Crystal GaugeCalXP Rebuild Kit User Manual

Page 4

Page 4

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GaugeCal

Service Instruction Sheet

C R Y S T A L

engineering corporation

Remove the MPF-1/4FPT and MPM-MPM fit-

tings from the Rear Gauge Base. Use a 5mm
Allen key to remove the four (4) cap screws
holding the Rear Gauge Base and its o-ring
(PN 4114 or 3130) from the top of the Mani-
fold Block. Remove the o-rings (PN 3981)
from the MPF fitting on both the Gauge Base
and the MPF-1/4FPT. Repeat for Front Gauge
Base.

If the comparator is fitted with an optional

Fine Adjust Kit, continue to step 18. If not,
you may skip ahead to step 24.

Note:

A comparator without the Fine Adjust

option is instead fitted with an Accessory
Cap, plus an o-ring that should be replaced.
The screws for the plate will require a 4mm
Allen key to remove. Screws included with
older Fine Adjust Kits will require a 5mm key,
while those included with recent, redesigned
kits will require a 4mm key.

Use either a 4- or 5mm Allen key to remove

the four (4) cap screws holding the Fine Ad-
just to the side of the Manifold Block, then
pull the Fine Adjust and its o-ring (

2018

3130) away from the Manifold Block

(figure 13).

Use a 3mm Allen key to loosen the set screw

inside the Fine Adjust knob, then slide the
knob off of the piston (figure 14).

Use a 15mm box wrench to remove the Fine

Adjust bushing from the body, then slide the
bushing and its o-ring (

2018) off of the

piston (figure 15).

With the front of the Fine Adjust body facing

toward you, turn the piston clockwise until
the piston threads are clear of the hole in the
back of the Fine Adjust body (figure 16).

From the back of the Fine Adjust body, slide

out the piston (figure 17).

Figure 12

Figure 13

Figure 14

Figure 15

MPF-GC

Internal O-rings

(

3981)

(1)

MPF-1/4FNPT

O-ring

(

4114 or 3130)

MPM-MPM

O-ring

(

2018 or

3130)

Fine Adjust

Knob

Fine Adjust

Bushing

O-ring

(

2018)

When reassembling, apply

Dow Corning 111 or a similar

silicone-based lubricant .