Chamberlain POWER DRIVE PD432D 1/2 HP Owner's Manual page 9

Assemble the Rail (continued)
3. Attach rail support braces to the back rail. Loosely
insert 1/4-20x7/16" hex bolts into the aligned holes of
the end rail and rail support brace (Figure 1). Do not
finger tighten.
4. Extend the drive screw a few inches from the center
rail, and slide the sleeve onto the long journal
(Figure 2).
5. Interlock the long and short journal of the center and
back rails. Slide the sleeve over the journal connection
(Figure 3).
6. Place the c-clip onto the long journal shaft (center rail)
to ensure that the sleeve does not slide (Figure 4).
7. Slide the center rail so that the center rail and rail
brace holes are aligned (Figure 5). Secure with bolts.
8. Tighten all hex bolts.
9. Repeat steps 3-8 for header section.
Figure 1
Rail Support Brace
Rail Support Brace
Figure 2
Drive Screw
Center Rail
Figure 3
Metal Sleeve
Rail Support Brace
Rail
Metal Sleeve
Long Journal
Short Journal
Long Journal
HARDWARE SHOWN ACTUAL SIZE
Sleeve
Figure 4
Center Rail
Figure 5
Center Rail
9
Hex bolt 1/4-20x7/16"
Clip
Metal Sleeve
C-Clip
Rail Support Brace