XV. Inspection and Part Replacement
1. Guide Replacement Criteria:
2900 Series Guide should be replaced:
a. If the sliding surface is galled, pitted or
scratched or the machined gasket surfaces
are damaged.
b. The “A” dimension (See Figures 37 and 38)
exceeds A max. in Table 6.
Table 6: Guide Critical Dimension
Orifice
A max.
Orifice
A max.
in.
mm
in.
mm
D
.455
11.56
N
1.876
47.65
E
.455
11.56
P
2.314
58.78
F
.455
11.56
Q
2.314
58.78
G
.500
12.70
R
2.314
58.78
H
.688
17.48
T
2.313
58.75
J
1.001
25.43
U
2.313
58.75
K
1.251
31.78
V
6.446 163.73
L
1.376
34.95
W
8.446 214.53
M
1.751
44.48
1. Base: Inspect general condition for cracks or
holes. Look for any corrosion issues.
2.
Bellows: Inspect general condition for cracks,
holes or deformation of convolutions. Check for
any corrosion or pitting.
3. Cover Plate: Cover Plate Should be reused if:
a. The sliding surface in the dome area is not
galled, scratched, corroded or pitted.
b. The Gasket surface is not scratched,
corroded or pitted.
4. O-Ring Retainer: Inspect surface that sits on the
disc for any corrosion or defects that might
cause the disc not to sit flush with nozzle.
A
Figure 42b: V & W Orifice
Figure 42: Guide Critical Dimensions
(Metal Seat)
A
Figure 42a: D-U
Orifice
Figure 43: Guide Critical Dimensions
(Bellows)
Figure 43b: H-U
Orifice
A
Figure 43a: D-G Orifice
A
A
Figure 43c: V&W Orifice
Consolidated 2900 Series Generation II POSRV Instruction Manual
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