Ampco Pumps Company LF 401, Instruction & Maintenance Manual

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20
PUMP ASSEMBLY AND SEAL INSTALLATION
When replacing the seal assembly lubricate all o-rings with food grade lu-
bricant to ease assembly. Once the pump is fully assembled turn the stub shaft a
few revolutions by hand making sure it turn relatively freely and nothing is rub-
bing inside the pump. Running the pump with foreign objects in the pump or hav-
ing the impeller making contact with either the cover or the casing will result in
serious damage if not completely destroying the pump. For assembling pumps
with single seals, start at step number 4.
TOOLS REQUIRED FOR ASSEMBLY AND SEAL INSTALLATION:
1-1/4” socket wrench Torque wrench
3/8” round bar 7/16” wrench
1. Slide the rotating double spring onto
the stub shaft and use the slot to maneu-
ver the spring behind both rotating drive
pins. There are two seal springs in the
double seal kit. The rotating double seal
spring is the heavier spring.
2. Slide the rotating seal over the shaft
through the casing.
3. Set the slots in the rotating seal over
the drive pins figure 11.
Figure 9
Figure 10
LF & LM SERIES PUMPS
Figure 11