Ampco Pumps Company LF 401, Instruction & Maintenance Manual

Page: 21 / 36

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4. Note the square end of the station-
ary seal. Insert this end in first and
slide the stationary seal over the shaft
and into the casing, figure 12.
5. Line up a flat on the stationary seal
to the a flat of the window of the cas-
ing and gently press the stationary seal
into the casing bore. See figure 13.
6. Assemble the rotating half of the
seal. The order of assembly can be
seen in figure 14. Insert the single seal
spring into the seal driver. The single
seal spring is smaller than the rotating
double spring. Next insert the backup
ring. The backup ring may need to be
pushed in. Insert the single rotating
seal o-ring then insert the single rotat-
ing seal. Be sure to line up the slots in
the rotating seal with the pins in the
seal driver.
7. Install inner seal driver o-ring, then
slide the rotating seal assembly onto
the stub shaft, as seen in figure 15,
against the stationary seal. Be sure the
outer seal driver o-ring is in the o-ring
groove of the seal driver.
Figure 12
Figure 13
Figure 12
Figure 14
Figure 15
LF & LM SERIES PUMPS