Specifications

20
21
Packing Replacement Procedures (Continued)
3. Push the two bolts (100-318) through the tube spacers
(331-074) & screw into the cover assembly (331-234).
Using a 1/2” wrench, tighten the two bolts evenly
(alternating between them) until you reach 20 ft-lbs.
4. Reassemble lower suction valve assembly by placing
the suction seat (331-409) O-ring (106-011), suction
ball (331-030) and suction ball guide (331-029) in the
suction nut (331-034) & screw onto the  uid pump body.
5. Reconnect the sensor (331-294-99) to the  uid pump
body. Hold sensor with a 7/8” wrench while tightening
the swivel connector (100-003) with an 11/16” wrench.
DO NOT TURN THE SENSOR.
6. Start the machine & operate slowly to check the piston
rod for binding. Adjust the bolts, holding the  uid
pump body to the cover assembly, if necessary. This
will eliminate any binding.
7. T
ighten packing nut counter clockwise until resistance
is felt against the Belleville Springs, then go 3/4 of a
turn more. Put  ve drops of Airlessco Throat Seal Oil
into the packing nut.
8. Run the machine at full pressure for several minutes.
Release the pressure by following the Pressure Relief
Procedure & readjust the packing nut per step 7 above.
9. Install the connecting rod shield (331-111) so that the
small hole is in the upper right hand corner.
suction nut (331-034) & screw onto the  uid pump body.
FIGURE 16
FIGURE 15