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6.2.18 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 un-
available 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 em-
ploying the components available with the XHD complete liquid end disconnect feature. Rather than re-
moving 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 for-
ward 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).
7.
Loosen the knock off ring bolts and disassemble the knockoff ring halves(149) from the shaft.
8.
Turn the shaft (122) counterclockwise with a strap wrench or shaft wrench to disengage the shaft
threads from the impeller. This will cause the bearing frame to move rearward on the pedestal until
the shaft disengages from the impeller (101) which is held captive in the casing by the adjustable
seal ring and casing volute liner. NOTE: This should take 4 to 5 complete shaft turns.
9.
Slide the bearing frame backwards away from the liquid end until the shaft is completely free of the
liquid end.
10. Insert hoist hook through the bearing cartridge housing (228) lifting lug.
11. Remove the bearing frame adjustment plate bolts (352G) and threaded adjustment rod nuts on the
outer face of the adjustment plate (234F) ears.
12. Remove and set aside the bearing frame adjustment plates (234F).
13. Tension the hoist fully to lift and move the bearing frame to designated work area.
6.2.19 Remove the expeller (optional feature)
1.
Remove the impeller hub o-ring (412U).
2.
Remove the expeller (263) from the shaft (122).
6.2 Disassembly
XHD Installation, Operation, and Maintenance Manual
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Summary of Contents for XHD
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