Viking Pump TSM845.1: LQ-QS 825, 823, 827 - Manual (Page 8)

SECTION TSM 845 1 ISSUE E PAGE 8 OF 13
fIGURE 11
fIGURE 12
fIGURE 13
fIGURE 14
7. Insert a brass bar through a port between two rotor teeth
and loosen the capscrew holding the inner magnet onto
the shaft See figure 13 The 0 437” capscrew has right
hand threads therefore turn it counterclockwise THE
INNER MAGNET HAS A VERY STRONG MAGNETIC
FIELD AND IS MOST DANGEROUS IN THE UN-
ASSEMBLED CONDITION. THE MAGNET IS QUITE
HEAVY AND WILL BE DRAWN TO ANY FERROUS
OBJECT OR SURFACE CAUSING POTENTIAL
PINCHING. BEWARE OF THE CAUTIONS LISTED
ON (PAGE 3). USE EXTREME CARE SLIDING THE
MAGNET OFF OF THE PUMP SHAFT. SET THE
MAGNET DOWN ON EITHER END AWAY FROM ALL
OTHER OBJECTS See figure 14 Remove the key
and the external snap ring (LQ & LS) and then finish
disassembly of the pump
BEARING HOUSING
DISASSEMBLY Of BEARING HOUSING
The bearing housing features two grease packed tapered
roller bearings (TRB) along with a one-piece outer magnet
assembly with shaft The unit may be greased externally
using the grease fitting See figure 15 if further assembly is
required and proceed as follows:
1. Cover the open end of the outer magnet with a piece of
sheet metal This will keep foreign material out of magnet
area and protect the magnets Set the assembly face
down with the shaft pointing up and remove jackscrews
2. Bend the lockwasher tab up and gently tap the locknut in
a counterclockwise direction with a punch until loose (If
this does not work, place a key into shaft of outer magnet
Use 1 875” wrench to hold outer magnet and a spanner
wrench to loosen lock nut Remove the locknut and
lockwasher Then lift the bearing carrier off the shaft of
the outer magnet assembly
3. Back out the (2) setscrews holding the bearing cap then
remove the bearing cap with a spanner wrench The
inner and outer spacers, outer TRB and inner TRB cone
should all slide out of the bearing housing
4. One lip seal is pressed into the bearing cap and the other
is pressed into the bearing housing Do not remove
unless replacing
5. If inner TRB is worn or damaged, remove cup of inner
TRB
ASSEMBLY Of BEARING HOUSING
Depending on the condition of the bearings either replace or
recondition existing bearings by cleaning and packing with a
heavy duty grease Replace the lip seals if necessary
1. Place the bearing carrier down with the cast surface
up Install the inner lip seal (if removed) Then install
the cup (if removed) of the inner TRB and the cone into
the bearing housing bore Insert the inner bearing spacer
(longer one of the two) and the outer TRB into the bore
Place outer spacer on top of the cone of the outer TRB
2. The outer end cap houses the second lip seal If the
seal is in good condition, slide the endcap over the outer
spacer then thread into bearing housing Center the inner
spacer so the shaft will slide through the two bearings
Thread in the end cap until it makes contact with the outer
5. There will probably be some liquid left in the canister so
take the necessary safety precautions The canister drain
is located behind the mounting flange and near the
underside Removing plug will drain most of the canister
Once the liquid has drained, replace the plugs
6. Remove the (8) 0 375” Allen head capscrews holding the
canister in place then slide the canister off See figure 12