WARNING: Failure to shut off gate valve to isolate Hydrant from main water source can result in serious bodily injury.
Follow instructions at the bottom of page 1 before attempting any repairs.
MUELLER
®
Improved Fire Hydrant
Replacing Traffic Flange and Brass Stem Coupling (All Models Prior to 1962)
4.
Turn Stem Coupling and Upper Stem
so that slot in Stem Coupling aligns
with the tongue and groove of Stems.
Hold Upper Stem in alignment and
screw Stem Coupling upward until
tongue and groove of Stems firmly lock
together. Tighten with wrench. With
Stem Coupling in place, slide Sleeve
downward so that lower end of Sleeve
surrounds upper end of Stem Coupling.
Be sure Sleeve projections fit into Stem
Coupling slots. With Sleeve in place,
tighten set screw in Sleeve.
Remove Bonnet Assembly, Stuffing Box,
and Stem from Upper Barrel. Before
removing Stem from Stuffing Box,
lubricate Brass Sleeve and slide Sleeve
over the threaded area of the Stem to
prevent damage to the O-rings.
Remove damaged Coupling and
Sleeve. Screw new Stem Coupling
onto Lower Stem down against
shoulder. Slip Sleeve over lower end of
Upper Stem.
Note: If Upper Stem of Hydrant
is 1
1
/
4
” In diameter, cut sleeve as
Indicated by lettering on sleeve.
Screw Upper Stem into Stem Coupling
until it contacts the Lower Stem.
5.
Place Flange Gasket on exposed
Flange of Lower Barrel. Place Upper
Barrel carefully in position on Lower
Barrel. Be sure that it is concentric
with Lower Barrel and the gasket is
centered. Bolt the two halves of Traffic
Flange into place with bevel on outer
edge downward and with Traffic Flange
snugly fitting around Lower Barrel.
1.
MUELLER Improved Hydrant with
Upper Barrel knocked over by truck.
Note broken pieces of Traffic Flange
lying on ground.
3.
2
EqUIPMENT & TOOLS NEEdEd – PPE: Hard hat, safety shoes, safety vest, safety glasses, work gloves.
Tools: Wrench, A-311 Operating Wrench, A-366 Brass Sleeve, MUELLER Hydrant Lubricant.
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3
2.
