Page 510
T41 SERIES
4.
Service
assembly over the sleeve until the
spring holder rests against the
shoulder of the sleeve.
e. The element must slide freely up
and down on the sleeve. It is
necessary to maintain some
downward pressure on the
element because the spring
tension could dislodge the seal
portion of the element.
f. Holding the assembled sleeve
between the thumb and index
finger, slide the assembly onto
the motor shaft.
g. Push the sleeve on until it comes
in contact with the locking collar.
h. Position the collar over the
sleeve end and push the sleeve
on until it stops.
i. While maintaining inward
pressure on the sleeve with one
hand, line up the collar setscrews
with the key in the
shaft sleeve, one setscrew on
each side of the key.
j. Tighten the setscrews snugly.
k. Pressure can now be released
and the sleeve should remain in
position. The spring holder must
be below the impeller wearing
surface of the motor bracket for
proper impeller operation.
4. Install the impeller.
a. Place a key (#23) in the shaft
sleeve.
b. The impeller is a slip fit and
should slide on firmly but easily
until it stops against the impeller
wearing surface. Force should
not be required to install the
impeller in the correct position.
c. The impeller hub should be
facing out away from the motor
bracket. Refer to Figure 4-4 and
4-5.
d. If the impeller does not fit, repeat
steps a. and b. to determine the
problem.
5. Place “O” ring (#7) into the “O” ring
groove in the motor bracket. It is
helpful to stand the motor and pump
assembly on end for this procedure.
6. Remove the thru bolts installed in 2b.
Place the cover over the motor bracket
and install the four (4) 3/8"X4" bolts.
Tighten the bolts systematically,
alternating diagonally across the cover.
7. After the bolts are “snugged up”, make
sure the impeller is not binding by
inserting a 5/32" hex wrench into the
locking collar and moving it left to right.
The shaft should rotate with little or no
resistance. If the shaft will not turn,
loosen the bolts equally until the
impeller moves freely.
Proceed to section 4G Testing and Final
Adjustment.
4F Reassembly (C15 and P15)
All parts should be visually inspected and
cleaned or replaced as outlined in 4D
above.
1. The stationary seat (#125) must be
installed in the motor bracket before the
bracket is installed on the motor. To
install the seat:
a. Place the motor bracket, face up, on
a flat surface.
b. To make the installation of the seat
easier, apply a thin coating of
compatible lubricant to the elas-
tomer portion of the seat prior to
installation.
c. Carefully press the seat, smooth
side up, into the seat cavity of the
motor bracket. Care must be taken
not to damage the seat face.
Thumb pressure is usually sufficient
to install the seat.
2. Install the motor bracket.
a. While holding the motor bracket
with the outlet port facing up, install
two of the thru bolts into the motor
face, to temporarily hold the motor
bracket in place.
b. Slide the bracket back until the feet
are resting against the motor face.
Light tapping may be necessary to
seat the motor bracket in the proper
position.
3. Install the sleeve hub and rotating
element as a unit.
a. Place the sleeve in an upright
position with the smaller end facing
up.
b. Lubricate the motor shaft with a
small amount of glycol based
lubricant.
c. It is generally easier to remove
the entire head or sealing
assembly from the spring and
install it on the motor shaft. This
assembly lifts out of the rotating
element spring.
d. After removal, apply a thin layer
of lubricant to the elastomer
portion of the seal.
e. Holding the head assembly
between the thumb and index
finger with the sealing face
pointing toward the stationary
seat, slide the assembly over the
motor shaft until it rests against
the seat. Refer to Figure 4-14. A
slight twisting motion will allow
the assembly to slide more easily.
Figure 4-14
f. Check to see that the head
assembly is against the seat face.
g. Position the rotating element
spring with the spring holder
resting against the shoulder of the
sleeve hub.
h. Align the keyway slot in the hub
assembly with the key in the
motor shaft, refer to Figure 4-15.
Figure 4-15
i. Slide the hub and spring assem-
bly over the shaft until the hub is
properly seated and the spring is
positioned correctly on the
rotating element head previously
installed. Refer to Figure 4-11
and 4-12.
