OM-07089
S SERIES PUMPS
PAGE E - 27
MAINTENANCE AND REPAIR
Table E-1. Vacuum Test Data
Pump
Model
Seal Cavity
Vacuum
(In. Hg.)
Motor Cavity
Vacuum
(In. Hg.)
Duration
(Minutes)
Duration
(Minutes)
S8D
30
15
20
5
LUBRICATION
Seal Cavity
Check the oil level in the seal cavity before initial
startup, after the first two weeks of operation, and
every month thereafter.
Check the oil level only when the pump
is cool. If the oil level plug is removed
when the pump is hot, pressure in the
seal cavity can cause hot oil to be
ejected as the plug is removed.
To check the seal cavity oil, remove the seal cavity
oil level plug (35) and install a short, 3/8-inch pipe
nipple in the hole. Using a clean container, tip the
pump slightly until oil runs out.
If the oil level is abnormally low, or if the oil contains
water, dirt, or appears cloudy, the lower seal or
gaskets may require replacement. If the oil is clear,
top off the seal cavity by adding oil through the hole
for the fill plug (35) until oil runs out of the oil level
plug hole. Apply `Loctite Pipe Sealant With Teflon
No. 592.' or equivalent to the threads of the pipe
plugs before reinstalling the plugs.
To fill the seal cavity, remove the pipe plug (35) and
add the recommended grade of submersible
pump oil. Apply `Loctite Pipe Sealant With Teflon
No. 592.' or equivalent to the threads of the pipe
plug, before reinstalling the plug.
See Table E-2 for quantity of lubricant when lubri
cating a dry (overhauled) pump. See Table E-3 for
lubricant specifications.
The grade of lubricant used is critical to the opera
tion of this pump. Use premium hydraulic oil as
specified in the following table. Oil must be stored
in a clean, tightly closed container in a reasonably
dry environment.
Table E-2. Oil Quantity
Pump Model
Seal Cavity
Motor Cavity
S8D
13.4 gals. (50,5 liters)
3.6 gals. (13,6 liters)
