Wayne-Dalton 451, 452 Counterbalance Cables/ Bottom Brackets, Fig C, Fig B, Fig D, Fig A

COUNTERBALANCE CABLES/ BOTTOM BRACKETS

For doors using the broken cable safety device, see page 19.

For Model 451 doors with the bottom bracket shown in FIG A, locate the bottom section and the left and right hand bottom brackets. Secure the counterbalance cables to the brackets using clevis pin, washer and cotter key as shown in FIG A. Secure bottom brackets to bottom section using (5) 1/4” x 7/8” self-drilling screws as shown in FIG B. Insert a roller into the bottom brackets as shown in FIG C.

For Model 451 doors with the bottom bracket shown in FIG D, Secure the counterbalance cables in the same manner as described above. Attach the bracket to the section with (5) 1/4” X 7/8” self drilling screws. Attach the roller carrier to the bottom bracket with (4) 1/4” X 7/8” self drilling screws. Insert a roller and 3/16” roller spacer into the roller carrier; the inner holes of the roller carrier are for 2” track; the outer holes of the roller carrier are for 3” track.

COUNTERBALANCE CABLE

BOTTOM BRACKET

WASHER

CLEVIS PIN

COTTER KEY

BOTTOM

SECTION

(5)1/4” X 7/8” SELF DRILLING SCREWS

BOTTOM

BRACKET

ASSEMBLY

BOTTOM

SECTION

ATTACHED BOTTOM BRACKET ASSEMBLY

FIG A

ROLLER

FIG C

FIG B

	(4) 1/4” X 7/8” SELF
	DRILLING SCREWS
(5) 1/4” X 7/8” SELF	ROLLER CARRIER
DRILLING SCREWS
3/16”
ROLLER
SPACER
ROLLER
	OUTER HOLES FOR 3” TRACK
INNER HOLES FOR 2” TRACK
	FIG D

4