21
Model 8756 Operating Proced ures
Air/Mix Pump Assembly
This Model 8756 uses a single-stage pump. The
purpose of the pump is to transfer specific amount s
of air and mix to the freezing cylinder.
Step 1
Assemble the piston by sliding the check band and
the o-ring into the grooves on the piston. Do not
lubricate the check band or o-ring.
Figure 25
Note: A concave shaped check band indicates an
incorrect assembly. Turn the check band inside out
to correctly expose the flat surface.
Figure 26
Step 2
Slide the small o-ring into the groove in the air
orifice. DO NOT lubricate this o-ring.
Figure 27
Step 3
Check the small hole in the air orifice to insure that it
is not clogged. Place the air orifice into the top of t he
piston.
Figure 28
Step 4
Lightly lubricate the inside of the pump body, top
and bottom.
Figure 29