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4.6.13 Pump Shaft and Bearings Removal (Long Coupled Versions only)
• Follow procedures for the removal of the hose, front cover and rotor
• Before starting this procedure it is recommended that you purchase a complete set of
replacement parts (a bearing assembly - seal kit; drive shaft; Key kit and bearing kit)
Isolate power supply
• Remove the coupling guard and disconnect the coupling from the input shaft of the pump
• Remove bearing assembly from pump housing (it may be necessary to remove the gear
motor)
• Remove Allen bolts, sealing plate and sealing plate O-ring
• Remove front lip seal
• Secure pump shaft with lifting equipment and support weight. Follow manufacturer’s
instructions for safe operation of lifting equipment
• Remove front roller bearing
• Carefully lift the pump shaft out from the bearing housing
• Remove the ball bearing
• Remove the front lip seal
• Clean the bearing housing
4.6.14 Pump Shaft and Bearings Installation
• Installation is opposite of removal procedure
• Grease both bearings thoroughly prior to installation. Half fill the bearing house with grease
after installing the ball bearing; install the shaft with the roller bearing in position. Take care
when tapping the bearing home to ensure the inner race and bearings are not damaged
(1) Do not strike the pump shaft or inner race or the bearings
(2) Once installed, the bearings are greased for life do not lubricate after installation
4.7 Drive Selection
• Your VERDER distributor will be pleased to select a suitable drive to best fulfil the needs of
the duty you require
• You should ensure that the drive selected is sufficiently powerful to overcome the starting
torque requirements of the pump at the pressure at which it is shimmed to operate - refer to
the starting torque settings that follow:
