6.6.8 Install the casing wear ring (S, M, L, and XL enclosed impeller)
This procedure applies to the maintenance of an enclosed impeller
.
1. Install the wear ring (164) in the casing.
2. If necessary, locate, drill, and tap three new setscrew holes, spacing them equally between the ring
and the ring-seat area.
3. Install the setscrews and upset threads.
6.6.9 Install the casing wear ring (XL1, XL2-S, and XL2 enclosed impeller)
1.
Install the casing wear ring studs (356E) into the casing wear ring (164).
2. Install the casing wear ring gasket (360P) on the casing wear ring studs (356E).
3. Align the casing wear ring studs (356E) with the holes in the casing (100), and install the casing
wear ring (164).
4. Install the hex nuts (357A) on the casing wear ring studs (356E) and tighten in a crossing pattern.
6.6.10 Install the back pull-out assembly
1.
Adjust the impeller so that the gap between the back pump-out vanes and the cover is approximate-
ly 0.02 in. (0.50 mm).
2. Place the casing gasket (351) on the stuffing-box cover (184).
3. Place a sling from the hoist through the frame arms above the pump shaft.
6.6 Reassembly
Models 3180, 3181, 3185, and 3186 Installation, Operation, and Maintenance Manual 111
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