Circor GLH8L-462 Series, Instruction Manual And Parts List

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Figure 3. Mechanical Seal Drawing
15. Loosen setscrew (3E, figure 3) from seal spring holder (3D, figure 3) and slide mechanical seal rotating
assembly (3, figure 3) from seal sleeve (26).
16. Remove O-ring (69 or 25) from internal groove of seal sleeve (26).
17. Inspect power rotor (22) shaft and seal sleeve (26) and remove any nicks or burrs which are present.
Polish power rotor shaft to remove any rust or oxidants that may be present under seal sleeve. The
manufacturer recommends replacement of ball bearing (31), mechanical seal (27), gasket (65), and O-
ring (69 or 25) when these parts are disturbed from their original installed position. All parts should be
coated with light lubricating oil to assist in assembly.
18. Install O-ring (69 or 25) in internal groove of seal sleeve (26).
19. Install rotating assembly (3, figure 3) of mechanical seal (27) on seal sleeve (26), position against
shoulder of seal sleeve (26). Install and tighten setscrew (3E, figure 3).
20. Install stationary insert (1, figure 3) and O-ring (2, figure 3) into seal seat adapter (63), ensuring that lock
pin engages slot of stationary seat. Install gasket (65) in seat adapter (63). Install assembled seat
adapter subassembly (63) on seal sleeve (26) next to installed mechanical seal rotating assembly, using
caution to avoid damage to stationary seat and O-ring (1 and 2, figure 3).
21. Compress mechanical seal enough to expose spiral ring groove and install spiral ring (28) in seal sleeve
(26) to lock mechanical seal (27) assembly into place.
22. Install assembled seal sleeve (26) on power rotor (22) shaft until it rests against balance piston (24). Use
caution when installing seal sleeve (26) to avoid damage to installed O-ring (69 or 25).
23. Install inner spacer (29) and outer spacer (30) on power rotor (22) shaft. Align outer spacer (30) so
openings correspond to drain hole and slots in end cover (13).