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Gilson Company, Inc.
5.5.5 Hydraulic Clamp rod Assembly
Hydraulic clamp rods fit through a series of guide
bearings and draw separator parts together to clamp
trays in place for operation.
WArninG!:
Disconnect the machine from its power
source and lock out the connection prior to perform-
ing maintenance and/or repairs.
To check for wear in the guide bearings, apply pres-
sure to the hydraulic cylinders with your hand, front to
back and side to side. If you have removed a cylinder,
perform this test on the upper end of the hydraulic
clamp rod. If a cylinder (or clamp rod) can be moved
more than 1/32in in any direction, you should replace
parts in the hydraulic clamp rod assembly.
to replace hydraulic clamp rods and parts:
a.
Unplug or otherwise disconnect the Testing
Screen from its power source, and lock out the
connection.
b.
If you have not done so, drain the system; and
disassemble and remove the cylinder, following
the procedure in Section 5.5.4.
c.
Working through the access hole near the base
of the machine, drive the roll pin out of the clamp
rod collar. Slide the clamp rod collar down to rest
on the lower guide bearing.
d.
Loosen the upper and lower guide bearing
screws.
e.
Pull the clamp rod up and out of the separator.
f.
Replace the worn parts as needed.
g.
To reassemble, reverse the procedure, except
DO NOT re-tighten the guide bearing screws.
Follow hydraulic cylinder reassembly instructions.
Now finger-tighten upper and lower guide bearing
screws; then give each an additional 360° tight-
ening with a wrench. Front and rear screws on
each bearing need to be equally tight. If screws
repeatedly loosen during operation, use a little
Loctite.
h.
After fully reassembling the unit with covers in-
stalled, run it empty for a few minutes. It should
run freely and quietly.
5.6 Wire Cloth & Screen trays
Check condition of wire cloth and screen trays both before
and after each operation.
Wire Cloth
Testing grade wire cloth is a precision-made material and
should be treated with care. The ASTM E 11 specification
permits only very slight variations in average opening and
wire diameter of testing grade wire cloth. Abrasion due to
normal use and/or improper cleaning and handling can
cause the wire cloth to be out of specification to a consid-
erable degree before it appears so. Check the wire cloth
periodically for conformance to specifications.
Wire cloth may eventually sag, reducing its effective
screening area. Wire with 1/4in and coarser openings
is rigid and self-supporting. No.5 and finer sizes have
hooked edges which interlock with the tray's side clamps
to provide tension adjustment. Trays with No.16 and finer
wire cloth have wire cloth support strips to minimize wear
and distortion. Backup wire cloth can be furnished as an
option at extra cost, if additional support is desired. Tray
side clamps for hooked edge wire and flat wire are NOT
interchangeable.
Screen Trays
The life of your screen trays can be prolonged by estab-
lishing good procedures for handling and storing trays.
Avoid bumping or bending the corners of the tray flanges.
Bent flanges "work" during operation of the machine and
will eventually break.
Page 15
Gilson Testing Screens: TS-1 & TS-2
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