MINOR REPAIRS
Shaft Seal
It is recommended that all shaft seal parts be replaced. If
parts are to be reused, they must be protected from being
damaged by the shaft during removal.
1.
Remove the large retaining ring (Truarc #7
Retaining Ring Pliers) located on the shaft end of
the unit. Remove side opposite the tangs from the
groove first.
2.
The aluminum housing is removed next. It is held in
place by the friction of the O-ring on its O.D. Pry
the housing toward the end of the shaft until the O-
ring is free.
3.
The bronze sealing ring is also held in place by
internal O-ring friction. Using hand force only, work
this part free and carefully slide it over the shaft.
CAUTION
This part is easily damaged. Use care in
handling.
4.
Each part should be inspected separately if parts
are to be reused. Always replace the three (3) O-
rings.
5.
Prior to assembly, lubricate the small O-ring with
petroleum jelly and insert into the l.D. of the bronze
sealing ring. Insert the other small 0-ring (lubricate)
and insert into the aluminum housing.
6.
Slide the bronze sealing ring over the shaft and onto
the shaft pilot diameter with the O-ring facing the
unit. Work the O-ring into place using hand force
only until it snaps into place.
CAUTION
Protect parts from damage by the shaft.
7.
Insert the stationary seal pilot into the aluminum
housing, locating the notch in the stationary seal
over the pin in the housing. Lubricate the large O-
ring and place on the housing. The stationary seal
should have a slight spring load due to the springs in
the housing. Make certain all six (6) springs are in
place in the aluminum housing before sliding it into
position.
8.
Slide the aluminum housing into place against the
bronze sealing ring using hand force only.
9.
Compress the aluminum housing to expose the
retaining ring groove. Install the retaining ring, with
the beveled side out, putting the side opposite the
tangs into the groove first. Be certain that the
retaining
ring
has
snapped
into
its
groove
completely.
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