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Displacement Pump
311019L 15
Installation
1. Fig. FIG. 18. Pull piston rod out distance shown. Screw in
pump until holes in connecting rod and piston rod align.
FIG. 18
2. FIG. 12. Push pin (31) into hole. Push retaining ring spring
into groove all the way around connecting rod.
3.
FIG. 19
. Screw jam nut down onto pump until nut stops.
Screw pump up into drive housing until top threads of
pump are flush with drive housing face (
FIG. 20
). Back off
pump and jam nut to align pump outlet to side. Tighten jam
nut by hand, then tap 1/8 to 1/4 turn with a 20 oz
(maximum) hammer to approximately 75 ±5 ft-lb (102
N·m). Connect hose (118) suction hose (57).
FIG. 19
4. FIG. 20. Fill packing nut with Graco TSL until fluid flows
onto the top of seal. Install pump rod cover (107).
FIG. 20
NOTICE
If pin works loose, parts could break off due to force of
pumping action. Parts could project through the air
and result in serious injury or property damage. Make
sure pin and retaining spring are properly installed.
NOTICE
If the pump jam nut loosens during operation, the
threads of the bearing housing and drive train will be
damaged. Tighten jam nut as specified.
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1
Drive housing face
1