SANDPIPER M15 Metallic - Manual (Page 20)

m15mdl1sm-rev0713 Model M15 Metallic Page 18
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 36). 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 (part of item 1-A) for dirt,
scratches, or other contaminants.
Remove the sleeve if needed and replace
with a new sleeve and spool set (item
1-A).
Step #3: Reassembly 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
i n s t a l l a t i o n a n d
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