Service Instruction Sheet
Introduction
These instructions are intended for use with comparator rebuild kit (
PN
3143). Rebuild kit 3143 con-
tains all of the parts and tools required to rebuild the
GaugeCal
XP
™
pressure comparator. Rebuilds
should be performed only by qualifi ed personnel.
Service Instructions
1
Remove all gauges from the
GaugeCal
XP
pressure comparator
(fi gure 1)
.
2
Tip the comparator on its end to completely
drain the water, oil, or isopropyl alcohol from
the system. Always dispose of fl uids in a
responsible manner.
3
Use a 3mm Allen key to remove the two (2)
cap screws securing the Reservoir to the
Main Seal Block, then lift to remove the Res-
ervoir and Reservoir o-ring (
PN
2018)
(fi gure 2)
.
4
Remove the press-fi t Reservoir Vessel,
and replace the lower seal o-ring (
PN
3303
or
PN
3376)
(fi gure 2)
.
*
Note:
The
GaugeCal
XP
is assembled with
a Reservoir o-ring in one of two sizes. Com-
pare your o-ring to the illustrated parts list
on page 6, to determine the appropriate
replacement size for your unit.
5
Use a 5mm Allen key to remove the Handle
Assembly cap screw and washer, then pull to
slide the Handle Assembly from the Piston
Assembly
(fi gure 3)
. Be sure to also remove
the Key from the Piston Assembly Leadscrew
(fi gure 3)
.
PRESSURE COMPARATOR
10000PSI–700bar
Gau
G
eCa
L
XP
XP
™
Figure 1
Figure 2
Figure 3
C R Y S T A L
engineering cor po ra tion
PSI
50
0
300
Gauge
Base
R
ese
rvoir
O-rin
g
(
PN
2018)
O-rin
g
(
PN
3303)
(
PN
3376)
or
*
Ha
n
dle
Key
Leadsc
r
ew
