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4. Maintenance 4.4 Assembly
4.4.2 Fitting Shaft Assemblies
Step 1
Replace the shaft abutment spacer (27) in:
- On models S1, 2, 3 and 4 and horizontally ported 5 and 6 pumps, the bearing bore opposite the rotorcase mounting face with
the additional machining mark.
- On models S5 and 6 vertically ported pumps, the right hand bearing bore when viewed from the front of the pump.
Step 2
Identify drive and auxillary shaft positions according to gearcase cover (5) orientation.
Step 3
1. Using a soft faced mallet tap the shafts (24 and 25) into the
gearcase (1).
2. If the bearings have been replaced, a new abutment spacer
will probably be needed. It is vital to ensure the rotor
alignments is within the limits set in section 4.4.4.
4.4.3 Fitting seal retainers
Step 1
Clean the rear face of the seal retainers (14), fit in position and tighten.
Step 3
Replace and tighten the screws (15).
Step 2
1. Check rotor alignment is correct by reffering to the rotor abutment alignment in section 4.4.4.
2. When rotor alignment is correct remove seal retainers and press new lip seals (16) into seal retainers.
3. Apply liquid sealant onto the front of the gearcase (1) and push the seal retainers into position. Make sure lip seals are not
damaged when sliding them onto the shafts.
