520-222-000
1/04 Rev C
Model S30 Metallic Design Level 1 Page 19
AIR DISTRIBUTION VALVE
WITH STROKE INDICATOR OPTION
SERVICING
To service the air valve first shut off
the compressed air supply, bleed the
pressure from the pump, and disconnect
the air supply line from the pump.
Step #1:
See COMPOSITE REPAIR
PARTS DRAWING.
Using a 5/16" Allen wrench, remove
the four hex socket capscrews (item 12)
and four flat washers (item 38). Remove
the air valve assembly from the pump.
Remove and inspect gasket (item 18)
for cracks or damage. Replace gasket if
needed.
Step #2:
Disassembly of the air valve.
To access the internal air valve
components first remove the two
retaining rings (item 1-H) from each end
of the air valve assembly using clip ring
pliers.
Next remove the two end caps (item
1-E). Inspect the o-ring (items 1-G) and
1-M) for cuts or wear. Replace the
o-rings if necessary.
Remove the two bumpers (item 1-C).
Inspect the bumpers for cut, wear or
abrasion. Replace if necessary.
Remove the spool (part of item 1-A)
from the sleeve. Be careful not to scratch
or damage the outer diameter of the
spool. Wipe spool with a soft cloth and
inspect for scratches or wear.
Inspect the inner diameter of the
sleeve (par t of item 1-A) for dir t,
scratches, or other contaminants.
Remove the sleeve if needed and
replace with a new sleeve and spool set
(item 1-A).
Step #3:
Re-assembly of the air
valve.
Install one bumper (item 1-C) and
one end cap (item 1-E) with o-rings (item
1-G and 1-M) into one end of the air
valve body (item 1-B). Install one
retaining ring (item 1-H), into the groove
on the same end. Insert the safety clip
(item 1-K) through the smaller
unthreaded hole in the endcap.
Remove the new sleeve and spool
set (item 1-A) from the plastic bag.
Carefully remove the spool from the
sleeve. Install the six o-rings (item 1-G)
into the six grooves on the sleeve. Apply
a light coating of grease to the o-rings
before installing the sleeve into the valve
body (item 1-B). Align the slots in the
sleeve with the slots in the valve body.
Insert the spool into the sleeve. Be
careful not to scratch or damage the
spool during installation. Push the spool
in until the pin touches the safety clip
on the opposite end.
Install the remaining bumper, end cap
with o-rings and retaining ring.
Fasten the air valve assembly (item
1) and gasket (item 18) to the pump.
Connect the compressed air line to
the pump. Remove the safety clip. The
pump is now ready for operation.
Read these instructions
completely, before in-
stallation and start-up. It
is the responsibility of
the purchaser to retain
this manual for reference. Failure to
comply with the recommendations stated
in this manual will damage the pump, and
void factory warranty.
IMPORTANT
