Service – Specific Models
Model C2G
Lubrication:
Model C2G pumps are provided with a grease cup or grease gun fitting at the outer
bearing which also lubricates the packing. A good grade of medium cup grease, such as Fiske
Bros. Lubriplate #907, should be used. Apply until visible at the outer end of the packing gland.
If the pump is overheating, it may be due to lack of lubricant. Add lubricant as needed or at least
every 60 days or 500 hours of operation.
Repacking:
•
Grip the pump firmly across the ports and secure the housing in a vise with the shaft
end up.
•
Inspect the shaft at the flat and keyway area. Any burrs will interfere with removal of
the packing gland. Use a small, fine file if necessary.
•
Remove the two packing gland screws at the shaft end and slide the packing gland
assembly off the shaft.
•
Remove the old packing, packing retainer and spring.
•
Inspect the shaft. If badly scored, the rotor must be replaced.
•
Clean the packing chamber thoroughly. Carefully remove any sharp ridges from the
shaft end. This will eliminate possible damage to the lips of the packing and ease
installation.
•
Replace the spring and packing retainer. Be certain that the spring is properly located
on the packing retainer and that the beveled surface of the packing retainer is facing
the shaft end of the pump.
•
Install the V type packing rings. Rings should be installed separately and not in sets.
Three rings are required per pump. Exercise care when sliding the rings into place so
that the lips of the packing rings are stacked in line and positioned on the beveled
surface of the packing retainer ring.
•
Replace the packing gland assembly and fasten it securely to the bracket assembly
with the packing gland screws. The tension of the spring is such that normal wear on
the packing is taken up automatically.
Models C2E, C2EN, C2F, and C2FA
Seal Replacement - Models C2E, C2EN and C2F:
•
Grip the pump firmly across the ports and secure the housing in a vise with the shaft
end up.
•
For model C2EN only:
Loosen the setscrew on the collar of the outboard ball bearing.
While holding the pump shaft steady, turn the collar to loosen it. Remove the collar from
the shaft.
•
Remove the gland cap screws and slide the seal gland off the shaft.
•
Pry the seal from the housing cap and clean out the seal cavity with a cloth. Press the
new seal into the housing cap with the lip spring side facing the mounting face.
•
Inspect the shaft. If badly scored at the seal area, the rotor must be replaced. Carefully
remove any sharp edges from the shaft and polish with crocus cloth or very fine
sandpaper. This will eliminate possible damage to the seal lip and ease installation.
•
Install new O-ring into bracket if necessary.
•
Apply a dab of petroleum jelly to the seal lip and install it over the shaft. (If the seal is
EPR, apply a silicon-based lubricant). The seal lip must retain its position on the shaft.
Work the seal gland up and down the shaft to make certain the seal lip slides freely.
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