Daily Maintenance; Servicing The Fluid Pump - AIRLESSCO 3A1186A Operation - Repair - Parts

Maintenance
Maintenance

Daily Maintenance

Keep displacement pump packing nut/wet cup lubri-
cated with Airlessco Throat Seal Oil at all times. The
TSO helps protect the packings and rod. Inspect the
packing nut daily. If seepage of paint into the packing nut
and/or movement of the piston upward is found (while
not spraying), the packing nut should be tightened just
enough to stop leakage. Overtightening will damage the
packings and reduce the packing life.

Servicing the Fluid Pump

Fluid Pump Disconnect
1. Relieve Pressure, page 6.
2. Flush the material you are spraying out of the
machine.
3. Remove the connecting rod shield (12).
4. Move the piston rod (10) to its lowest position by
cycling pump slowly.
5. Turn off the motor.
6. Disconnect sensor by holding it in place with a 7/8"
wrench and unscrewing the swivel (6) with a 11/16"
wrench.
7. Remove the retaining ring (3) from the connecting
rod (13) and slide the sleeve (2) down revealing the
connecting rod pin (1).
8. Remove the suction tube assembly from the fluid
pump (9) by unscrewing the suction nut (7) with the
packing adjustment tool. (189211)
9. Using a 1/2" wrench unscrew the two bolts (8) from
the cover assembly (14). The fluid pump (9) will be
hanging loosely at this point.
10
10. Remove the connecting rod pin (1) out of the con-
necting rod, allowing the removal of the fluid pump
(9) from the machine.
14
13
12
11
10
9
8
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.
2
1
3
5, 6
7
ti16053a
3A1186A