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 14
4.1.1.2 Contamination of shoes or drum - oil or grease
contamination will reduce the developed torque
of the clutch. Disassembly will be required to
clean any oil or grease buildup. In extremely dusty
environments, dust may accumulate in the backing
plate cavities to the point where the friction shoes
will not properly retract. Dust accumulations may be
vacuumed out of the cavities.
Caution
Do not attempt to use a solvent to remove oil or
grease without first removing the element. While
squirting a solvent into an installed clutch may
improve performance temporarily, a fire hazard exists
from the heat generated during slippage.
Caution
Do not use compressed air to blow dust
accumulations out of the backing plates. Although
the friction material does not contain asbestos, the
dust created as the friction material wears, along
with the dust from the operating environment, may
irritate the respiratory system.
4.1.1.3 Air control components - Check for proper
adjustment of the air control components. Make
sure the safety pressure switches are set correctly
and are functioning properly. Repair any air leaks
as discovered.
4.1.2 Partial or complete disassembly is required to inspect
the following items:
4.1.2.1 Drum diameter wear - Check the O.D. of the drum
and compare to the values shown on Table 6. Minor
heat-checking may be removed by machining the
drum O.D. If the drum has been subjected to
excessive heat, the open end may flare out, giving
the impression that the drum has not worn. It is
therefore important to check the diameter at
several locations across the face.
Caution
Operation of the clutch on a drum that is worn,
or has been machined to less than minimum
allowable diameter will result in damage to the
element components.
4.1.2.2 Air actuating tube – Check that the tube has not
been damaged by excessive heat. If any portion of
the tube is hard or charred, the tube must be
replaced. Check for any blisters, which would
indicate ply separation. A tube in this condition must
also be replaced.
Caution
When working with any friction material,
regardless of material type, always wear
approved safety equipment.
4.1.2.4 Uneven friction lining wear - Tapered wear across
the friction surface typically indicates a worn drum
and/or misalignment. If two or more adjacent shoes
are worn on one end only, the air actuating tube
has most likely developed a ply separation at
that location.
4.1.2.5 Backing plate wear - Wear on the ends of the
backing plates from bearing against the side plates is
indicative of misalignment or thrusting. If wear is on
one end only, and uniform for all backing plates,
a worn drum may be causing the shoes to thrust as
the element engages. If wear exists on both ends of
all of the backing plates, excessive misalignment is
probably the cause. Slight notching in the torque bar
cavity is normal; however, if the notching occurs in a
short amount of time, check shaft alignment. If both
walls in the torque bar cavity are notched, there may
be a significant vibration (torsional) problem.
4.1.2.6 Release springs and torque bars - Excessive wear
at the ends of the torque bars where the release
springs make contact indicates excessive
parallel misalignment.
4.1.2.7 Side Plates - Any wear on the backing plates will
also be reflected as elongation of the torque bar
holes in the side plates.
Table 6
Drum wear limits
Element size
Max. allowable wear on drum
diameter inch (mm)
28HEVC1000 0.19 (5)
51HEVC1600 0.25 (6)
60HEVC1600 0.25 (6)
66HEVC1600 0.25 (6)
76HEVC1600 0.25 (6)
76HEVC2000 0.25 (6)
HEVC 5005
Note: The number preceding the letters “HEVC” in the
element size designates the original drum diameter in inches.
51HEVC1600 - Original drum diameter =
51.56 inches (1309 mm).
Minimum allowable drum diameter is:
51.56 inch (1309 mm) - 0.25 (6mm) =
51.31 inch (1303 mm).