Installation Instructions - Solo Hudson Bak-Pak 93475 Manual Del Usuario

DIAPHRAgM PUMP REPAIR KIT (# 0610406-K)
Tools needed for kit installation: 6mm Allen Head Wrench, Flat Screwdriver, 11mm Wrench or Cresent Wrench, Long Nose Pliers, Hammer, 13mm
Socket or Wrench, T-25 Torx Screwdriver, Grease or Petroleum Jelly, 2X4 Piece of wood 18" long.
1. Using a 13mm socket wrench, remove
handle bolts and loosen the stop plate (A) and
remove the two allen head screws (B) that
hold the connecting pieces to the pump rod.
Figure 1.
2. With unit laying on its back with pump
assembly facing you, remove the pump rod (C).
Loosen hose clamp and remove pressure hose
(D). Next, loosen the clamp at the base of the
sprayer (E). Figure 2.
3. Push the pressure cylinder approximately
1" out of the bottom of the tank. Then turn
the pump assy. 180 degrees. Note: Wooden
block may be used to tap the pump assembly
through bottom of tank. Remove pressure
regulating valve, if equipped before removal
of cylinder.
4. Next remove the 12 torx screws that hold
the flange in place. The flange and diaphragm
can then be removed. Figure 3.
Note: For clarity the pressure cylinder is
shown removed from the tank.
5. To replace the diaphragm, remove the
connecting rod retaining screw (G) from the
plunger and lever (F). Replace the diaphragm
and reassemble. See Figure 4.
6. The valve assembly (H) is removed using
a locally made tool. Remove red valve plate
retaining pin using needle nose pliers, then
insert tool into slots. Use a screwdriver to
rotate tool counter clockwise.
7. Once the valve assembly is removed, the
valve plates and O-rings can be replaced. The
bottom valve plate is secured into place with
a red retaining pin. Push pin into place using
needle nose pliers. Figure 6.
8. The pump housing (I) is separated from the
pressure cylinder (J) by pulling it off. Figure 7.
The O-ring can then be replaced.

Installation Instructions

Figure 1
Figure 2
Figure 3
G
Figure 4
H
Figure 5
Figure 6
I
J
Figure 7
871-936 Instruction ©2012 H. D. Hudson Manufacturing Company
9. When reassembling the pump housing to
the pressure cylinder, be sure the square tab
on the pump housing (K) is aligned in the
notch. See arrows (L) on the pressure cylinder
in Figure 8. Be careful not to pinch or nick the
O-ring.
Note: Grease O-rings for re-assembly. Screw the
valve assembly into the cylinder.
10. Place diaphragm assembly (O) onto the
pump housing (M). Place the flange (N) over
the diaphragm. Reinstall the 12 torx screws
around the outside diameter of the flange.
Figure 9.
11. Push pressure cylinder into the tank being
careful not to pinch the large O-ring (P).
Note: Wooden block may also be used for
installation of the pressure cylinder.
12. Tighten pump clamp securely (E). Install
pump rod (C). Reinstall the connecting pieces
and allen head screws (B). Reinstall the stop
F
plate (A) making sure that the bolt goes
through the rear hole. Reinstall the hose and
hose clamp making sure it is firmly secured (D).
NOTE:
Always wear rubber gloves, safety goggles and appropriate protective
clothing when repairing a sprayer. Work in a well-ventilated area. Prior to repair,
flush unit with water by filling, then spraying the water into an appropriate container
or area. Ensure that all pressure is released by locking the shut-off valve in the open
position. Once a repair is completed, fill the unit with clean water, pressurize, and
check for leaks. If the sprayer leaks, DO NOT USE. Repair leaks and recheck.
4
K
Figure 8
M
N
Figure 9
Figure 10
Figure 11
3/8'' diameter
centered 3/4''
from top
O
P