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Chamberlain 248739 Rail Assembly Parts, Installation Parts, NO, NO, NO, NO, KEY, KEY, PART, PART, DESCRIPTION, DESCRIPTION, REPAIR PARTS

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REPAIR PARTS

	Rail Assembly Parts
	1	2
	1	3
		3
	4	6
		6

5	KEY	PART	DESCRIPTION
	NO.	NO.	DESCRIPTION
	1	4A1008	Master link kit
	2	41C5141-2	Complete trolley assembly
	3	41A5665-2	Complete rail
	4	41B4103	Spring trolley nut
7	5	144C54	Idler pulley
	6	41A5250	Full belt assembly
	7	41D598-1	“U” bracket
			NOT SHOWN
		183A163	Wear pads

Installation Parts

4

2 1

3

LOCK
LIGHT
6
5	7
	7
N
O
TIC
E
10	11

8 9

13

12

KEY	PART
NO.	NO.	DESCRIPTION

1	41C494-1	Multi-Function door control panel
2	953D	3-Button remote control
3	10A20	3V2032 Lithium battery
4	29B137	Remote control visor clip
5	41A2828	Emergency release rope and handle
		assembly
6	41B4494-1	2-Conductor bell wire, white and white/red
7	41A5047-1	Door bracket w clevis pin & fastener
8	41A5047-3	Header bracket w/clevis pin & fastener
9	41A5034	Safety sensor kit (receiving and sending
		eyes) with 3' (.9 m) 2-conductor bell wire
10	178B34	Straight door arm section
11	12B776	Hanging brackets
12	178B35	Curved door arm section
13	41A5266-1	Safety sensor brackets (2)
		NOT SHOWN
	41A5257-3	Installation hardware bag
		(includes hardware listed on page 7)
	114A3351	Owner's manual
	114A3351SP	Owner's manual - Spanish

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Contents

For Residential Use Only Introduction Assembly Installation Adjustment Operation Preparing your garage door Tools needed SECTIONAL DOOR INSTALLATION Planning (Continued) Carton Inventory Hardware Inventory Assemble the Rail & Install the Trolley Fasten the Rail to the Motor Unit Install the Idler Pulley Install the Belt and Attach the Belt Cap Retainer Set the Tension Determine the Header Bracket Location Install the Header Bracket Attach the Rail to the Header Bracket Position the Opener Hang the Opener Install the Door Control Install the Lights Attach the Emergency Release Rope and Handle Electrical Requirements Install The Protector System® INSTALLING THE BRACKETS Garage door track installation (preferred): Wall installation (Figure 2 & 3): Floor installation (Figure 4): MOUNTING AND WIRING THE SAFETY REVERSING SENSORS ALIGNING THE SAFETY REVERSING SENSORS TROUBLESHOOTING THE SAFETY REVERSING SENSORS Fasten the Door Bracket ONE-PIECEDOORS Metal Doors: Connect Door Arm to Trolley ALL ONE-PIECEDOORS 1.Assemble the door arm, Figure 4: 2.Adjustment procedures, Figure 5: •Open door adjustment: decrease UP travel limit •Closed door adjustment: decrease DOWN travel limit Adjust the UP and DOWN Travel Limits Adjust the Force Test the Safety Reversal System Test The Protector System® Using Your Garage Door Opener Using the Wall-MountedDoor Control To Open the Door Manually CARE OF YOUR OPENER LIMIT AND FORCE ADJUSTMENTS: Repeat the safety reverse test (Adjustment Step 3, page 29) after any adjustment of limits or force MAINTENANCE SCHEDULE HAVING A PROBLEM 1. My door will not close and the light bulbs blink on my motor unit: 2. My remotes will not activate the door: 3. My door reverses for no apparent reason: Repeat 1 FLASH 2 FLASHES 3 FLASHES 4 FLASHES 5 FLASHES To Add or Reprogram a Hand-heldRemote Control To Erase All Codes From Motor Unit Memory *3-ButtonRemotes To Add, Reprogram or Change a Keyless Entry PIN Rail Assembly Parts Installation Parts Motor Unit Assembly Parts ACCESSORIES 950D 1-ButtonSECURITY✚® Remote Control: 953D CHAMBERLAIN® ONE-YEARLIMITED WARRANTY, 10 YEAR BELT LIMITED WARRANTY AND LIFETIME MOTOR LIMITED WARRANTY