UMP Replacement Instructions
Replacing the UMP for the Red Jacket STP
11
Figure 5. Locating Packer And Manifold O-Rings
13. Remove the manifold’s female connector’s o-ring (see Figure 5). Get a 0.862’’ ID x 0.103’’ wide o-ring from
the hardware/seal kit and lubricate it with petroleum jelly. Slide the o-ring over the female connector and push
it down into its groove.
14. Reinstall the extractable unit into the manifold and tank. Torque the extractable lock-down nuts in an alternating
pattern to 50 ft-lbs (68 N•m).
Remove the springs around the lock-down studs and replace with the springs from the kit.
For all models with the ‘RA’ suffix, stainless steel lock-down nuts and washers are used and
found in the kit. Apply anti-seize (also found in the kit) to the lock-down studs prior to nut
and washer installation.
15. Turn the air purge screw 2 - 3 turns counterclockwise (see Figure 2).
The air purge screw is retained by a hitch pin to limit travel. Do not attempt to rotate
beyond 3 turns.
16. Turn the pump on and let it run for about 2 minutes to purge air from the manifold’s hydraulic cavities. While
the pump is still running, turn the air purge screw clockwise until it is completely closed.
Upper extr
a
ct
ab
le o-ring
(-
3
45 [
3
.975'' ID x 0.210'' wide])
Middle extr
a
ct
ab
le o-ring
(-
3
44 [
3
.
8
50'' ID x 0.210'' wide])
Lower extr
a
ct
ab
le o-ring
(-
3
4
3
[
3
.725'' ID x 0.210'' wide])
Fem
a
le connector o-ring
(-11
8
[0.
8
62'' ID x 0.10
3
'' wide])
Contr
a
ctor
s
b
ox o-ring
s
(-92
8
[2.090'' ID x
0.11
8
'' wide])
Extr
a
ct
ab
le wiring comp
a
rtment cover
o-ring (-92
8
[2.090'' ID x 0.11
8
'' wide])
Le
a
k detector port o-ring
(-22
8
[2.2
3
4'' ID x 0.1
3
9'' wide])
053-4
NOTICE
WARNING