108-A00 page 9/14
MAINTENANCE
Figure 7 – Location of Hub Capscrew
Failure to use care when handling
magnets can cause personal injury
Strong magnetic
field can cause
personal injury
11. Remove driven magnet assembly (52) and key (35A). Set
driven magnet assembly on a nonmagnetic surface, away
from any magnetic components.
12. Slide inboard head (20) up wet end shaft (13) and set
aside. Head may require light prying around outer
diameter, if it is difficult to remove. Remove and discard
o-ring (72).
13. Remove vanes (14). And inspect for wear.
14. Carefully remove rotor/shaft (13) from the pump cylinder.
A lifting lug (5/16-18 UNC thread) can be installed in the
end of the rotor/shaft to aid in removal. See Figure 8.
Ensure that rotor/shaft isn’t damaged and that it doesn’t
damage the cylinder, bushing, or head.
Figure 8 – Location of Rotor/Shaft Lifting Lug
15. Flip cylinder over and remove outboard head capscrews
(21).
16. Remove head (23) and bearing cover (27). Discard head
o-ring (72).
RELIEF VALVE DISASSEMBLY
a. Remove the valve cap (1) turn the adjusting screw (2)
to relieve the spring pressure.
b. Remove the relief cover capscrews (5) and relief
valve cover (4)
c. Remove the spring guide (7), spring (8), and valve (9)
from the relief valve bore.
