Slurry Pump
WH201A1B010EN_01E.DOC JAN 04-W08
Care and maintenance
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9.5.4 Shaft and bearing assembly - removal and fitting
The following instructions assume that the pump is installed complete with the drive unit
and is connected to the suction and discharge pipework.
1. Removal
a) Remove the drive safety guard and disconnect the drive belts or drive coupling
as applicable.
b) If necessary, remove the drive motor to provide sufficient space to withdraw the
bearing frame assembly from the case.
c) Remove the wet end assembly (refer to sections 9.5.2 & 9.5.3)
d) Where applicable, remove impeller release mechanism from the shaft – see
section 9.5.2 (iii).
e) Remove the housing clamp (P29) and cover (P24).
f) Slacken the tension screws (P23), adjusting screw (P19) and locknut (P38).
Remove the adjusting screw and retaining plate (P22).
g) Remove the saddle screws (P20) and lift out the saddle (P18).
h) Remove the grease nipple (B13) from the end cover at the wet-end of the shaft.
i) Ease the shaft assembly rearwards out of the bearing frame. When possible,
especially on the larger pumps, fit a strop sling around the bearing housing to
take the weight as it is withdrawn completely from the frame. Remove the
tension block (P21) as the assembly is withdrawn.
j) Place the shaft and bearing assembly on suitable supports, ideally wooden vee
blocks.
2. Re-fitting
a) Clean and degrease the bore of the bearing frame. Coat the machined
surfaces with anti-seize compound.
b) Using a suitable strop sling to lift the assembly, insert the shaft and bearing
assembly, threaded end first, into the bore of the frame.
c) Rotate the bearing cylinder housing in the frame so that the tapped holes for the
saddle screws are uppermost. Fit the following parts into position:
• Tension Block (P21)
• Adjusting Screw (P19) into the saddle
• Saddle (P18) (Do not fit screws at this stage)
• Retaining Plate (P22)
• Housing clamps (P29) and Housing clamp screws (P16) - tighten temporarily.
d) Finally, position the bearing cylinder housing so that the saddle screws (P20)
can be inserted and fully tightened to the correct torque. See section 11.1.
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