Chamberlain 1022, 1042, 1024 manual Assembly for Chain Drive Opener

POWER HEAD & RAIL ASSEMBLY

Assembly for CHAIN DRIVE OPENER

NOTE: Handle carefully! Drive chain can slide out of rail.

NOTE: For power head and rail assembly locate Bag 1 from Box 1.

NOTE: Copy serial number from power head frame and record it on warranty page.

NOTE: Standing at the powerhead, facing the door, the bullet MUST be on the RIGHT side of the rail.

1.Attach rail assembly to power head by aligning the sprocket onto the motor shaft. Use (3) bolts, 5/16"-18 x 1/2" (Fig. 1-5).

2.Tighten the chain by turning the adjustment nut clockwise. The chain adjustment nut is located in the Chain Pulley Bracket (opposite rail end from the power head) (Fig. 1-6).

3.Tighten chain until chain is approximately 1/8 inch above the base of the rail at midpoint on the rail (Fig. 1-6). Do NOT over tighten chain.

CAUTION

You should have removed all ropes and/or cables (NOT door lift cables) and disabled the door lock already. If you have not, remove all ropes and/or cables and disable garage door lock NOW before continuing with installation (Fig. 1-8).

Set assembled power head and rail aside. Begin with Section 2 INSTALLATION.

Assembly for BELT DRIVE OPENER

NOTE: For power head and rail assembly locate Bag 1 from Box 1.

NOTE: Copy serial number from power head frame and record it on warranty page.

NOTE: Standing at the powerhead, facing the door, the bullet MUST be on the RIGHT side of the rail.

1.Attach rail assembly to power head by aligning the sprocket onto the motor shaft. Use (3) bolts, 5/16"-18 x 1/2" (Fig. 1-5).

2.Tighten the belt by turning the adjustment nut clockwise. The belt adjustment nut is located in the Belt Pulley Bracket (opposite rail end from the power head) (Fig. 1-7).

3.Tighten belt until belt is approximately 1/8 inch above the base of the rail at midpoint on the rail (Fig. 1-7). Do NOT over tighten belt.

CAUTION

You should have removed all ropes and/or cables (NOT door lift cables) and disabled the door lock already. If you have not, remove all ropes and/or cables and disable garage door lock NOW before continuing with installation (Fig. 1-8).

Set assembled power head and rail aside. Begin with Section 2 INSTALLATION.

Use

5/16"-18 x 1/2" Bolts

FIG. 1-5 Rail - Power head assembly.

	Chain Pulley Bracket (at wall end of rail)
	Use 1/2" socket
	on adjustment nut
	Tighten nut to move pulley this direction
	Chain
	Chain
	1/8"
	T-Rail at center of rail assembly	T-Rail
FIG. 1-6	Chain adjustment.

	Belt Pulley Bracket (at wall end of rail)
	Use 1/2" socket
	on adjustment nut
	Tighten nut to move pulley this direction
	Belt
	Belt
	1/8"
	T-Rail at center of rail assembly	T-Rail
FIG. 1-7	Belt adjustment.

Remove

Remove

FIG. 1-8 Disable garage door lock.

PN# 3642036534, 02/26/2010 REV. 1 11