8
6-3 Cleaning:
WARNING!!!
Petroleum based cleaning solvents are flammable. Smoking or open flames in the vicinity of these solvents is
extremely hazardous and must not be permitted. Disregarding this warning could result in grave personal injury.
Clean all metal parts with a solvent. Use a bristle brush (not metal or wire) to remove tightly adhering deposits.
A fiber scraper may be used to remove the gasket and shellac from casing flange. Blow dry with
clean dry compressed air.
CAUTION:
Never use hydrocarbon liquids (oil or solvent) to clean mechanical seal parts. Use of oil or solvent will
deteriorate material used on the seal.
Use mild soap solution to clean seal parts. Use only your finger to remove dirt. Rinse with clean water
and dry with mild air stream. Use care not to damage or scratch lapped surfaces.
6-4 Inspection:
Visually inspect parts for damage affecting serviceability. Check o-rings and gaskets for cracks, nicks, or tears;
packing rings for excessive compression, fraying or shredding, and embedded particles. Replace if defective in
any way. Mount shaft between lathe centers and check eccentricity for entire length of the shaft. Eccentricity
should not exceed .002 inches (0.05 mm). Bearing surfaces should be smooth; shoulders square and free of
nicks.
Measure OD of impeller hub and ID of pump casing. Compute diametrical clearance (ID minus OD) and
compare with the original pump specifications. Surfaces must be smooth and concentric. Examine impeller
passages for cracks, dents or embedded material. Examine shaft sleeves for wear.
6-5 Reassembly:
The following should prove helpful in reassembling the pump:
1. All parts, inside and out, should be clean. Dirt and grit will cause excessive wear, plus needless
shutdown.
2. Install the impeller key (32) and impeller (2) onto the shaft (6). Double check for correct rotation.
3. Lubricate the O.D. of the shaft sleeve (14) and the I.D. of the opposite half of the mechanical seal (65)
using International Products P-80 Emulsion Temporary Assembly Lubricant or equivalent (available
from
International Products Corporation, 2
01 Connecticut Dr, Burlington NJ 08016 USA, phone 609-
386-8770, Fax 609-386-8438, http://www.ipcol.com
, mkt@ipcol.com). Press the shaft sleeve (14)
through the mechanical seal (65). Coat the interior of the shaft sleeve (14) with Dow Corning 732 Multi
Purpose Sealant o
r equivalent. Repeat for other side.
4.
Install the sleeves (14) onto the shaft (
6) and install retaining rings.
5. Press the mechanical seal faces (65) into the glands (17) and install O-Rings. Lubricate O-rings using
International Products P-80 Emulsion Temporary Assembly Lubricant or equivalent.
6. Assemble the glands (17) onto the shaft (6).
7.
Press the lip seals (89) into the bearing covers (37) and install the covers (37) onto the shaft (6).
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