Servicing the inlet and outlet valves, Disassembly of the outlet valve, Servicing the outlet valve – AIRLESSCO GS6250 User Manual
Page 13
Maintenance
3A1187E
13
8.
Start the pump and operate it slowly (at low engine
speed) to check the piston rod for binding. Adjust tie
rod lock nuts if necessary to eliminate binding.
9.
Prime the unit and run at maximum pressure for
several minutes, then release the pressure and
repeat step 7.
10. Fill the wet cup (packing nut) with five drops of TSO
(Throat Seal Oil).
Servicing the Inlet and Outlet
Valves
Disassembly of the Outlet Valve
1.
Using the rod collar tool (189211), screw the suction
nut (7), containing intake seat support, off of the
fluid body.
2.
Remove the inlet seat (4), O-ring, inlet ball (3) and
inlet retainer (2) with O-ring.
3.
Clean all parts and inspect them for wear and dam-
age, replacing parts as needed. Old O-rings should
be replaced with new ones.
NOTE: Inlet Seat (867574) is reversible.
4.
Clean inside of fluid body.
5.
Reassemble the valve and screw it onto the fluid
body if no further service is needed.
Servicing the Outlet Valve
1.
Complete all steps of the Fluid Pump Disconnect,
page 11.
2.
Screw the suction nut off the pump and remove inlet
valve assembly.
3.
Using the rod collar tool, loosen the packing nut and
push the piston (13) down and out of the fluid body.
4.
Place piston holder (866058) in a vise. Slide piston
(13) into holder and lock in place with a 1/4” pin
(867166).
5.
Clean all parts and inspect them carefully for wear
or damage. Inspect the outside of the piston rod for
scoring or wear. Replace these parts if needed. A
worn piston rod will cause premature wear of pack-
ings.
6.
Using 3/8” allen wrench to unscrew retainer (8) from
piston (13).
7.
Remove outlet seat (9), O-ring, outlet ball (11) and
outlet retainer (12).
8.
Inspect outlet ball (11) and seat for wear. Replace
as required.
NOTE: Outlet Seat (867575) is reversible.
9.
Install parts back into piston rod. Place two drops of
loctite No. 242 (blue) on threads of the retainer (8)
before assembling and torque to 20 ft-lbs.
1
2
3
4
5
6
7
ti15999a
8
9
10
11
12
13
ti16000a
867166
866058