ITT Goulds Pumps XHD, Installation, Operation And Maintenance Manual

Page: 98 / 160

Maintenance
XHD Installation, Operation, and Maintenance Manual 96
4. Remove the volute liner retention studs (600L) from the casing volute liner (600T) using a
metric stud driver.
Figure 80: Rubber gland liner stud removal
Remove the power end - quick disconnect option for XHD
NOTICE: The quick disconnect power end removal procedure cannot be used if the assembly
does not not have the Suction seal ring option installed. This quick disconnect feature may also
be unavailable depending on the amount of wear on the suction seal ring and internal surfaces.
The XHD power end can be removed when the entire liquid end is still attached to the pedestal
by employing the components available with the XHD complete liquid end disconnect feature.
Rather than removing any portion of the wet end, it can remain assembled to the pedestal and
the power end can be removed as follows:
This procedure can also be employed to change out the entire wet end while not removing the
power end.
1. Loosen the forward (wet end side) bearing frame adjusting nuts (415A) by turning them
clockwise.
2. Loosen the hold-down bolts (352G) and nuts (427D) that clamp the adjustment plates
(234F) to the bearing cartridge housing (228) but do NOT remove.
3. Move the impeller to the back of the volute liner: Turn the two rearward (drive end side)
bearing frame adjusting nuts (415A) on either side of the power frame sequentially
clockwise, 1/2 turn of each nut at a time, to draw the bearing frame and impeller (101)
backwards toward the volute liner (561). Stop when the impeller is firmly seated against the
volute liner.
4. Loosen the three adjustable seal ring jam nuts (357A) by turning them clockwise.
5. Move the suction seal ring towards the impeller: Turn the seal ring square head adjusting
bolts (356F) sequentially, counterclockwise 1/3 of a turn at a time, to move the adjustable
seal ring forward in the casing until it is firmly seated against the impeller, thereby pinching
the impeller between the seal ring and the volute liner.
6. Lock the seal ring adjusting bolts (356F) in place by re-tightening the jam nuts (357A)
against the suction half casing (100A).