16
17
Note: Check everything in the Troubleshooting Chart before disassembling the sprayer.
FLUID PUMP DISCONNECT
Refer to Fig. 30
1.
Flush out the material you are spraying, if possible.
2.
Follow the Pressure Relief Procedure on Page 10. Stop the pump in the middle of down stroke.
3
. Remove the suction assembly, fluid hose and gun hose from the fluid pump.
4
. Remove 2 retaining rings and slip the coupling assembly cover down and remove both coupling
halfs. This will disconnect fluid pump from the connecting rod.
5
. Unscrew the two tie rod locknuts.
6
. Pull the pump down off the tie rods.
FLUID PUMP REINSTALL
Refer to Fig. 30
1
. Loosen the packing nut and raise the piston to align and touch the rod end of the connecting rod.
See Fig. 13
2
. Insert one of the retaining rings through two holes of the packing nut. See Fig. 14
3.
Lower the fluid pump and place the coupling assembly cover over the piston and resting on the
retaining ring. See Fig. 15
4.
Ensure that the spacer tubes are in place over the studs.
5
. Raise up the fluid pump so it is aligned and touching the rod end again. Place the two coupling
halves over the piston/rod end, slide up the coupling assembly cover over the coupling halves and
insert the second retaining ring into the lower groove of the coupling halves. See Fig. 16
6.
Remove the first retaining ring from the packing nut and place in the upper groove of the coulping
halves. Fig. 17
7.
Attach the two lock washers and nuts on the studs and tighten to 30 ft-lbs.
8.
Reconnect the suction assembly, fluid hose and gun hose to the fluid pump.
9.
Tighten the packing nut until there is resistance, then 1 full revolution tighter. Approximently 4
threads will show with new packings installed. Fill the wet cup of the packing nut 1/3 full with Throat
Seal Oil (TSO).
10.
Start the pump slowly to check for binding, then run at maximum pressure for several minutes.
11.
Relieve pressure and repeat step 8.
SERVICING FLUID PUMP
FIG. 13
FIG. 17
FIG. 16
FIG. 15
FIG. 14
1
2
3
