30
Disassembly and assembly
CFB/EN (1808) 2.4
7.6.2
Replacing the stuffing box packing S2, S3, S4
To replace the stuffing box packing it is not necessary to disassemble the pump. The
pump should however be drained, see paragraph 7.3 "Liquid draining".
The item numbers used are referring to figure 8.
1 Remove the guards (0270).
2 Loosen the nuts (1810) and push the gland (1140) backward as far as possible.
3 Remove the old packing rings (1120) and (for S3) the lantern ring (1130).
4 Clean the packing space properly.
5 Check whether the shaft sleeve (1100) or the pump shaft (2200) is damaged. If so,
you still have to disassemble the pump. Then proceed with paragraph 7.6.4
"Disassembling the shaft sleeve".
7.6.3
Mounting a new stuffing box packing S2, S3, S4
1 Bend the first packing ring open and put it around the shaft sleeve (1100) resp. the
pump shaft (2200). Press it strongly against the bottom ring (1110) at the bottom of
the stuffing box.
2 For S3: fit the lantern ring (1130).
3 Fit the subsequent rings one by one. Press them down properly. Make sure that the
cuts of the rings are positioned 90° turned in relation to each other.
4 Press the gland against the last packing ring and tighten the nuts (1810) by turns by
hand.
5 For adjustment of the gland see paragraph 4.6.1 "Stuffing box packing".
6 Fit the guards (0270).
Figure 8:
Stuffing box packing S2, S3 and S4.
4041
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