Eaton Airflex HEVC 5005, Инструкция по установке, эксплуатации и обслуживанию

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EATON HEVC 5005 Installation, Operation and Maintenance Manual E-CLCL-CC002-E2 May 2017 15
4.1.2.8 Contamination of friction shoes – Mild oil or grease
contamination may be removed with a solvent.
Linings which have become saturated must be
replaced. Also, linings that have been charred from
excessive heat must be replaced.
Caution
When using any solvent, always follow the
appropriate safety precautions.
4.1.2.9 Excessive dust accumulation - If dust becomes
packed in the backing plate cavities, a pressurized
enclosure should be considered. Excessive
accumulations will prevent complete
shoe retraction.
4.2 Removal of element assembly and drums
(dual wide)
4.2.1 Match mark the element assemblies to each other
and to the spider. Also, match mark the drums to
each other and to the drum hub.
4.2.2 Disconnect the dual element from the spider and
allow it to rest on the drums. Remove the air
connection tubes.
4.2.3 Remove the fasteners and spacers attaching the
element halves together.
4.2.4 Disconnect the axial locking device (if used) from
the spider and separate the shafts as far as the
bearings will allow.
4.2.5 Attach an overhead support to the spider-side
element and apply enough tension to support the
weight of the element half and one of the drums.
4.2.6 Remove the through bolts and nuts attaching the
drums to the drum hub. Do not remove the Short
screws and lockwashers which hold the female
drum onto the drum hub. Carefully hoist the spider
side element and drum out from between the shafts.
If an axial locking device is used, take special care
when hoisting the element/ drum from between the
shafts, as the axial locking device mounting plate
binds easily against the face of the spider.
4.2.7 Attach an overhead support to the remaining element
and apply enough tension to support the weight of
the element and drum.
4.2.8 Remove the short screws and lockwashers holding
the drum onto the drum hub and carefully hoist the
element and drum out from between the shafts.
Caution
Use extreme care when disconnecting the
drums from the drum hub. Shear points exist
at the mounting holes.
4.3 Removal of spider and drum hub
4.3.1 Removal may not be necessary. Removal may only
be needed when access is needed to motor shaft,
pinion shaft, or gearbox shaft.
4.3.2 Puller holes are provided for removal. It will require
heating along with the puller. When heating, use
torches with rosebud tips. Heat uniformly to prevent
hot spots and do not exceed 275 degrees F.
4.4 Disassembly of the element
4.4.1 Lay the element flat on a clean work surface.
4.4.2 Remove one of the side plates and inspect the
surface that the friction shoes contact for any
unusual wear patterns, especially look at the
end scallops on the side plates and check for
excessive wear.
4.4.3 Remove the friction shoe assemblies, torque bars
and release springs. If the torque bars and springs
come out of the element with the friction shoe
assemblies, carefully tap them out of the backing
plate cavities. Note wear and replace as necessary.
Caution
Whenever the element is removed and
disassembled, it is always good practice to
replace the release springs.
4.4.4 Remove the air connection elbows and spiral snap
rings which secure the air actuating tube to the rim.
Smaller size elements do not use snap rings.
Carefully remove the air actuating tube from the rim
and thoroughly inspect. Replace if necessary.
Note : The snap rings may no longer be required on certain size
elements. Also, rims manufactured before 1984 were
counterbored at the tube valve hole to accept the snap ring. This
counterbore has been eliminated, and a second snap ring groove
has been added to the tube valve. See Figure 10.
HEVC 5005
3
Snap ring and counterbore eliminated 28HEVC
Counterbore eliminated and second snap ring groove added
51HEVC, 60HEVC, 66HEVC
Snap Ring
Figure 10