Tools
Plunger nut installation tool, 011153-1
Service steps
1. Push in the E-stop.
WARNING
Place the main electrical disconnect OFF and bleed down
all high-pressure lines. Place an "Out of Service" tag on the
main electrical disconnect and lock it out.
Failure to do so may result in equipment damage or injury
to personnel.
2. Disconnect all high-pressure and low-pressure inter
-
face connections to access the tie rods. Place the
manifold and PCV assembly combination aside.
3. Use the pressure loading tool to unload the tie rods
(see Unloading the tie rods on Page 43).
For each of the three cylinders
4. Remove the end cap, high-pressure cylinder, inlet
poppet, springs, filler tube, and sleeve.
5. Slide the dynamic seal carrier off the plunger if it did
not come out with the high-pressure cylinder. Re
-
move and discard the dynamic seal and rod seal.
CAUTION
Use care when removing the dynamic seal and rod seal.
Do not scratch or nick the seal carrier bores.
6. Inspect the seal carrier and plunger for damage.
Keep and reuse the seal carrier if undamaged. The
plunger should not have touched the bore of the
seal carrier.
•
If there are contact marks on either compo-
nent, replace both components.
•
If both components are OK, skip to Step 3 of
Installation and reassembly on Page 86.
7. Remove the subplate adapter.
Note: If the plunger is damaged, replace the rod
seal in the subplate adapter by removing the snap
ring with snap ring pliers. Discard the rod seal. Keep
the snap ring and spacer for reuse.
8. Rotate the crankshaft to place the damaged plunger
in its fully extended position. Using the plunger nut
tool, remove and retain the plunger nut and spring.
Slide the plunger assembly from the crosshead bore
and discard.
© Flow International Corporation M-416 | 85
CHAPTER 4
Service
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