48 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
48 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
48 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
Vertical Turbine Pumps
Repairs
Document Name: 2001299-VTP-IOM-EN Page 48 of 67
Revision 3 Copyright © 2014, Weir Floway, Inc. All Rights Reserved. Issue Date: December 12, 2014
17. For open lineshaft and enclosed lineshaft construction do the following:
a. Open Lineshaft Construction: each time a lineshaft coupling is exposed by removing a length of the
column pipe, the lineshaft and the coupling must be removed by holding the coupling and turning the
upper lineshaft in right hand direction (line shaft threads are left hand).
Figure 8-1: Correct Positioning of Wrenches on Shafting
b. Enclosed Lineshaft Construction: each time a length of column pipe is removed the enclosing tube
and lineshaft must also be disassembled. Locate the joint (refer to Figure 8-2) and unscrew (left hand
threads) the enclosing tube from the lineshaft bearing (which acts as a bearing for the shaft and also
as an enclosing tube coupling). Leave the lineshaft bearing threaded into the enclosing tube not being
removed (to support the lineshaft). Slide the enclosing tube up to expose the lineshaft coupling and
uncouple as outlined in step 17(a) above.
CAUTION
EQUIPMENT DAMAGE
• When using wrenches on shafting, always place the wrenches on the same side of the
shaft as illustrated in Figure 8-1 on page 48 to avoid excess side strain on shafting.
• Always position the wrench that will grip the shaft above the shaft coupling (that is, on the
upper shaft as viewed when the pump is in the vertical installed position). This must be
done to prevent scoring and burrs on the top ends of the shafting to allow bearings to
slide on/off freely.
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