JETStream TwinForce Series - Page 67

59
TwinForce™ Series Waterblast Unit
Figure 96: Gland Installation.
Plunger Coupling
Plunger
Figure 97: Plunger Coupling Installation.
Figure 98: Tightening the Gland.
5. Pull the plunger (Figure 96) back to meet
the crosshead pony rod. If the packing is
too tight to move the plunger by hand,
the pump can be rotated by hand (via the
belts) to move the pony rod to meet the
plunger.
6. Place the plunger coupling into position
and install the coupling bolts (Figure 97).
Tighten the bolts to 20 ft.-lb.(27 N·m).
7. Use the pump wrench and a 5 lb. (2 kg)
hammer to tighten the gland nuts to ap-
proximately 250 ft.-lb.(338 N·m). Hit the
wrench about three times using moderate
force (Figure 98). This will supply suf-
cient torque on the nut.
8. Repeat the previous steps for the remain-
ing stufng boxes.
9. Connect the water lubrication lines and
close the rod box cover.
10. It is necessary to break-in new packing
properly to ensure optimal performance
and a proper seal. Refer to “Breaking in
New Packing” on page 31 for the proper
break-in procedure.