UMP Replacement Instructions
Replacing the UMP for the Red Jacket STP
9
Figure 2. Extractable Lock-Down Nuts
Confirm that the lifting eyebolt is properly torqued to 10 ft-lbs (13.6 N•m) with a
minimum of 6 full threads installed. Occasionally, eyebolts are removed after pump
installation 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.
For all models with the ‘RA’ suffix, take care not to damage the powder coating on the
packer/manifold and discharge head when placing the pump on the working surface.
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.
6.
Remove the old UMP by removing the four bolts holding the discharge head as shown in Figure 3. Discard the
old gasket and fasteners.
7.
Visually inspect the pigtail connector in the discharge head - replace if damaged. Be certain the indexing tab
of the pigtail is seated in the notch of the discharge head.
Figure 3. UMP Bolts And Gasket
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
053-6
WARNING
NOTICE
053-1
Gasket
Fasteners (4)