Installation, Operation, and Maintenance Manual

Maintenance

2. Place both stuffing box tongues in their respective casing grooves.

3. Place the pins (3-943-9) in the stuffing box and the casing wear rings in their respective slots at the casing parting surface.

4. Correct any O-ring bulging.

CAUTION:

Do not cut or damage the O-rings when lowering the rotating element into position. Loose casing rings indicate that all four anti-rotation pins are correctly located.

Assemble the casing

1. Lower the upper half of the casing (2-001-0) into place with the tapered dowel pins (2-916-

1).

2. Install the casing joint bolts (2-904-1) and tighten to the following torque values:

Screw type

5/8 in.-11 hex head capscrews (Grade 5)

Torque

140 ft-lb (190 Nm) minimum

7/8 in.-9 Ferry Cap Countr350 ft-lb (474.5 Nm) minimum bor screws (Grade 8)

NOTICE:

Avoid leakage at the main joint. Tighten bolts to the proper values in the proper sequence to obtain the proper gasket compression.

Figure 58: Bolt pattern

Complete the assembly with packing

Use the following procedure for a pump with packing.

Model 3408 Installation, Operation, and Maintenance Manual 63