17
Figure 11: Center Section Channel Block Position
(Partial Block Draw-Up)
Figure 10: Front and Rear Section Channel
Block Positions (Hydraulic Draw-up)
CAUT ION

Do n ot ap ply p ressu re di rectly on t hread ed

tappin gs o n fro nt an d rea r sec tions with

draw- up c hanne ls du ring assem bly

proce dures.

Rods shou ld b e app roxima tely center ed in

open ings so th at ro ds an d co upling s (w hen

used) do not d rag o n pi pe th read in en d

sectio n tap pings .

WARNING

READ THE STATEMENTS BELOW BE FORE
ATTEMPTING TO USE HYDRAULIC EQUIPMENT.
*
*
*
*
Relea se p ressu re in ram p umps befor e
attemp ting to rem ove clamps .
Do n ot st and i n line with draw -up rods at
either end whe n hyd raulic pres sure is
being app lied. As a safet y mea sure,
ends of d raw-u p rod s sh ould be co vered
while sect ions are b eing drawn in case
rods shou ld sn ap w hile u nder tens ion.
Do n ot op erate ram again st dra w-up
coupling.
Do n ot op erate pump afte r ram has
reach ed s troke 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.
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.