DISASSEMBLY OF COUPLING

Series MD2-B and MD2-C, All Sizes

Canister O-ring

Canister

Bushing

Button Head

Screws

Canister and Casing

Drain Holes

FIGURE 9

Pump, Inner magnet and canister assembly

1.Remove the piping to the ports and remove the capscrews securing the pump to the bracket. Support the pump with an overhead hoist if possible. Use the M10 x 120 capscrew (jackscrew) in the bracket to separate the inner magnet from the outer. (See Figure

Sequence 10).

CAUTION !

Use extreme caution, when pulling the in- ner magnet away from the outer magnet (see Figure 10). Do not place your fingers between the pump mounting flange and the face of the bracket. If you do not completely pull the pump out it will snap back and could pinch a finger or hand. Once the inner magnet is removed from the bracket be careful setting it down as it will

attract any iron or steel object.

2.The canister will contain some liquid, therefore use care while removing from the pump and pull it straight off.

3.Remove the two 6mm buttonhead machine screws and the set collar. Insert a brass bar through a port between two rotor teeth and remove the locknut (See Figure 11). Slide the inner magnet off the shaft. Do not forget this is a very strong magnet. If further pump disassembly is required, refer to Step 7 of PUMP DISASSEMBLY.

4.Do not remove the O-ring unless it is bad, especially if PTFE (derivative) encapsulated. If a new O-ring is required, follow instructions in the ASSEMBLY section on page 10.

5.You should be able to visually inspect the outer magnets from the end of the bracket. If removal is necessary, start by removing the (4) capscrews (See Figure 12) and separate the bracket from the motor or bearing carrier. Loosen the 2 setscrews on the outer shell hub and slide the outer magnet assembly off the shaft. If the unit features a bearing carrier, refer to Page 9 for disassembly of the bearing carrier housing.

 

 

DO NOT PLACE

(4) 12mm Screw

FINGERS HERE

 

M10X120 capscrew

 

DO NOT PLACE

 

 

FINGERS HERE

 

 

M10x120 CAPSCREW

 

 

 

Figure 10

Pump and bracket separation Sequence

Buttonhead

Locknut

Inner Magnet

Screws

 

 

Set Collar

FIGURE 11

Inner Magnet and locknut assembly

Capscrews

Bracket

Motor or

Bearing

Carrier

FIGURE 12

Motor (or Bearing Carrier) and Bracket

SECTION TSM 685.2 ISSUE C

PAGE OF 16

 

 

Page 8
Image 8
Viking 855 Disassembly of Coupling, Pump, Inner magnet and canister assembly, Inner Magnet and locknut assembly

855 specifications

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