125 Seal-chamber throat bushing
184 Seal-chamber cover
230 Seal-chamber cover wear ring
Figure 55: Seal chamber cover wear ring
When to replace wear rings
Replace wear rings when the diametrical clearance exceeds two times the minimum clearance as shown
in this table or when the hydraulic performance has decreased to unacceptable levels.
Table 8: Minimum running clearances
Diameter of impeller wear ring Minimum diametrical clearance
mm
in.
mm
in.
<50
<2.000
0.25
0.010
To to 64.99
2.000 to 2.4999 0.28
0.011
65 to 79.99
2.500 to 2.999
0.30
0.012
80 to 89.99
3.000 to 3.499
0.33
0.013
90 to 99.99
3.500 to 3.999
0.35
0.014
100 to 114.99 4.000 to 4.499
0.38
0.015
115 to 124.99 4.500 to 4.999
0.40
0.016
125 to 149.99 5.000 to 5.999
0.43
0.017
150 to 174.99 6.000 to 6.999
0.45
0.018
175 to 199.99 7.000 to 7.999
0.48
0.019
200 to 224.99 8.000 to 8.999
0.50
0.020
225 to 249.99 9.000 to 9.999
0.53
0.021
250 to 274.99 10.000 to 10.999 0.55
0.022
275 to 299.99 10.000 to 11.999 0.58
0.023
300 to 324.99 12.000 to 12.999 0.60
0.024
6.5 Preassembly inspections
Model 3700, 3703, 3710, 3700LF, 3700LFI API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Instal-
lation, Operation, and Maintenance Manual
83
Summary of Contents for Goulds Pumps 3700
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