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Gilson Company, Inc.
Keep the pulleys aligned to avoid excessive wear
on the belt.
To adjust or replace the V-belt follow this disassembly
procedure:
a. Unplug or otherwise disconnect the Testing
Screen from its power source, and lock out the
connection.
b. Remove the top and side/back covers, following
instructions in Section 5.2.
c. Loosen the motor mounting bolts.
d. To adjust tension in the V-belt, check first to see
that the pulleys are aligned. Then position the
motor to obtain the proper tension in the V-belt.
Tighten the motor mounting bolts.
e. To replace the V-belt, loosen the motor mounting
bolts, and slide the motor toward the front of the
machine, which will disengage the belt from the
motor pulley.
f.
Before removing the shoulder bolt from the lower
end of the connecting rod on the belt side of the
Testing Screen, insert a pry bar under the front
of the case top and over the top of the separator.
Shift the separator until the holes in the separa-
tor and in connecting rod align. Now remove the
shoulder bolt.
g. After removing the shoulder bolt, rotate connect-
ing rod upward until you can remove the belt.
h. Place the new V-belt around the connecting rod
in the reverse manner.
i.
Replace the shoulder bolt.
j.
Place the V-belt around the pulleys.
k. Make sure the pulleys are aligned.
l.
Move the motor toward the rear of machine until
the proper tension exists in the V-belt. Tighten
motor mounting bolts.
m. Reassemble in reverse order. Do not plug in
or try to operate the Testing Screen without all
covers installed.
5.3.2 Connecting rod Assembly
Gilson recommends replacing entire connecting rod
assemblies to avoid fit and tolerance problems during
installation. Use the following procedure:
a. Unplug or otherwise disconnect the Testing
Screen from its power source, and lock out the
connection. Remove top and side/back covers,
following instructions in Section 5.2.
b. If you are working on a TS-1, first remove the hy-
draulic cylinder. Follow the instructions in Section
5.5.4, "Hydraulic Cylinder Inspection and Repair."
c. Insert a pry bar under the front of the case top
and on top of the separator front and shift the
separator until the holes in the separator and in
connecting rod align.
d. Remove the wristpin shoulder bolt, and remove
the connecting rod.
e. Reverse this procedure to reinstall the assembly.
Do not take apart or remove the main shaft housing
assembly, which is installed using factory fixtures. If
this assembly is moved out of its position, the Test-
ing Screen's internal vibrating assembly will go out
of level. You will NOT get proper test results. The
main shaft bearings are sealed and do not require
lubrication.
5.4 tS-2 Clamp rod Assembly
note: Maintenance procedures for TS-1 Clamp-
ing Assemblies are noted under Section 5.5, "TS-1
Hydraulic Clamping System."
The TS-2 has a threaded, mechanical clamping system.
Continuous overtightening of the clamp rods can cause
premature wearing.
a.
Periodically check your clamp rod assemblies for
wear by following these steps:
•
Unplug or otherwise disconnect the Testing
Screen from its power source, and lock out the
connection. Remove top and side/back covers,
following instructions in Section 5.2.
•
Check for worn guide bearings and/or threaded
blocks by pushing the clamp rods back-to-front
and side-to-side. If the clamp rods move more
than 1/32in in any direction, the guide bearings
need to be replaced.
Page 9
Gilson Testing Screens: TS-1 & TS-2
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