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Note: Check everything in the Troubleshooting Chart before disassembling the sprayer.
FLUID PUMP DISCONNECT
1.
Flush out the material you are spraying, if possible.
2.
Follow the Pressure Relief Procedure on Page 6. Stop the pump in the middle of down stroke.
3.
Remove the suction tube and fluid hose (if so equipped) from the fluid pump.
4.
Remove 2 retaining rings and slip the sleeve of the coupling 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 off the tie rods.
FLUID PUMP REINSTALL
1.
Loosen the packing nut and extend piston rod to fully up position. Slip sleeve (189-047)
over the piston rod.
2.
Make sure that spacer tubes (301-048) are in place.
3.
Connect connecting rod with fluid pump by installing coupling halfs (189-046). Slide sleeve over
coupling halfs. Secure with retaining ring (189-048).
4.
Secure the fluid pump housing to the tie rods (100-328) and screw locknuts with washers on loosely.
5.
Tighten the tie rod locknuts evenly to 30 ft. lb.
NOTE: After all the rod locknuts are tight, the alignment of both rods should allow easy assembly and disassem-
bly of the coupling. If any binding, loosen and retighten all the rod locknuts to improve the alignment. Misalign-
ment causes premature wear of seal and packings.
6.
Tighten the packing nut clockwise until resistance against the packings can be felt. Turn it 1 full turn
more. Approximately 4-5 threads of the packing nut should show.
7.
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.
8.
Prime the unit and run at maximum pressure for several minutes, then release the pressure and repeat
step 6.
9.
Fill the wet cup (packing nut) about 1/3 full of TSO (Throat Seal Oil)
SERVICING FLUID PUMP
