Service
306817N
11
Service
General
. 2. Check the air line lubricator often and keep it
filled with oil. Also check the pump packing nut regularly
to keep it just tight enough to stop leakage, but no
tighter. Use a 1/4 in. (6.3 mm) diameter rod to tighten.
Proper packing nut take-up will stop leakage. However,
all the packings should be replaced after 1000 hours of
operation or delivery of 120,000 gallons of solution at 2
gpm. Use Repair Kit 206923.
Accumulator Repair
NOTE: Before disassembling the accumulator (7),
check the air valve for leakage. Remove the air valve
cap and recharge the air chamber to 0.58–1.36 MPa
(5.78–13.6 bar, 85–200 psi). Wet the valve stem with
saliva and watch for bubbling, indicating leakage. If
leakage it detected, replace the valve core—release the
air pressure first by depressing the valve core plunger
pin.
1.
Shut off the air supply to the pump and relieve the
pressure. Release air pressure in the accumulator
by depressing the valve core plunger pin.
Disconnect the spray hose and remove the
accumulator from the pump.
2.
Screw the inlet adapter out of the housing and
remove the o-ring, poppet, and spring. Screw the
housing off of the cylinder. Take the piston out and
remove the bearings and seal. Clean all parts and
inspect for wear and damage, replacing as
necessary. Check the piston and cylinder wall for
pitting or scoring. Check the valve seat in the inlet
adapter for wear or damage.
3.
Lubricate the piston seal, and reassemble the
accumulator. Remount the accumulator on the
pump and reconnect the spray hose. Charge the
accumulator to 0.58–1.36 MPa (5.78–13.6 bar, 85–
200 psi). Start the pump and check for air or liquid
leaks.
Accessories
Stainless Steel Spray Tips
WARNING
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the
Pressure Relief Procedure, page 8.
Tip No.
Color
Orifice Size
Spray Angle
805584
Yellow
0.071
15°
805538
White
0.043
40°
805549
Green
0.050
25°
