Hale MG User Manual
Page 73
Muscle Pumps
5-9
1. Installation
INSTALLATION NOTES:
q
Apply a light coat of grease to the gaskets
to hold them in place during assembly. Use
only lithium based grease with 1 to %
molybdenum disulfide. Some examples of
correct greases are: Dow Corning BR2-
PLUS, Lubriplate-Fiske #3000, Shell
Super Duty Grease, Imperial #777, Mobil -
Mobil Grease Special and Sun Oil -
Sunoco MOLY #2EP.
q
Apply a light coat of grease to the seal
rings before assembly.
q
When installing the cap screws make sure
they are locked in place using a suitable
thread locking compound such as Loctite
#242 or equal.
q
If cap screws require replacement they
shall be replaced with grade 5, zinc plated
steel, nylon locking type.
q
Oil and grease will damage the Ethylene-
Propylene (EPT) bellows on the
mechanical seal. Use only Ethylene-Glycol
(anti-freeze) or
soapy water to lubricate
the impeller shaft and bellows during
assembly.
q
Do not touch the sealing face of the carbon
seal ring or seat while handling or
installing the mechanical seal.
a. Clean all oil, dirt, and grease from the
end of the impeller shaft. Make sure
the impe ller shaft is smooth and free
of burrs at the gear key slot and
bearing journals.
OIL AND GREASE WILL DAMAGE THE
ETHYLENE-PROPYLENE (EPT) BELLOWS
ON THE MECHANICAL SEAL. USE ONLY
ETHYLENE-GLYCOL (ANTI-FREEZE) OR
SOAPY WATER TO LUBRICATE THE
IMPELLER SHAFT AND BELLOWS DURING
ASSEMBLY.
DO NOT TOUCH THE SEALING SURFACE OF
THE CARBON SEAL RING OR THE METAL
SEAT WHILE HANDLING OR INSTALLING
THE MECHANICAL SEAL.
IMPORTANT: Always replace the entire
mechanical seal with a complete new Hale
mechanical seal assembly.
b. Lubricate the inside of the mechanical
seal bellows and impeller shaft using
Ethylene-Glycol (anti-freeze) or
soapy water solution.
c. Slide new mechanic al seal bellows
end over the impeller shaft making
sure the spring is oriented towards the
impeller. Using a soft pusher tube (2
inch PVC pipe) and keeping fingers
away from carbon seal ring, carefully
push the mechanical seal assembly
into the mechanical seal housing. If
binding occurs apply more lubricant
to the impeller shaft and bellows.
d. Being careful not to touch the face of
the seat, install the cup and seat into
the mechanical seal cover. Lubricate
the cup and mechanical seal cover
with Ethylene-Glycol or soapy water
solution.
e. Replace the seal rings in the groves on
the mechanical seal cover. Apply a
light coat of grease to the seal rings
being careful not to get grease on the
impeller shaft. Slide the mechanical
seal cover over the impeller shaft
making sure the mechanical seal
remains seated in the bore of the
cover. Make sure there is no oil or
grease on the faces of the mechanical
seal.
f. Screw a 7/16-14UNC stud into one of
the holes in the mechanical seal
housing to aid in bolt hole alignment.