31
Service And Repair
Replacing the UMP
Disconnect, lock out, and tag power at the panel before servicing the
pump.
When servicing equipment, use non-sparking tools and use caution when removing or
installing equipment to avoid generating a spark.
Kit Required:
• UMP Replacement Kit, P/N 144-327-4 (P/N 410818-001 for AG Applications)
• Hardware/Seal Kit, P/N 410154-001
• Die Spring Kit, P/N 410485-001
Procedure:
1.
If a ball valve is installed down line from the pump, close it.
2.
Remove the two extractable lock-down nuts and discard them (see Figure 26). The springs on the lock-down
studs between the extractable’s flange and the manifold will push the extractable up, breaking the seals.
Figure 26. Extractable Lock-down Nuts
Confirm that the lifting eyebolt is properly torqued to 10 ft-lbs (13.6 N•m) with a mini-
mum of 6 full threads installed. Occasionally, eyebolts are removed after pump instal-
lation and corrosion may occur in the threaded areas of the wiring compartment cover
(eyebolt plug) and the eyebolt. If corrosion has occurred, the cover and eyebolt should
be replaced.
3.
Utilize the lifting eyebolt to lift out the extractable unit and place it on a clean surface.
Removal of the
extractable section of the pump must be conducted with caution.
Make certain that the extractable
section remains centered within the riser pipe and that no portion of the extractable binds during the removal
process. If binding occurs during removal, stop and determine the cause of the binding and correct the
situation before proceeding with removal.
4.
Lift out the extractable unit allowing the pump to drain into the tank before complete extraction.
5.
Place the unit on a clean surface.
OFF
WARNING
Extr
a
ct
ab
le
lock-down
n
u
t (M12 fl
a
nged)
Protective pl
u
g -
remove to
a
cce
ss
s
ervice
s
crew
Extr
a
ct
ab
le
lock-down
n
u
t (M12 fl
a
nged)
Air p
u
rge
s
crew
Contr
a
ctor'
s
b
ox
C
a
p
a
citor
a
cce
ss
cover
WARNING