ITT SSV User Manual

17. With an adequately sized crane, carefully lower

the motor onto the motor adapter, lining up the

electrical conduit connection and the 4 motor

adapter bolt holes, as required.

18. Install the 4 motor hex cap screws, torquing to the

value provided in the “ENGINEERING DATA”

section of this manual.

19. Place the coupling drive pin into the pump shaft

and install the coupling halves onto the motor and

pump shafts. Install the 4 coupling socket head

screws, lock washers and nuts, DO NOT tighten.

20. Position the motor assembly shim between the

coupling and the motor adapter. If the motor

assembly shim is not available, a 0.03" (5 mm)

shim may be used to locate the pump shaft assem-

bly and to set the correct height.

21. Tighten the 4 coupling socket head screws,

torquing screws to values provided in the “ENGI-

NEERING DATA” section of this manual. Tighten

evenly so that the gap between the halves is equal

side to side and top to bottom.

22. Install the coupling guard halves.

1. Close all necessary suction and discharge valves to

isolate the pump from the system.

2. Drain the liquid from the pump by removing the

drain plug and opening the needle valve on the

vent plug.

3. Remove the coupling guards, the 4 coupling hex

cap screws, the coupling and coupling drive pin.

See steps 1-3.

4. Remove the 4 motor hex cap screws (inner

screws) on the seal housing. See step 4.

5. Remove the seal housing plate using the two

tapped holes provided. Threading of the hex

cap screws into these holes and evenly tighten-

ing the screws. Lift and remove the seal housing

between the pump and motor shaft. Exercise care

when sliding the seal housing between the shaft to

prevent damage to the stationary seat. See step 5.

6. Turn the seal housing upside down and remove

the stationary seat and o-ring. Remove and dis-

card the large o-ring used to seal the seal housing

to the pump head. Inspect the seal seat for any

burrs or debris. Make sure that the seat is clean.

Lubricate the new o-ring for the seal seat with a

adequately sized crane, carefully remove the mo-

tor. DO NOT rest the motor on the motor shaft.

5. Remove the 4 tie rod nuts and lock washers.
6. Carefully remove the motor adapter by sliding it

up the pump shaft. Larger units may require an

adequately sized crane to lift the motor adapter.

DO NOT damage the shaft.

NOTICE: EDGES OF THE STAINLESS STEEL PARTS

ARE SHARP. WEAR APPROPRIATE PRO-

TECTIVE CLOTHING.

7. To gain access to the mechanical seal, it is neces-

sary to remove the stainless steel upper plate

which is held in place by an O-ring located under

the plate rim. Place a small block of wood against

the underside of the rim and, while moving

around the rim, tap with a mallet against the block

until the upper plate loosens. Remove the upper

plate and O-ring from the pump casing. Discard

the O-ring.

8. Remove the stationary element from the upper

plate. With a clean cloth, wipe the upper plate

bore clean and inspect for damage. Replace the

upper plate, as required.

9. Remove the top (vented) stainless steel inner cas-

ing. Grasp the pump shaft, below the mechanical

seal, and move it sharply back and forth to free

the first stage from the lower pump body. Remove

the entire stack assembly from the pump external

sleeve.

10. Slide the mechanical seal rotary element, spring

and washer from the pump shaft. Discard the

entire mechanical seal assembly.

11. Lubricate the inside of the new mechanical seal as-

sembly with a quality grade of O-ring lubricant.

12. To install a new mechanical seal rotary assembly,

slide the assembly onto the pump shaft, spring end

first. Be sure the top spring tip is in the hole of the

rotary portion of the seal. DO NOT scratch or

otherwise damage the seal face. With a clean, lint

free cloth, wipe the seal face clean of all lubricant

or debris.

13. Lubricate the outside of the new mechanical seal

stationary element with a quality grade of O-ring

lubricant.

14. Insert the stationary seat into the seal housing

with the seal face out. DO NOT scratch or other-

wise damage the seal face. Insure that the station-

ary seat is fully seated into the seal housing. With

a clean, lint free cloth, wipe the seal face clean of

all lubricant or debris.

15. With a new O-ring, install the seal housing onto

the pump shaft, seating the plate fully and square-

ly onto the pump outer shell.

16. Place the motor adapter over the 4 tie rod bolts,

using an adequately sized crane when required,

and install the 4 lock washers and tie rod nuts.

Torque the nuts, in sequence, to the value pro-

vided in the “ENGINEERING DATA” section of

this manual.

MECHANICAL SEAL OPTIONS

Code

Rotary

Stationary

Elastomers

No.

Carbon

Viton

Mechanical

EPR

Seal

Silicon

Viton

Carbide

EPR

Cartridge

Carbide

Viton

Seal

Sil/Carbide

Aflas

Metal parts on all seals are 316SS. When reordering units with previous seal op-

tions 2, 3 or 5 review application and order new seal option from above chart.