HARBEN CENTURY, Service Manual

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Flowplant Century Pump Manual
c. Fit '0' ring part of Seal into the groove of the Mandrel.
d. Push the hard plastic part of Seal over the Dolly, using Pusher (part no 201-065), and
locate it in the groove on top of the '0' ring part of the Seal.
e. Using Shrinker (part no 201-066), shrink the Seal enough to fit into the Barrel without
damage.
xii. Place Valve (40) and Spring (36) into Bush (114).
xiii. With reference to Fig 4.2, fit Back Up Ring (78) and '0' ring (76) to Seat (41), and
grease both. Ensure Back Up Ring is fitted as shown.
xiv. Push and turn Seat (41) anti-clockwise into the Mandrel Assembly
Fig 4.2 Inlet Valve Seat
– Back Up Ring and ‘O’ Ring Fitting
xv. Grease (part no 054-041) the Seal (82), including the seal locating position in the
Barrel (83), and push the complete assembly into the Barrel from the inlet end, as far
as it will go by hand.
xvi. Grease both faces of the Collar (42) and fit it over the end of the Mandrel (116) and
Seat (41).
xvii. Grease the Inlet Nut (43) threads and screw it into the Barrel. Torque the Inlet Nut to
that specified in 4.2.3 .
xviii. Apply a thin even coat of grease over the end of the Barrel, which protrudes into the
Inlet Manifold.
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