Pella Precision Fit - Manual (Page 3)

A. Apply one piece of sill flashing tape to the sill of the
existing window. Cut the tape the same length as the
width of the existing window sill. Place one side of the
tape against the vertical leg of the stool, and work the
tape into the corner before applying to the sill. Press
down firmly. DO NOT allow the flashing tape to
extend past the blind stops.
B. Check to ensure the existing sill is level and not
bowed (humped) upward. If necessary, place shims
on the bottom of the window opening 1/2" from each
side. Shim sill only at the jambs. Once level, attach
shims to prevent movement.
Note: Improper placement of shims may result in
bowed (humped) sill.
B. Cut the balance cords on the bottom sash and lift out the sash. Allow weights to fall
to the bottom of the weight pocket.
C. Remove the parting stops by prying them out or by pulling them out with a channel
lock. There may be a small wedge of wood at the bottom of the upper sash that is next
to the parting stops. To make it easier to remove the parting stop, use a chisel to knock
off the wedge.
D. Lower the top sash and cut the balance cords
allowing the balance weights to fall into the weight
pocket. Remove the top sash.
E. Remove the balance cord pulleys. Unscrew and
remove the balance cord pulleys. If the pulleys are
press-in fit type, follow these steps:
1. Cut off accessible portions of the collars using a rotary
cutting tool with cut-off wheel.
2. Bend up the remaining areas of the collars.
3. Knock the pulleys into the balance cavity. (The pin will fall with the pulleys.)
4. If desired, remove pulleys via bottom balance access panel.
NOTE: If the pulleys and pins are not removed, they may interfere with the
replacement window’s attachment screws.
F. If desired, insulate the weight chamber by filling it
with low pressure window and door insulating foam.
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SASH REMOVAL (CONTINUED)
POCKET REPLACEMENT