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C)
Remove all burrs and setscrew marks from drive shaft.
D)
Do not remove the seal unless a new replacement seal is available; because the seal's
wedge will be damaged upon removal.
E)
Do not reuse 0-rings.
Section (C)
Single Internal Mechanical Seal
1)
Remove the mechanical seal (11) from the front housing first by removing the 1/8
inch NPT plug (9) and then loosening the four setscrews which are accessible
through the 1/8 inch NPT opening by rotating the pump shaft.
2)
Remove the seal seat (24) and the seal seat gaskets or O-rings (18) from the gland.
3)
Put new seal seat gaskets or O-ring on the seal seat and install into gland.
4)
Install the mechanical seal (face side out), with retaining clips still on; onto the drive
shaft being careful not to damage the seal's wedge. Then remove the retaining clips.
Slide the seal into the seal chamber centering the set screws in the 1/8 inch NPT
opening.
5)
Using gland plate (with seat installed) press seal into seal chamber until a gap of .09
inches (2.3 mm) exists between the gland plate and the front housing. Then tighten
the setscrews accessible through the 1/8 inch NPT opening. Rotate shaft and tighten
the remaining three set screws.
6)
Install gland screws and lock washers and tighten to 90 in-lbs (10 NM).
Seal Removal
Seal Installation
O-ring type
seal seat
and gland.
Gasket type
seal seat
P. 8
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