9
9. Lubricate the shaft sleeve and coverplate seal cavity with
soapy water (do not use petroleum lubricant). Install a new
insert gasket and a new seal insert with indentation side
down into the cup.
10. Slide a new rotating seal assembly onto the shaft sleeve.
With a screwdriver push on the top of the compression
ring until the seal is tight against the seal insert. Install seal
spring, with narrow end toward seal.
11. Install impeller, impeller washer, lock washer and cap-
screw. Tighten capscrew per torque chart (See Table 1).
12. Install new volute gasket then install pump assembly into
volute. Tighten volute capscrews per torque chart (See
Table 1). Install seal flushing tube, if used. Install support
foot capscrews and tighten per torque chart (See Table 1).
Install coupler and align. Install drain plug, close drain
valve.
13. Install the Hex Coupler Guard as follows:
a. Spread the inner guard and place it over the coupler.
NOTE:
Do not spread the inner and outer guards more
than necessary for guard installation. Over spreading
the guards may alter their fit and appearance.
b. With the inner guard straddling the support bracket,
install a cap screw through the hole in the support
bracket and guard located closest to the pump. Do not
tighten the capscrew.
c. Spread the outer guard and place it over the inner
guard.
d. Install the outer guard cap screws by following the step
stated below which pertains to your particular pump:
I)
For pumps with a motor saddle support bracket:
Ensure the outer guard is straddling the support arm,
and install but do not tighten the two remaining cap
screws.
II)
For pumps without a motor saddle support bracket:
Insert the spacer washer between the holes located
closest to the motor in the outer guard, and install
but do not tighten the two remaining cap screws.
e. Position the outer guard so it is centered around the
shaft, and so there is less than a
1
/
4
" of shaft exposed.
f. Holding the guard in this position, tighten the three cap
screws.
14. Open isolation valves, inspect pump for leaks, if not leak-
ing return pump to service.
1510-S Stuffing Box
With Special Single Mechanical Seal – Figure 10 and 11
5. Remove the impeller capscrew, lock washer and washer.
Remove the impeller.
6. Remove hex nuts from seal cap bolts and remove cover-
plate capscrews. Remove coverplate from bracket.
7. Remove seal assembly. Thoroughly clean and inspect seal
sleeve and seal cap, replace if required.
8. Lubricate shaft sleeve and seal cap with soapy water (do
not use petroleum lubricant). Insert stationary seal with
O-ring into the seal cap and slide onto the shaft. Replace the
seal cap gasket. Slide rotating portion of the seal assembly
onto shaft sleeve and lock in place. For 1
1
/
4
" I.D. seals, the
collar should be 1
13
/
32
" from the impeller end of the shaft
sleeve. For 1
5
/
8
" and 2
3
/
8
" I.D. seals, the distance should be
1
1
/
4
". (See Figure 11).
9. Assemble coverplate to bracket, tighten capscrews per
torque chart (See Table 1). Assemble seal cap to cover-
plate, tighten hex nuts on seal cap bolts per torque chart
(See Table 1).
10. Go to Step 11 of 1510 Standard Mechanical Seal
Instructions.
1510-D Stuffing Box
With Special Double Mechanical Seal – Figure 10 and 12
5. Remove the impeller capscrew, lock washer and washer.
Remove the impeller.
6. Remove hex nuts from seal cap bolts and remove cover-
plate capscrews. Remove coverplate from bracket.
7. Remove seal assembly. Thoroughly clean and inspect
shaft sleeve, seal cap, and coverplate seal cavity, replace if
required.
8. Lubricate shaft sleeve, seal cap and coverplate cavity with
soapy water (do not use petroleum lubricant). Insert one
stationary seal and O-ring into seal cap and the other into
the coverplate.* Slide the seal cap onto the shaft. Replace
seal cap gasket.* Slide rotating portion of seal assembly
onto shaft sleeve.
9. Assemble coverplate to bracket, tighten capscrews per
torque chart (See Table 1). Assemble seal cap to cover-
plate, tighten hex nuts on seal cap bolts per torque chart
(See Table 1).
10. Go to Step 11 of 1510 Standard Mechanical Seal
Instructions.
*For 1
1
/
4
" I.D. Seal both parts will be housed in the coverplate as
shown in Figure 12. Seal cap gasket is not used.
1510-8G
With Standard Mechanical Seal – Figure 13
5. Remove the impeller nut and washer. Remove the impeller
and impeller key.
6. Remove spacer sleeve and two nuts holding the gland to
the stuffing box.
7. Pull the coverplate off the bearing frame assembly. Remove
the seal, sleeve and gland.
8. Thoroughly clean the shaft, shaft sleeve and the coverplate
seal cavity. Inspect for surface damage like pitting, corro-
sion, nicks or scratches.
9. Apply Dow Corning Silicone Rubber #732 or equal to the
shaft at sleeve location. Slide the shaft sleeve onto the
shaft and spin sleeve to distribute sealant. Wipe off excess.
10. Slide the seal gland (flat side towards the stuffing box) on
the shaft.
11. Lubricate the outer surface of the shaft sleeve, interior of
the stuffing box and seal elastomer with soapy water (do
not use petroleum lubricant). Install the stationary element
and rotating assembly of the mechanical seal on the shaft
sleeve; being certain that the two wearing surfaces face
each other and rotating half of the seal is installed closest
to the impeller end.
12. Install the seal spring and spring retainer onto the shaft
sleeve. Slide the coverplate onto the bearing frame.
13. Install spacer sleeve (over the shaft sleeve), impeller key,
impeller, washer and impeller nut, then tighten impeller nut
to 25-30 ft-lbs. Install and tighten the gland nuts evenly
against the stuffing box.
