celesco PT8101 Replacement Instructions - Page 2

Browse online or download pdf Replacement Instructions for Transducer celesco PT8101. celesco PT8101 4 pages. Measuring cable

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MEASURING CABLE REPLACEMENT
1.
Remove the four socket head cap screws that attach the sensor cover to the
housing/endcover assembly and set aside.
2.
Remove the sensor cover, being careful not to pull on the wires, and set aside.
3.
Loosen the socket head cap screw in the sensor mounting plate
4.
Pry the mounting plate (including the rotational sensor) out of the housing and set
aside. Try to keep the o-ring in place around the mounting plate for ease of re-
installation later.
5.
Remove the 4 small phillips head screws holding the endplate in the housing and
set aside.
6.
Remove the endplate and set aside.
7.
Rotate the spring arbor slightly in the counter-clockwise direction, by hand, to
determine whether there is spring torque. If cable has broken and the spool has
unwound, releasing all spring torque, skip to step 12, otherwise continue with step
8.
8.
Extend the measurement cable enough that it can be cut with wire cutters.
9.
Keep the spring arbor/spool from turning. This is best done by holding the spring
arbor with your fingers and holding the housing with the same hand.
10.
Cut the measurement cable with a pair of wire cutters.
11.
Slowly release all spring tension by letting the housing slowly turn while keeping
a hold on the spring arbor.
12.
There are two allen wrench screws, offset 90 degrees that lock the spool on the
main shaft. You should be able to see them with the endplate removed. Rotate
the spool so that an allen wrench can be inserted in the access hole in the bottom
of the housing and loosen the lock screw.
13.
Remove the allen wrench and rotate the spool so the other lock screw can be
accessed and loosen the other lock screw.
14.
Slide the spool out of the housing. It may be stubborn and you may have to
pound the shaft down through the spool to loosen it. This will open a space
between the spring and spring arbor. The spring still has tension and may shoot
out of the housing. Be cautious when performing this step. Once you get the
spool and shaft loose, the spool should slide the rest of the way. If the arbor
moved, push the spring arbor back in against the spring.
15.
Rotate the spring arbor with fingers to ensure spring is engaged. Make sure the
arbor is rotated counter-clockwise. Noticeable cable tension should build.
16.
Carefully release spring tension by allowing the arbor to spin until all tension is
gone.
17.
Attach spring winding tool to transducer housing. Make sure "T" fits between the
pegs on the spring arbor.
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