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Front Cover Removal
Never remove front cover when the hose is still in position. The hose must be removed following
the procedures in the section on ‘Hose Removal’
• If necessary fit the lifting eye to the front cover by removing the top left of centre fastening
bolt and screwing the eye in to the threads provided, then fit the appropriate lifting equipment
• Remove the front cover bolts and remove the front cover. Remove the front cover bolts and
the four nuts from the studs, and remove the front cover
Note: Take extreme care when lifting and removing the front cover
• Remove front cover O-ring
When removing the front cover, lifting equipment should be used to support the weight. Always
use lifting equipment safely in accordance with the manufacturer’s recommendations. The pump
is provided with a lifting eye, which can be fitted into the threaded holes of the front cover
(located in the top left of centre of the front cover underneath the bolts) to assist with lifting.
Take care not to drop the front cover as this is likely to cause serious injury
Removing the inspection cover will make it easier to manipulate the front cover; you should use
lifting equipment - follow the manufacturer’s instructions for safe operation of lifting equipment
4.6.5 Front Cover Installation
• Check the front cover O-ring for signs of damage and correct size. Lightly grease the O-ring
groove on the pump housing and fit the O-ring in to position
Note: Do not over grease the front cover O-Ring groove
• Installation of the front cover is the opposite of the removal procedure
4.6.6 Shimming the Rotor Shoe
The purpose of the shims is to achieve the required operating pressure & prevent back-flow or
slip at the minimum operating speed. Additional shims will increase the degree of compression
of the hose. You should study the photos (Figure 22) in detail
