Stuart Turner 28457, Installation Instructions Manual

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Cont ...

SECTION 1 - MECHANICAL SEAL REPLACEMENT

The parts required to replace the seal are:
 

ITEM  

QTY 

ITEM  

QTY

1 

Woodruff Key 

  1 

6 

Circlip 

  1

2 

Thrower 

  1 

7 

‘O’-ring 

(ID 66.40, c/sec 1.78)

  1

3 

Seal Counterface 

  1 

8 

Screws 

(M6 x 35 mm)

  4

4 

Rotary Seal 

  1 

9 

Seal Applicator Tool 

(not shown)

  1

 5  Washer 

(ID 3/8 "x OD ¾ ")

  1 

• 

PUMP PREPARATION

1.  Turn off and isolate power supply.
2.  Isolate and drain down pump of liquid.
3.  To prepare the pump to accept the service kit parts, each pump part must be removed  

noting its exact position and sequence.

Difficulties may be experienced in the removal of the impeller.  To overcome this, 2   

screwdrivers can be used to prize the impeller from the shaft as shown; ensuring equal  

pressure is applied to each side of the impeller to avoid shaft bending.

4.  Clean all the components not replaced by the service kit.

• 

SEAL IDENTIFICATION

The seal as supplied is shown in order of assembly in Fig. 3.

A  Seal seat complete with rubber cup washer.
B  Rotary seal assembly.
C  Stainless steel washer.
D  Seal retaining clip.

Fig. 2

NOTE:  DO NOT USE EXCESSIVE 
FORCE, AS THIS MAY DAMAGE THE 
COMPONENTS

Fig. 3

A

B

C

D