Craftsman 139.18876 User Manual

Installation Step 12
Connect Door Arm to Trolley
Follow instructions which apply to your door
type as illustrated.
Make sure garage door is fully closed. Pull the emergency release handle to disconnect the outer trolley from
the inner trolley. Slide the outer trolley back (away from the door) about 2" as shown in Figures 1, 2 and 3.
Figure 2:
•
Bring arm sections together. Find two pairs of holes
that line up and join sections. Select holes as far
apart as possible to increase door arm rigidity.
Ring 
Fastener
Door
Bracket
Clevis Pin
Curved
Door Arm
Straight
Door Arm
Clevis
Pin
Lock
Washers
5/16"
Nuts
5/16"-18
Door Bracket
Screws
5/16"-18x7/8"
Emergency
Release
Handle
Rope
Lock
Washers
5/16"
Nuts
5/16"-18
Screws
5/16"-18x7/8"
Step 10 Conect Door Arm to Trolley Sectional
12/15/88 - 2/10/89 - 3/28/89 - 6/20/89 - 6/27/89
Cut This End
Inner Trolley
Outer Trolley
Ring 
Fastener
Door
Bracket
Clevis Pin
Curved
Door Arm
Straight
Door Arm
Clevis
Pin
Lock
Washers
5/16"
Nuts
5/16"-18
Door Bracket
Screws
5/16"-18x7/8"
Emergency
Release
Handle
Rope
Lock
Washers
5/16"
Nuts
5/16"-18
Screws
5/16"-18x7/8"
Step 10 Conect Door Arm to Trolley Sectional
12/15/88 - 2/10/89 - 3/28/89 - 6/20/89 - 6/27/89
Cut This End
Inner Trolley
Outer Trolley
Figure 3:
• If holes in curved arm are above holes in straight
arm, disconnect straight arm. Cut about 6" from
the solid end. Reconnect to trolley with cut end
down as shown.
• Bring arm sections together.
• Find two pairs of holes that line up and join with
screws, lock washers and nuts.
Ring 
Fastener
Door
Bracket
Clevis Pin
Curved
Door Arm
Straight
Door Arm
Clevis
Pin
Lock
Washers
5/16"
Nuts
5/16"-18
Door Bracket
Screws
5/16"-18x7/8"
Emergency
Release
Handle
Rope
Lock
Washers
5/16"
Nuts
5/16"-18
Screws
5/16"-18x7/8"
Step 10 Conect Door Arm to Trolley Sectional
12/15/88 - 2/10/89 - 3/28/89 - 6/20/89 - 6/27/89
Cut This End
Inner Trolley
Outer Trolley
Proceed to Adjustment Step 1, page 28. Trolley will re-engage automatically when the opener is operated.
26
Figure 1:
• Fasten straight door arm section to outer trolley
with a clevis pin. Secure the connection with a ring
fastener.
• Fasten curved section to the door bracket in the
same way as shown.
Figure 1
SECTIONAL Doors Only
Lock Washer 5/16"
Nut 5/16"-18
Ring Fastener
Hex Screw
5/16"-18x7/8"
Clevis Pin
5/16"x1"
Rondelle-frein
de 5/16 de po
Écrou de
5/16 de po-18
Anneau d'arrêt
Vis à tête hexagonale
de 5/16 de po-18x7/8 de po
Axe de chape de
5/16 de pox1 po
Hardware Shown Actual Size
Figure 2
Figure 3
Hole Alignment Alternative

Craftsman 139.18876 Specifications

General

Brand	Craftsman
Model	139.18876
Category	Garage Door Opener
Language	English