HARBEN CENTURY, Service Manual

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Flowplant Century Pump Manual
xix. Check '0' rings (68 and 69) are not damaged and are in place.
xx. Locate the Inlet Manifold (16) on to Studs (101) and fit Nuts (105) and Washers (85).
xxi. Fill the pump with oil (see Table 4.2 for oil types), and bleed each individual cylinder
using Bleed Screws (93).
xxii. Depending upon the type of pump, carry out a reversal of the initial dismantling
procedure detailed in 4.3.6.
xxiii. The pump may now require further oil bleeding in accordance with the procedure
detailed in Section 3.3.4.
4.3.7 Separating Crankcase Halves
To inspect/overhaul components within the Crankcase, the two halves of the Crankcase
have to be separated. Although this operation can be achieved on the power unit, it is
recommended that the pump is removed from the unit and placed in a Century Pump Stand
(part no 100-279).
Separate the Crankcase halves as follows:
Note: Refer to 4.3.1 for drawing information.
i. Remove the pump as detailed in 4.3.2 (removal and replacement of pump head).
ii. Unscrew the Capscrew (102). If necessary hold the Coupling (5) to stop the Shaft (17)
rotating.
iii. Lift the Cap (56) out of the recess in the end of the Coupling (5).
iv. Remove Coupling (5) and Counter Balance (4) from the Shaft (17). This operation is
made easier using a Puller (part no 201-081).
v. Unscrew and remove Nuts (86) and Washers (103).
vi. Remove the Bell Housing (84).
vii. Remove Key (30) from the Shaft (17).
viii. Place the pump in the repair stand.
ix. Drain the oil from the pump into a suitable container.
x. Depending on the type of pump, carry out one of the following operations:
a. If unit contains a 4-cylinder pump, carry out the procedure detailed in 4.3.3. I to iii .
b. If unit contains an 8-cylinder pump, carry out the procedure detailed in 4.3.4 I to iii.
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