SANDPIPER M15 Non-Metallic User Manual
Page 24
m15nmdl3sm-rev0713
Model M15 Non-Metallic Page 22
PILOT VALVE SERVICING
To service the pilot 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 pump assembly
drawing.
Using a 1/2" wrench or socket,
remove the four capscrews (item 9).
Remove the air inlet cap (item 7) and
air inlet gasket (item 21). The pilot valve
assembly (item 2) can now be removed
for inspection and service.
STEP #2: Disassembly of the pilot
valve.
Remove the pilot valve spool (item
4-D). Wipe clean and inspect spool and
o-rings for dirt, cuts or wear. Replace
the o-rings and spool if necessary.
Remove the retaining ring (item
4-F) from the end of the sleeve (item
4-B) and remove the sleeve from the
valve body (item 4-A). Wipe clean and
inspect sleeve and o-rings for dirt, cuts
or wear. Replace the o-rings and sleeve
if necessary.
STEP #3: Re-assembly of the
pilot valve.
Generously lubricate outside
diameter of the sleeve and o-rings.
Then carefully insert sleeve into
valve body. Take CAUTION when
inserting sleeve, not to shear any
o-rings. Install retaining ring to
sleeve. Generously lubricate outside
diameter of spool and o-rings. Then
carefully insert spool into sleeve.
Take CAUTION when inserting
spool, not to shear any o-rings. Use
BP-LS-EP-2 multipurpose grease, or
equivalent.
STEP #4: Re-install the pilot valve
assembly into the intermediate.
Be careful to align the ends of the
pilot valve stem between the plunger
pins when inserting the pilot valve into
the cavity of the intermediate.
Re-install the gasket, air inlet
cap and capscrews. Connect the air
supply to the pump. The pump is now
ready for operation.
Pilot Valve Servicing, Assembly Drawing & Parts List
PILOT VALVE ASSEMBLY PARTS LIST
ITEM PART NUMBER
DESCRIPTION
QTY
4
095-110-558
Pilot Valve Assembly
1
4-A
095-095-558
Valve Body
1
4-B
755-052-000
Sleeve (With O-rings)
1
4-C
560-033-360
O-ring (Sleeve)
6
4-D
775-055-000
Spool (With O-rings)
1
4-E
560-023-360
O-ring (Spool)
3
4-F
675-037-080
Retaining Ring
1