101
Figure 135: Tighten the impeller
3.
Loosen the clamp bolts (370C) and the jack bolts (370D).
4.
Measure the gap between the impeller (101) and the seal chamber and stuffing-box cover (184)
with a feeler gauge.
423
370D
370C
Figure 136: Loosen clamp bolts
5.
When you reach a 0.76 mm | 0.030 in. clearance, tighten the clamp bolts (370C), jack bolts (370D),
and lock nuts (423).
This approximates the impeller position when it is set to 0.38 mm | 0.015 in. from the casing. Per-
form a final impeller adjustment after you install the impeller into the casing.
6.
Check the impeller (101) runout.
Check vane tip to vane tip. If the total indicator reading is greater than 0.13 mm | 0.005 in., deter-
mine the cause and correct the issue before you proceed.
The CV 3196 impeller face is cast, not machined. You do not need to check the face runout.
6.6 Reassembly
Model CV 3196 i-FRAME Installation, Operation, and Maintenance Manual
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