52
. After inserting the seat ring, check that it is plane-parallel in relation to the casing part.
. The surface of the shaft protecting sleeve must be absolutely clean and smooth, and the
sleeve,s mounting edge must be chamfered.
. When sliding the rotating unit onto the shaft protecting sleeve, take appropriate steps to
protect the surface of the shaft protecting sleeve from damage.
Re-installing the mechanical seal - cylindrical casing cover
The notes and steps stated in ( Section 7.5.1 Page 50) to ( Section 7.5.2 Page 50) have been
observed/carried out.
The assembled bearing and the individual parts of mechanical seal 433 are kept in a clean
and level assembly area.
All dismantled components have been cleaned and checked for wear.
Any damaged or worn parts have been replaced by original spare parts.
The sealing surfaces have been cleaned.
1. Slip thrower 507 (if any) onto shaft 210 from the pump end.
2. Fasten seal cover 471 with inserted O-ring and the seat ring of the mechanical seal to casing
cover 161 with hexagon nut 920.02.
3. Insert casing cover 161 with O-ring 412 into lantern 344; watch joint ring 411.
4. Fit the rotating unit of mechanical seal 433 on shaft protecting sleeve 524 (observe
distance B - see Supplementary Sheet of the mechanical seal).
5. Slip pre-assembled mechanical seal 433 and shaft protecting sleeve 524 onto shaft 210.
Re-installing the mechanical seal - conical casing cover
The notes and steps stated in ( Section 7.5.1 Page 50) to ( Section 7.5.2 Page 50) have
been observed/carried out.
The bearing assembly and the individual parts of mechanical seal 433 are kept in a clean
and level assembly area.
All disassembled parts have been cleaned and checked for wear.
Any damaged or worn parts have been replaced by original spare parts.
The sealing surfaces have been cleaned.
1. Slip thrower 507 (if any) onto shaft 210 from the pump end.
2. Carefully press the stationary seat ring of mechanical seal 433 with O-ring into casing cover
161.
3. Fit casing cover 161 with inserted seat ring into lantern 344.
4. Slide the rotating unit of mechanical seal 433 and spacer ring (if any) onto shaft protecting
sleeve 524 (observe distance B - see Supplementary Sheet of the mechanical seal).
5. Slip pre-assembled mechanical seal 433 and shaft protecting sleeve 524 onto shaft 210.
7.5.3.2 Packing the gland
Fig. 16: Stuffing box packing chamber a) with lantern ring and b) without lantern ring
a)
b)
l
d
a
d
1
l
d
a
d
1
7 Servicing/Maintenance
