Five Star JHP - Manual (Page 15)

Page 15
Figure 5. Remove the Impeller
Impeller
Self Sealing Left
Handed Screw
Backplate
Figure 6. Diffuser and Impeller Exploded View
Backplate
Diffuser Screws with Washers (2)
Diffuser
Impeller
Mechanical
Seal
Diffuser O-Ring
Backplate
O-ring
Self Sealing Left
Handed Screw
Figure 3. Remove the Diffuser
Backplate
Screws
with
Washers (2)
Dif fus er
Motor
Motor
Dif fus er O-ring
Figure 4. Remove the Diffuser O-ring
Pump Body
Diffuser
Diffuser
O-ring
6. Remove the motor shaft cover on the back of
the motor by twisting the hex-head screw with
a 90° crescent wrench (see Figure 2). The motor
shaft will be exposed.
7. Hold the exposed motor shaft with a ½"
wrench while removing the impeller center
screw using a #3 Phillips screwdriver (see
Figure 5).
NOTE The impeller center screw is a left-hand threaded
screw, therefore turn the screw clockwise to
loosen.
8. Hold the motor shaft with a ½" wrench while
unscrewing the impeller from the motor shaft
with your hand.
NOTE The impeller is a right-handed thread, therefore
turn impeller counter-clockwise to unscrew.
9. Inspect the impeller and diffuser for signs of
rubbing and/or damage.
6.2.3 Impeller Replacement
1. While holding the motor shaft with a ½"
wrench, thread the impeller onto the motor shaft.
H a n d - t i g h t e n t h e i m p e l l e r u n t i l i t i s
secure. Install the impeller center screw
i n t o t h e c e n t e r o f t h e i m p e l l e r a n d
tighten, using a #3 Phillips screwdriver.
Do not overtighten.
NOTE The impeller center screw is a left-hand threaded
screw, therefore turn the screw counter-clockwise
to tighten.
Mechanical Seal