealing
faces as they pass over keyways, splines, threads or other
potentially sharp or abrasive edges. All lipseals and O-rings
should be carefully examined and if damaged in any way,
replaced on assembly.
All O-rings and sealing lips of lipseals should be lightly lubricated
with a suitable lubricant (silicon grease, etc.) before installing.
When installing lipseals do not allow the rear face to come into
contact with bearings see section 6.3 for details
Prior to beginning assembly, ensure all parts are clean and
free from burrs or damage. Where a vice is to be used, it
should have protective jaws to avoid damage to components.
Do not hammer or apply undue force to install or position
components.
All fasteners are required to be tightened to the required torque
setting during assembly, refer to section 6.2.
The preferred method of installing bearing cones
is to heat them to approximately 120°C (250°F)
prior to installation. During this operation protective
gloves should be used. Once bearing cones
are installed in correct position they should be
allowed to cool before proceeding with assembly.
As an alternative, bearing cones may be pressed
into position providing the proper equipment is
employed and the necessary procedures are
used to prevent component damage.
Under no circumstances should bearing cones or cups be
hammered into position.
4.0 sl sERIEs PUMP dIsMaNTl-
ING aNd assEMblY
Before undertaking any work on the pump the
recommended shutdown procedure should be
followed, refer to section 3.6, and site safety
practices must be observed.
While dismantling or assembling the pump it
is essential to ensure that the pump and/or
components are secured to provide adequate
stability.
Large pump components or sub assemblies
should be lifted using suitable devices. Use
threaded holes for the attachment of lifting eyes
where appropriate.
During dismantling or before assembly all components should
be inspected for fit, wear, and damage. If worn or damaged the
components should be replaced before re-assembly.
The position of all parts should be identified as they are removed
to ensure they are reinstalled in the same position.
Lipseals and O-rings are incorporated within the bearing
housing assemblies and the gearbox cover to contain the
lubricant for the bearings and timing gears. Regular inspection
and correct maintenance of these items will ensure that the
lubrication is sustained and the pump maximum working life is
achieved. To ensure this, it is extremely important that care is
taken when removing and installing new O-rings and lipseals.
When removing and replacing lipseals ensure that the location
bore for the outside diameter and the seat for the back of the
lipseal is not damaged as this may create a leak path for the
lubricant.
3.9.2 JaCKETEd CasING
slas slal slbs slbl slCs slCl slds sldl slEs slEl slfs slfl
a 28 42.4 54.5 65.5 86 67
b 54.5 62 70 93 95 102
C 45 60 66.5 89 117 132
d 1/8” BSP
E 37 - 39 41 - 43 41 - 43 46 - 48 44 - 46 52 - 54 51 - 53 61 - 63 53 - 55 65 - 67 65 - 67 80 - 82
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