Servicing The Fluid Pump; Fluid Pump - AIRLESSCO HSS 9000 Manual

SERVICING THE FLUID PUMP

FLUID PUMP REMOVAL
REFER TO FIGURE 11
1. Follow the PRESSURE RELIEF PROCEDURE page 9.
2. Flush the material you are spraying out of the machine.
3. Remove the Front Cover.
4. Slip Retaining Ring down to expose the Piston Pin.
5. Push Piston Pin out of the piston pinhole.
6. Loosen Jam Nut until the Fluid Pump can unthread from
the Yoke.
FIG. 11
6
5
4
PARTS LIST FIGURE 11
Item No. Part No.
1 186-100
2 119-099
3 119-025
4 187-088
5 116-106
6 186-078
14
Description
Hydraulic Motor
Front Cover
Piston Pin
Jam Nut
Retaining Clamp
Yoke
DISASSEMBLY OF THE FLUID PUMP
REFER TO FIGURE 14
1. Remove Fluid Pump from machine.
2. Remove Inlet Valve Assembly - Refer to Servicing Inlet
Valve, Page 15.
3. Remove Upper Packing Adjustment nut from Outlet
Housing.
4. Remove Pump Cylinder from Extension Tube, pulling
Displacement Rod out through bottom of Outlet Housing.
Discard O-ring.
5. Remove Outlet Housing from Extension Tube. Discard
O-ring.
6. Remove all old packings and glands from Outlet
Housing; retain Male Gland and Female Gland, they will
be re-used unless damaged.
1
7. Remove Piston End from Rod Extension.
8. Remove Jam Nuts from Piston End. Remove all old
packings, glands and Scraper from Piston End; retain
Male Gland and Female Gland, they will be
re-used unless damaged.
9. Disassemble Outlet Valve - Refer to Servicing Outlet
Valve, Page 15.
2
10. Inspect Displacement Rod and Cylinder inside surface
for wear or damage; thoroughly clean all parts to be
reused.
FLUID PUMP REINSTALLATION
3
REFER TO FIGURE 11
1. With the Retaining Ring loosely in place around the
pump piston, thread the Fluid Pump in to the Yoke until
the top edge of the Outlet Housing is one thread above
the inside edge of the Yoke threaded bore.
2. Tighten the Jam Nut until it stops against the bottom
edge of the Yoke.
3. Line up the Displacement Rod pin hole with the
Hydraulic Piston pin hole; insert the Piston Pin.
4. Slip the Retaining Ring up around the piston pin bore on
the Hydraulic Piston.
5. Run the machine at full pressure for several minute
and check for leaks. Release the pressure by following
the PRESSURE RELIEF PROCEDURE & readjust
the packing nut per step 7 in the Packing Replacement
Procedures on page 16.
6. Reinstall Front Cover