Sterlco 2016C (Former Compact Series) - Manual (Page 41)

COT-C Series Hot Oil Portable Temperature Control Units Page 41
removed from the pump. Note the mechanical seal may stick
to the shaft causing initial resistance when the shaft is
removed.
10. Remove the mechanical seal parts from the bracket.
11. Clean all parts thoroughly and examine for wear and damage.
Check lip seals, ball bearing, bushings and idler pin and replace
if necessary. Check all other parts for nicks, burrs, excessive
wear and replace if necessary.
Wash bearings in clean solvent. Blow out bearings with
compressed air. Do not allow bearings to spin; turn them
slowly by hand. Spinning bearings will damage race and balls.
Make sure bearings are clean, then lubricate with non-detergent
SAE 30 weight oil and check for roughness. Roughness can be
determined by turning outer race by hand.
12. Casing can be checked for wear or damage while mounted on
bracket.
Pump Assembly
The seal used in this pump is simple to install. If you take care
during installation, good performance will result.
The principle of the mechanical seal is to make contact between
the rotary and stationary members. These parts are lapped to a high
finish, and their sealing effectiveness depends on complete contact.
When requesting special seal information, make sure that you give
the pump model number and serial number.
1. Install bracket bushing if required. If bracket bushing has a
lubrication groove, install bushing with groove at 6:00 o’clock
position in bracket. If carbon graphite, Refer to Installation of
Carbon Graphite Bushings, page 45.
2. Coat shaft of rotor shaft assembly with non-detergent SAE 30
weight oil. Start end of shaft in bracket bushing turning from
right to left, slowly pushing rotor in casing.
Figure 7
Mechanical Seal Assembly