10
For steps (d thru g), refer to figure 3, mechanical seal drawing.
d. If stationary seal face is “J” type, remove spacer (14 or 48) and “J’ type stationary seal
seat from power rotor (11 or 63).
e. If seal is O-ring type, remove seal seat adapter (14 or 48) with stationary seal seat.
Remove stationary seat with O-ring from seal seat adapter (14 or 48). Discard O-ring.
f. If single spring, rubber bellows seal, remove rotating seat from shaft (11 or 63), If
multi-spring seal, disengage set screw and then remove rotating seal seat.
g.
Remove spacer (38) from shaft.
5. Remove gasket (44 or 83) from inboard end cover (9 or 46).
6. Remove inboard cover (9 or 46) by removing bolts (10 or 4) or nuts (95) if Size 400, C-
face unit. Also remove washer (30 or 92) where applicable.
7. Remove and discard gasket (8 or 9) from inboard cover (9 or 46) or O-ring (6 or 28) if
pumps are C-face design.
8. On C-flange pumps ONLY, press bushing (33 or 86) from cover (9 or 46). Cover may
require heating to loosen Loctite before bushing (33 or 86) can be removed. Do not heat
to more than 250°F.
9. Remove inlet head (26 or 2) from case (1) by removing bolts (10 or 54) (and lockwashers
(92 or 30) if present). Remove and discard gasket (8 or 9) or O-ring (88) from inlet head
(26 or 2).
10. Remove thrust plate (21 or 29) and spacers (22 or 51) by removing bolts (23 or 53) and
lock washers (24 or 52)
11. If idler cup design, remove cups (20 or 23) from idlers (19 or 21).
12. Remove idlers (19 or 21) from housing (2 or 24) by unscrewing them from housing bores.
CAUTION
ATTENTION
Do not permit idlers (19 or 21) to drop as they emerge from housing (2 or 24).
13. Remove housing spacer (43 or 50) from case (1).
14. Remove pin stop (46 or 6) and fastener seal (45 or 7) from case (1).
15. If pumps are not C-face design, remove balance piston housing (47 or 22) with O-ring (6
or 28). This can be accomplished by pushing on suction end of housing (2 or 24) until
balance piston (47 or 22) emerges.
16. Remove and discard balance piston O-ring (6 or 28).
17. Remove tube (4 or 26) with O-rings (5 or 27) from housing (2 or 24) or balance piston
housing (47 or 22). Discard O-rings (5 or 27).
