SANDPIPER U1F - Manual (Page 17)

u1fmdl1sm-rev0614 Model U1F UL79 Listed Metallic Design Level 1 Page 15
AIR DISTRIBUTION VALVE
SERVICING
To service the air valve first shut
off the compressed air, bleed pressure
from the pump, and disconnect the air
supply line from the pump.
STEP #1: See COMPOSITE
REPAIR PARTS DRAWING.
Using a 9/16" wrench or socket,
remove the four hex head capscrews
(item 10). Remove the air valve
assembly from the pump.
Remove and inspect gasket (item
16) for cracks or damage. Replace
gasket if needed.
STEP #2: Disassembly of the air
valve.
Using a 7/16" wrench or socket,
remove the eight hex caprscrews (item
1-F) that fasten the end caps to the
valve body.
Next remove the two end caps
(items 1-E). Inspect two o-rings (items
1-D) on each end cap for damage or
wear. Replace the o-rings as needed.
Remove the bumpers (items 1-C).
Inspect the bumpers for damage or
wear.
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 two o-rings
(item 1-D) and fasten with four hex
capscrews (items (1-F) to the valve
body (items 1-A).
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 it touches the bumper on
the opposite end.
Install the remaining bumper, end
cap (with o-rings), and fasten with the
remaining hex capscrews.
Fasten the air valve assembly (item
1) and gasket (item 16) 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