Maintenance
12
3A1185B
9.
Using a 1/2” wrench, unscrew the two bolts (8) from
the cover assembly (14). The fluid pump (9) will be
hanging loosely at this point.
10. Remove the connecting rod pin (1) out of the con-
necting rod (13), allowing the removal of the fluid
pump (9) from the machine.
Fluid Pump Reinstall
1.
Loosen the packing nut and ensure that the piston
rod (10) is in its upper position in the fluid pump
body, snap cap onto packing nut and slip the sleeve
(2) and the retaining ring (3) over the piston rod
(10).
2.
Push the piston rod (10) up into the connecting rod
(13) and align the holes. Insert the connecting rod
pin (1) through the connecting rod (13) and piston.
Slip the sleeve (2) up over the connecting rod pin (1)
and insert the retaining ring (3) into the groove on
the connecting rod (13).
3.
Push the two bolts (8) through the tube spacers (11)
and screw them into the cover assembly. Using a
1/2” wrench, tighten the two bolts (8) evenly (alter-
nating between them) until you reach 20 ft-lbs.
4.
Reassemble lower suction valve assembly by plac-
ing the suction seat, O-ring, suction ball and suction
ball guide in the suction nut (7) and screw onto fluid
pump body.
5.
Reconnect the sensor to the fluid pump body. Hold
sensor with a 7/8” wrench and tighten the swivel (6)
with a 11/16” wrench.
6.
Start the machine and operate slowly to check the
piston rod (10) for binding. Adjust the two bolts (8),
holding the fluid pump body to the cover assembly, if
necessary. This will eliminate any binding.
7.
Tighten packing nut clockwise until resistance is felt
against the Belleville Springs, go 3/4 of a turn more.
Put five drops of Airlessco Throat Seal Oil in the
packing nut.
8.
Run the machine at full pressure for several min-
utes. Release the pressure by following the
Pres-
sure Relief Procedure
, page 7, and readjust the
packing nut per step 7 above.
9.
Install the connection rod shield (12) so the small
hole is in the upper right hand corner.
Servicing the Outlet Valve
Disassembly
1.
Disconnect the Fluid Pump
, page 11.
2.
Place piston holder (2) in a vise. Slide piston (1) into
the holder and lock in place with a 3/8” dowel.
3.
Use a 1/4” allen wrench to unscrew the outlet seal
retainer from the piston (1).
4.
Remove the outlet seat (6), O-ring (5) and outlet ball
(4).
5.
Inspect outlet ball (4) and seat for wear. Replace as
necessary. Ensure seat is right side up.
6.
While piston (1) is still locked in the holder, install
parts back into the piston (1) in the following order:
a.
Outlet Ball (4)
b.
Outlet Seat (6)
c.
O-Ring (5)
1
2
3
4
6
7
8
9
10
13
14
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