Repair
4. Push the displacement rod (202) all the way out
the bottom of the cylinder.
Figure 9
5. See Figure 10. Remove one o-ring (208), then
slide out the retaining pin (206) and remove the
other o-ring. Remove the outlet assembly and
ball (207). Remove the o-rings (218) from the
seat (203). Be careful not to mix them up with
the retaining pin o-rings (208). Slide the bearing
(205) and u-cup (204) off the seat (203).
NOTE: If not replacing the u-cup (204), carefully
remove and clean the o-ring, without damaging
the outer or inner lip of the u-cup.
6. Clean and inspect all parts. Replace the parts
as necessary.
Reassemble After Cleaning
Note: Any damaged parts must be replaced.
Note: Lubricate the o-rings, throat packings, and
piston seals with appropriate waterproof sanitary
lubricant.
1. Lubricate and install u-cup (204) and bearing
(205) on the piston seat (203). U-cup lip must
face up. Lubricate and install o-rings (218) on
the seat assembly. Install the ball (207), then the
seat assembly in the outlet housing.
2. Lubricate and install one o-ring (208) in the
groove on the outlet seat pin (206). Push the pin
(206) through the holes. Lubricate and install the
other o-ring (208) in the other groove on the pin.
Check that the o-rings (208) are seated in the
grooves.
NOTE: Be sure to use the smaller o-rings (208)
on the pin (206) and the larger o-rings (218)
on the seat assembly. Stack the o-rings on the
bench if needed to determine size.
Figure 10
3. Lubricate the inside of the cylinder, near the
ends. Then, slide the rod (202) into the cylinder
from the top.
4. Lubricate and install a new u-cup (217) into
the cartridge (215). U-cup lips must face out of
cartridge.
5. Lubricate and install o-ring (216) on the outside
of the cartridge (215).
6. Lift the rod (202) out of the cylinder part way.
Lubricate the rod and slide the cartridge (215)
over the rod, into the cylinder.
7. Lubricate and install o-ring (220) over the rod into
the groove in the top of the cartridge. Then push
the rod back into the cylinder.
16
3A2977K
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