HARBEN CENTURY, Service Manual

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Flowplant Century Pump Manual
4.3.9 Re-Assemble Pump
After carrying out any repair/replacement procedures, re-assemble the pump as follows:
i. Place the Shaft (17) into the repair stand, ensuring that '0' ring (72) is fitted, and in
good condition.
ii. Assemble Delivery Crankcase (3) with Oil Seal (81) and Carrier (10), and with '0' ring
(71) fitted so that the inner race of the Bearing (12) is supported. Then, from the
outside, slide the Sleeve (8) through the Bearing (widest diameter on the outside).
iii. Lubricate '0' ring (72) with pump oil to avoid damage. Slide the Crankcase, with Sleeve
fitted, over the Shaft.
iv. Place Key (29) in the Shaft keyway.
v. Slide Bearing (11), with Eccentric (6) pressed in, over the Shaft until it rests on Bearing
(12).
Note: Lip on Eccentric (6) should face Bearing (12).
vi. Fit Circlip (54) into the bottom Bearing groove, then fit the Retaining Ring (28) over the
Bearing to rest against it.
vii. Inspect '0' rings (71) ensuring they are in good condition. Grease '0' rings (71) and
Barrel bores of Crankcase.
Note: During the following part of the procedure, refer to Fig 4.3 for Barrel Code
positioning.
viii. Starting with the Barrel marked 'A', place this in the Crankcase with the Piston and
Slipper Assembly in the Cylinder. Locate the Slipper (27) into the Retaining Ring,
making sure that the Shear Pin (31) locates in the Barrel.
Fig 4.3 Barrel Code
62