408-32121 Datasheet, PDF (3/4 Pages) TE Connectivity Ltd – Installation of Air Feed Module

408-32121
NOTE
Make sure O-ring lube is applied to the inner
seal groove before the O-ring is installed as
this ensures lubricant will be present in the
seal area through many cycles.
14. Prepare the cleaned piston shaft for O-ring
installation by generously applying O-ring
lubricant to the O-ring groove.
15. Install the O-ring on the shaft.
16. Generously coat the sealing surfaces of the
cleaned piston shaft with O-ring lubricant.
17. Slide the shaft support bushing with new
seals onto the shaft. Refer to Figure 11.
Figure 10
11. Clean all parts to remove any foreign
contaminants as the new seals can easily be
cut with dirt or debris.
12. Inspect the shaft and shaft support bushings
for gouging or scrapes. Replace if gouges or
scrapes are severe as poor sealing surfaces
will greatly reduce seal life. Inspect the
housing bore. If the bore is scraped or
gouged the unit is not re-buildable and
should be replaced with a new assembly.
CAUTION
Any sealing surfaces that are scraped or
gouged must be replaced or significant
reduction in performance and seal life will
result.
13. Install the new O-ring seals in the end caps
after generously applying a quality O-ring
lubricant (Parker O-ring Lubricant 884-4 is
recommended). Refer to Figure 10.
Rev C
Figure 11
18. Prepare the cleaned air feed housing bore
by applying O-ring lubricant.
19. Carefully re-install the piston shaft assembly
by guiding the shaft and shaft support
bushings into the bore. Push the assembly
straight down using a firm and steady
pressure until the assembly stops against
the front retaining ring. See Figure 12.
Figure 12
20. Re-install the set screw to secure the shaft
support bushing. While holding the shaft
assembly against the retaining ring, lightly
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