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Repair
311594Z 17
Reassembly
1. See F
IG
. 5. Install the coupling nut (14) on the
lower’s piston rod (PR).
2. Orient the lower (22) to the gear reducer (GR) as
shown. Position the lower on the tie rods (3). Screw
the tie rod locknuts (15) onto the tie rods handtight.
3. Assemble the inlet and outlet manifolds (17) to the
lower, using new gaskets (16). Torque the clamps
(18) to 15-20 ft-lb (21-27 N•m).
4. Torque the locknuts (15) to 50-60 ft-lb (68-80 N•m).
5. At the outlet manifold (17):
a.
On pumps with a sensor circuit:
Install a new
black o-ring (41) on the transducer (25a). Insert
the transducer into the outlet manifold (17).
Torque the adapter (42) first, then the nut (M) to
15-20 ft-lb (21-27 N•m).
b.
On pumps without a sensor circuit:
Install a
black o-ring (41) on the plug (45). Screw the
plug into the outlet manifold (17) and torque to
15-20 ft-lb (21-27 N•m).
6. Install a black o-ring (41) on the plug (45). Screw the
plug into the inlet manifold (17) and torque to 15-20
ft-lb (21-27 N•m).
7. Ensure that the collars (13) are in place in the cou-
pling nut (14).
8. Place a 3/4 in. wrench on the flats of the slider pis-
ton (9), to keep it from turning when you are tighten-
ing the coupling nut (14). Orient the wrench so it is
braced against one of the tie rods (3) or the pump
stand. Tighten the coupling nut (14) onto the slider
piston (9) and torque to 75-80 ft-lb (102-108 N•m).
9. Install the shields (72) by engaging the bottom lips
with the groove in the wet-cup cap. Snap the two
shields together.
10. Turn on power and jog the motor to bring the other
drive to the bottom of its stroke. Repeat procedure
to connect the other lower.
NOTE: Update the drive software to reflect the change
in size of the lowers. See manual 311596.
11. Flush and test the pump before reinstalling it in the
system. Connect hoses and flush the pump. While it
is pressurized, check for smooth operation and
leaks. Adjust or repair as necessary before reinstall-
ing in the system.