Servicing the outlet valve – AIRLESSCO GS800 User Manual

Page 11

Maintenance

3A1186F

Fluid Pump Reinstall

1. Loosen the packing nut and ensure that the piston

rod (10) is in its upper position in the fluid pump
body (9). Slip the sleeve (2) and the retaining ring
(3) over the piston rod (10).

2. Push the piston rod (10) up into the connecting rod

(13) and align the holes. Insert the connecting rod
(13) and align the holes. Insert the connecting rod
pin (1) through the connecting rod (13) and piston.
Slip the sleeve (2) up over the connecting rod pin (1)
and insert the retaining ring (3) into the groove on
the connecting rod.

3. Push the two bolts (8) through the tube spacers (11)

and screw them into the cover assembly (14). Using
a 1/2” wrench, tighten the two bolts (8) evenly (alter-
nating between them) until you reach 20 ft-lbs.

4. Reassemble lower suction valve assembly by plac-

ing the suction seat, O-ring, suction ball and suction
ball guide in the suction nut (7) and screw onto fluid
pump body (9).

5. Reconnect sensor to the fluid pump body (9). Hold

sensor with a 7/8” wrench while tightening the
swivel with a 11/16” wrench.

6. Start the machine and operate slowly to check the

piston rod(10) for binding. Adjust the two bolts (8),
holding the fluid pump body (9) to the cover assem-
bly (14), if necessary. This will eliminate any bind-
ing.

7. Tighten packing nut clockwise until resistance is felt

against the Belleville Springs, go 3/4 of a turn more.
Put five drops of Airlessco Throat Seal Oil in the
packing nut.

8. Run the machine at full pressure for several min-

utes. Release the pressure by following the Pres-
sure Relief Procedure and readjust the packing nut
per step 7 above.

9. Install the connecting rod shield (12) so that the

small hole is in the upper right hand corner.

Servicing the Outlet Valve

1. Disconnect the Fluid Pump, page 10.

2. Place piston holder in a vise. Slide piston into the

holder and lock in place with a 3/8” dowel.

3. Use 1/4” allen wrench to unscrew the outlet seat

retainer from the piston.

4. Remove the outlet seat, O-ring and outlet ball.

5. Inspect outlet ball and seat for wear, replace as nec-

essary. Ensure seat is right side up.

6. While piston is still locked in the holder, install parts

back into the piston in the following order:

•

Ball

•

Outlet Seat

•

O-Ring

NOTE: Before reinstalling the outlet seat support, apply
two drops of Loctite No. 242 (blue) on threads and
torque to 20 ft-lbs.

NOTE: Airlessco LP pump tool kit (188397) is required
for this task. Kit includes: Tightening Bar (865008),
Packing Removal Tool (331465), Piston Holder
(331195), 3/8” dowel (331196).

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