Richter RMA-B Series (ASME) - Manual (Page 24)

Series RMA-B close-coupled design Page 24
9475-055-en Revision 14
TM 8256 Edition 06/2011
10 Assembly aids
10.1 Boring template for housing drain
Pump size Ident. No.
Group 1+2 9217-89-1096
10.2 Pull-off device for plain bearing bushes
Pump size Ident. No.
Group 1 9427-89-1005
Product description
If the plain bearing bushes have to be removed from the impeller, we recommend the use of a special pull-off
device. It prevents unnecessary damage to the shock-sensitive silicon carbide components through the use of
suitable materials.
This device is made of malleable rubber material with a plastic handle (polyethylene).
Application
Remove plain bearing bush on the inner magnet assembly side:
Push the device with the rubber part in front from the suction side through the impeller.
Position the two rubber parts (4) centrally on the bearing bush.
Axially tighten the rubber parts by turning the handle (1) to the right; as a result they expand radially.
This creates a friction connection between the device and the plain bearing bush which does not damage the
material.
The bearing bush can now be removed by hitting the handle centre axially.
10.3 Dismantling device impeller-inner magnet assembly
Pump size Ident. No.
Group 1 9427-89-1001
Product description
Serves to dismantle the inner magnet assembly and impeller.
Consists of clamping tube and plate for pushing out the impeller.
Application
The circlip in the notch must be cut open. See Chapter 7.6.4.
Press the device with the clamping tube (1) over the inner magnet assembly.
Tighten the two hex. screws (6) with about 30 Nm.
Using the hex. screw (3), turn the plate (2) against the impeller and press the impeller off.