INFICON CrystalSix Sensor User Manual

Page 49

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CrystalSix Operating Manual

3

Insert the .125" diameter alignment pin into the alignment hole, as shown in

Figure 4-2 on page 4-6

.

The bellows assembly will be removed at this time. Proceed as follows:

4

Remove the extension spring from the pawl and actuator stem assembly (item
#24).

5

Remove the two #4 fasteners (item #20) that secure the bellows assembly
(item #19) to the top plate (item #10).

6

Carefully remove the bellows assembly. The pawl and actuator stem assembly
(item #24) and the detent (item #41) will be removed with the bellows assembly.

7

Using the 1/16" allen wrench, loosen the 6-32 set screws (item #33) that
secures the ratchet (item #22) and the stop ratchet (item #38) to the carousel
assembly (item #5). Remove the stop ratchet (item #38) and the ratchet (item
#22).

8

Thread the pawl and actuator stem assembly (item #24) out of the bore of the
bellows assembly by rotating the pawl and actuator stem assembly in a
counterclockwise direction. Detach the detent (item #41) and related hardware
(items 40, 42-44) from the bellows assembly (item #19) by removing the #2
fastener (item #42).

9

Discard the bellows assembly.

10

Install the pawl and actuator stem assembly (item #24) into the new bellows
assembly by threading the actuator stem into the mating hold located in the
bore of the bellows assembly. Continue to thread the actuator stem until the
shoulder of the actuator stem is approximately .035" away from the bellows
assembly. This.035" distance specification is for reference only; the actuator
stem position may have to be adjusted to obtain the desired condition as
illustrated in

Figure 1-3 on page 1-6

.

11

Fasten the bellows assembly to the top plate utilizing the two #4-40 x 1.125"
long screws. Do not tighten the screws. Position the bellows assembly in such
a fashion as to allow the actuator stem to come in contact with the ball bearings
(item #25) as illustrated. Tighten the screws.

12

Slide the ratchet (item #22) onto the 0.25" diameter shaft of the carousel
assembly (item #5). Do not tighten the #6-32 set screw (item #33). Slide the
ratchet (item #22) onto the .25" diameter of the carousel assembly. Do not
tighten the #6-32 set screws.

13

Attach the extension spring in the hole provided in the pawl of the pawl and
actuator stem assembly (item #24).

14

Position the ratchet (item #22) such that it engages the pin of the pawl and
actuator stem assembly (item #24).

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