V1.4
9 of 22 04/01/2009
WARNING!
Failure to follow these instructions could result in serious bodily injury or death.
Do not attempt to work on any Tuthill pump installation before completing the steps below.
Disconnect the drive so that it cannot be started while work is being performed.
Review the Material Safety Data Sheet (MSDS) applicable to the liquid being pumped to
determine its characteristics and the precautions necessary to ensure safe handling.
Vent all pressure within the pump through the suction or discharge lines.
All Tuthill pumps contain residual 200 SSU lube oil from the factory production test. Determine
if this is compatible with the fluid you are pumping. If the fluid is incompatible, consult the
factory.
Service - Specific Models
Model
AC
Lubrication
Model AC 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 #930 AAA, 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 opposite side of the housing in a vise
with the shaft end up.
•
Remove the lock wire and packing gland screws.
•
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.
•
Slide the packing gland off the shaft.
•
Remove the old packing from the bracket.
•
Inspect the shaft. If the shaft is too badly worn or scored at the packing area,
the rotor must be replaced.
