SANDPIPER M1F Non-Metallic - Manual (Page 25)

m1fnmdl3sm-rev0713 Model M1F Non-Metallic Page 23
AIR DISTRIBUTION VALVE WITH
STROKE INDICATOR OPTION
SERVICING
To service the air valve first shut off
the compressed air, bleed the pressure
from the pump, and disconnect the air
supply line from the pump.
Step #1: See Composite Repair and
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 (item
1) from the pump.
Remove and inspect gasket (item
20) 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-K) from each end of the air
valve assembly using clip ring pliers.
Next remove the two end caps (item
1-E). Inspect the o-rings (item 1-G) for
cuts or wear. Replace the o-rings 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 contaminates.
Remove the sleeve if needed and
replace both the sleeve and spool 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 an o-ring
(item 1-G) 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 small unthreaded hole
in the end cap.
Remove the new sleeve an 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-ring, and retaining ring.
Fasten the air valve assembly (item
1) and gasket (item 20) to the pump.
Connect the compressed air line to
the pump. The pump is now ready for
operation.
Read these instructions
completely, before
installation 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