Stuffing Box and Stretch Assembly Of The vertical turbine pump

Open Line shaft- stuffing Box

1. Clean the underside of the stuffing box andremove the packing.

2. Install the stuffing box over the protruding topshaft and into the bore. Rotate the stuffing boxso that its ports are in the desired position.

3. Lift the stuffing box and apply a liberal amountof thread compound to the discharge headmating surface.

4. Lower the stuffing box back into place andsecure with cap screws.

5. if the stuffing box does not fit into the borewithout pushing on the shaft, then thedischarge head is out of alignment.

6. Finalize the stuffing box assembly. See Figure10 for details.

Enclosed Line shaft-stretch Assembly

Install stretch assembly using one of the two methodsbelow. See Figure 11 for details.

Direct Pul with Hoist and Dynamometer

1 .Install the tension plate manually but do nottighten.

2. Thread the tube tension adapter (special fittingavailable from the factory) onto the top of the tube until it is fully engaged.

3. Attach the dynamometer to the tube tensionadapter and the hoist hook.

4. Lift the hoist until proper tension is read on thedynamometer. You will notice that the tension plate will lift off the discharge head.

5. Manually thread the tension plate until itengages with the discharge head. Align thetension plate screw holes with the dischargehead mounting holes.

6. Lower the hoist to release tension and removethe dynamometer and tube tension adapter.

7. Install tension plate capscrews and securelytighten.

8. Install packing and thread the tension nut overthe top of the projecting tube. Tighten the tension nut firmly against the packing.

9. If the tube is too short for the tension nut, thetube must be replaced. lf the tube is too longfor the tension nut, the tube must be cut andrethreaded, Either way,the vertical turbine pump must bereinstalled and leveled.

10. Install the lock plate and lock screw.

Manual Wrench

1. Create a spanner wrench that engages twoopposing screw holes in the tension plate whilestraddling the top of the tube projection.Ensure that your wrench will not damage thethreads of the exposed tubing.

2. Use the wrench to turn the tension platecounterclockwise. The wrench should have a 3ft lever arm. Use full strength on the lever armto tighten the tension plate, making sure toalign the tension plate screw holes with thedischarge head mounting holes.

3. Install tension plate capscrews and securely tighten.

4. Install packing and thread the tension nut overthe top of the projecting tube. Tighten the tension nut firmly against the packing.

5. If the tube is too short for the tension nut, thetube must be replaced. lf the tube is too longfor the tension nut, the tube must be cut andrethreaded. Either way, the vertical turbine pump must be reinstalled and leveled.

6. Install the lock plate and lock screw.