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Disassembly / assembly of bearing carrier, Disassembly, Assembly – Viking MAG DRIVE 855 User Manual

Page 9: Bearing carrier for md2-b couplings disassembly, Bearing carrier for md2-c couplings

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SECTION TSM

685.2

ISSUE

C

PAGE 9 OF 16

DISASSEMBLY / ASSEMBLY Of BEARING CARRIER

DISASSEMBLY

The bearing carrier for an MD2 B coupling features two

sealed ball bearings along with the outer magnet assembly. If

further disassembly of this unit is required, reference

figure

7 on page 6 and figure 13 then proceed as follows:

1. Remove the internal retaining ring. Using a press, press

the shaft out of the housing.

2. Remove the external retaining rings from shaft. Place

the unit into the press and push out shaft out of the

bearings.

ASSEMBLY

1. Place some Loctite® on the O.D. of the first bearing and

press into the housing bore. Position the bearing spacer

in the bore and insert the second bearing. Center the

bearing spacer then press in the shaft with one external

retaining ring on shaft. Press down until the ring contacts

the bearing race, then install the second ring. Install the

internal retaining ring into the bearing housing.

2. Slide the outer magnet assembly onto the pump shaft.

Locate the outer magnet per dimension “A” listed below

then tighten the two setscrews.

fIGURE 13

MD2-B OUTER MAGNET, BOLT ON HUB

AND BEARING CARRIER

Bearing Carrier

Housing

Ball Bearings

External

Retaining Rings

Spacer

Internal

Retaining Ring

Set Screw

Outer Magnet

Bearing Carrier for MD2-B Couplings

DISASSEMBLY

The bearing carrier for the MD2 C coupling features two

tapered roller bearings secured by a threaded end cap. The

unit is greased externally using the grease fitting. If further

disassembly is required, reference

figure 8 on page 7 and

figure 14, then proceed as follows:

1. Remove the two setscrews from the bolt-on hub and slide

the outer magnet off of the shaft. Remove the outboard

drive key in shaft.

2. Place the inboard side of the shaft in a vise with padded

jaws. Bend the lockwasher tab up and gently tap the

locknut in a counterclockwise direction. Remove the

locknut and lockwasher.

3. Loosen the two setscrews retaining the end cap. Back

out the end cap completely. Pull or gently tap the shaft

out the back of the bearing housing. Be sure to keep

the cup and cone of the outer bearing together. If either

the cup or cone requires replacing, it is recommended to

replace as a set. The inner cone will probably stay in the

housing unless it is to be replaced.

4. One lip seal is pressed into the end cap and the other is

pressed into the bearing housing. Do not remove the

lipseals unless they require replacement. If removed,

pay close attention to the orientation as shown in

figure 14 when installing the new lip seals.

Bearing Carrier for MD2-C Couplings

fIGURE 14

MD2-C OUTER MAGNET, BOLT ON HUB

AND BEARING CARRIER

Bolt-on

Hub

Loctite® is a trademark of Henkel Consumer Adhesives, Inc.

Pump Design

“A” Dim.

U.S. Inch Design

8.49 inches

Metric Design

196.4 mm

“B” Coupling Outer Magnet

Location Dimension*

*Dimensions are not the same between designs

“A”

Tapered

Roller

Bearing,

(Outer)

Lockwasher

and Locknut

Retaining

End Cap and

Setscrew

Lipseal

Set

Screw

Inner Key

Outer

Magnet

Bolt-on

Hub

Spacer

Bearing Carrier

Housing

Tapered Roller

Bearing, (Inner)

“A”