tapped holes in the front section. Be sure to screw draw-up rods into couplings far enough to prevent stripping threads.
d.Place a 3” x 12” lg. steel channel on each end of the upper draw-up rod and a 3” x 8½” lg. steel channel on each end of the lower draw-up rods.
Refer to Figures 10 and 11 for proper placement of channel block during assembly procedures. Install nuts and washers on one end of the draw- up rods and the hydraulic rams, washers and draw-up rod clamps on the other. See Figure 13.
CAUTION
Do not apply pressure directly on threaded tappings on front and rear sections with draw-up channels during assembly procedures.
Rods should be approximately centered in openings so that rods and couplings (when used) do not drag on pipe thread in end section tappings.
WARNING
READ THE STATEMENTS BELOW BEFORE
ATTEMPTING TO USE HYDRAULIC EQUIPMENT.
*Release pressure in ram pumps before attempting to remove clamps.
*Do not stand in line with draw-up rods at either end when hydraulic pressure is being applied. As a safety measure, ends of draw-up rods should be covered while sections are being drawn in case rods should snap while under tension.
*Do not operate ram against draw-up coupling.
*Do not operate pump after ram has reached stroke limit.
e.Draw-Up Sections
Use hydraulic rams to draw up sections by applying pressure alternately on the draw-up rods. When rams reach stroke limit, release pressure in ram pumps and then move clamps to new position.
f.Continue to draw-up until all sections make contact at the ground joints.
g.After all sections have been drawn up, but before removing the hydraulic rams and draw-up rods, the 9¾” long tie rods must be installed.
The large draw-up rod lugs with dual holes are cast in the four (4) corners of each casting. Starting with the upper holes in the back section, install four (4) 5/8” x 9¾” long tie rods along with washers and nuts. Continue installing the tie rods alternating from the upper to lower set of holes in draw-up lugs until front section is secured. Be certain that all sections are drawn up IRON TO IRON at all three nipple ports.
h.Excess length of draw-up rods must not extend beyond front and rear section. To ensure proper fit of jacket, adjust accordingly. Tighten all tie rod nuts until finger tight. Then tighten them an additional ½ turn with a wrench to prevent section damage to thermal expansion.
Figure 10: Front and Rear Section Channel Block Positions (Hydraulic Draw-up)
Figure 11: Center Section Channel Block Position
(Partial Block Draw-Up)
