Chamberlain LiftMaster Security + 3270 1/2 HP Manuel D'instructions page 33

REPAIR PARTS
Rail Assembly Parts
2
Installation Parts
1
5
9
10
1
7
2
3
4
6
7
8
11
12
3
4
KEY PART
NO. NO.
1 4A1008
2 41B5424
3 41B3869-1
4 2777BD
2778BD
2770BD
5 41A5434-11 Full belt assembly
6 41B4103
7 83A11-2
KEY PART
NO. NO. DESCRIPTION
1 41A5273-1 Multi-Function Door Control Panel
2 371LM Single button remote control
3 10A20 3V2032 Lithium battery
4 29B137 Remote control visor clip
5 41A5047-1 Door bracket w/clevis pin & fastener
6 41A2828 Emergency release rope & handle
assembly
7 178B34 Straight door arm section
8 41A4353-1 Header bracket w/clevis pin &
fastener
9 41A5034 Safety reversing sensor kit
(receiving and sending eyes) with
3' (.9 m) 2-conductor bell wire
10 41A5266-1 Safety reversing sensor brackets (2)
11 41B4494-1 2-Conductor bell wire, white & white/
red
12 178B35 Curved door arm section
NOT SHOWN
41A2770-6 Installation hardware bag
(includes hardware listed on page 5)
114A4186 Owner's manual
33
5
6
DESCRIPTION
Master link kit
Belt pulley bracket
Complete trolley assembly
One-piece rail 7' (2.1 m)
Complete rail 8' (2.4 m)
Complete rail 10' (3 m)
Tensioner assembly
Rail grease