GREASE THE CYLINDERS
Each cylinder is equipped with a grease cup to prevent premature plunger
and packing wear. Each cup must be filled with grease on the initial starting
of the sprayer unit and filled weekly if necessary.
PUMP REPAIR
TO REPLACE PUMP PISTON PACKING
1. Unscrew the nuts located underneath the cylinder (ref # 49) and remove
the discharge metal/manifold (item #71).
2. Unscrew the bolts (ref # 62) and remove the suction metal/manifold (ref
# 60).
3. Unscrew the nuts (ref # 52) that hold the cylinder (ref # 49) on, and then
the cylinder (ref # 49) should slide off the pistons.
NOTE: The cylinder (item #49) may require tapping with a non-metallic
object to remove. The piston packing is inside the housing.
4. Unscrew the crown nut (ref # 44) with the special wrench supplied with
the pump. With your fingers, you can now remove the grease ring (ref #
46) and also the V packing (ref # 47). Make sure to observe the direc-
tion of the v-shaped portion of the V packing. Install the new V packing
in the same direction. Re-assembly may be accomplished by reversing
the procedures.
5. After the pump is re-assembled, tighten the crown nut (ref # 44) with the
same special tool used to remove them.
CAUTION: DO NOT OVER TIGHTEN!!
6. After the pump is back in operation, if there is any leakage, a slight
tightening of the crown nut (ref # 44) may be necessary.
NOTE: Make sure to repack the grease cups (ref # 50) with grease
before placing the pump back in operation.
REPLACING THE SUCTION AND DISCHARGE VALVE ASSEMBLIES
1. Unscrew the nuts located underneath the cylinder (ref # 49) and remove
the discharge metal/manifold (ref # 71). Then the valve ass’y (ref # 53)
may be removed with a screwdriver.
CAUTION: Careful not to damage the plunger (ref # 26)
2. Unscrew the bolts (ref # 62) and remove the suction metal/manifold
(item #60). Then the valve ass’y (ref # 53) may be removed with a screw-
driver.
3. Clean the insets where the valves sit to make the new valves seat
properly.
4. Reassembly may be accomplished by reversing the disassembly proce-
dure.
NOTE: Suction and discharge valves are the same and both should be
replaced at the same time.
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