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•
There are also grease fitting plugs (319H) and grease relief plugs (319Y) installed into the bearing
cartridge housing (228) used for purging and regreasing the grease lubricated XHD power end.
During disassembly these fittings can be removed, inspected and replaced as necessary.
•
There will be no sight glass (319) or opposite sight glass (408N) on the grease lubricated power
end.
Disassemble the power end XHD Value Option, oil lubrication
•
The XHD oil lubricated power end uses double lip seals as bearing isolators. Instead of pipe plugs,
there will be grease fitting plugs in the bearing cartridge end covers for the addition of grease as
necessary to maintain the double lip seal contaminant barrier.
•
The double lip seals have the same fits as the labyrinth seal isolators used on the XHD power end.
There is no difference in the end covers between these or any of the power ends, regardless of the
type of lubrication and basic/fully featured model. The lip seals can be removed in the same man-
ner as described for the XHD power end.
Disassemble the power end XHD, grease lubrication
•
The XHD grease lubricated power end also uses double lip seals as bearing isolators. The same
bearing shields employed on the XHD grease lubricated power end are used as well to properly
maintain grease in the bearings. The bearing shields can be removed, inspected and replaced in
the same manner as shown for the XHD grease lubricated power end.
•
Because of the need to provide grease to both the double lip seal bearing isolators and the bear-
ings themselves, there are grease fitting plugs (319H) installed in both the bearing cartridge hous-
ing (228) and the inboard and outboard bearing end covers (109 and 119). There are also grease
relief plugs (319Y) installed in the bottom of the bearing cartridge housing (228) for purging and re-
greasing of the bearings.
•
There will be no sight glass (319) or opposite sight glass (408N) on the grease lubricated power
end.
6.3 Preassembly inspections
6.3.1 Replacement guidelines
Casing and liners check and replacement
WARNING:
Risk of death or serious injury. Leaking fluid can cause fire and/or burns. Inspect and ensure
gasket sealing surfaces are not damaged and repair or replace as necessary.
Inspect the casing and liners for cracks and excessive wear or pitting. Thoroughly clean gasket surfaces
and alignment fits in order to remove rust and debris.
Casing areas to inspect
The arrows point to the areas to inspect for wear on the casing:
Impeller replacement
This table shows the criteria for replacing the impeller:
Impeller parts When to replace
Vane edges
When you see cracks, pitting, or corrosion damage
6.3 Preassembly inspections
XHD Installation, Operation, and Maintenance Manual
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Summary of Contents for XHD
Page 1: ...Installation Operation and Maintenance Manual XHD ...
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