Filter
Top Products
32 Disassembly and assembly CR/EN (1004) 4.0
7.4 Back-Pull-Out system
The pumps are designed with a Back-Pull-Out system. The pump unit is designed with a
spacer-coupling, the spacer of this coupling can easily be removed. After that the
bearing bracket with the entire rotating part can be removed. This means that almost the
whole pump can be dismantled without having to detach the suction and delivery piping.
The motor remains in its position.
7.4.1 Disassembling the guard
1 Loosen bolts (0237) and remove these. See figure 9.
2 Remove the guard (0270).
7.4.2 Disassembling the Back-Pull-Out unit
1 Remove the spacer.
2 Disconnect possible flushing and/or cooling lines.
3 Loosen the bracket support (0140) from the base plate, see figure 8.
4 Remove the nuts (0810) and washers (0805). Tighten alternately both bolts (0820)
until the pump cover (0110) is released.
5 Pull the entire bearing bracket (2100) from the pump casing. The entire bearing
bracket of large pumps is very heavy. Support it with a beam or hang it in a pulley
sling.
6 Remove the coupling half from the pump shaft and remove the coupling key (2210).
7.4.3 Assembling the Back-Pull-Out unit
1 Fit a new gasket (0300) into the pump casing and fit the entire bearing bracket back
into the pump casing. Place washers (0805) and tighten the nuts (0810) crosswise.
For tightening moment of the nuts see paragraph 10.1.3 "Torques settings for nuts for
pump casing".
2 Fix the bracket support (0140) on the base plate.
3 Reconnect the flushing and/or cooling lines.
4 Fit the coupling key (2210) and fit the coupling half onto the pump shaft.
5 Fit the spacer of the spacer coupling.
6 Check the alignment of pump and motor shaft, see paragraph 3.4.3 "Alignment of the
coupling". If necessary, realign.
Figure 8: Back-Pull-Out principle.
0140
2100081008050110
0820