Craftsman 139.53920D Owner's Manual page 25

IHSTALLATllON STEP 12
Connect Door Arm to Trolley
Follow instructions which apply to your door type as
illustrated below and on the following page
SECTIONAL DOORS ONLY
• 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 pulley) about 8" (20 cm) as
shown in Figures l, 2 and 3,
. Figure 1:
- Fasten straight door arm section to outer trolley
with the 5/16"x1" clevis pin., Secure the
connection with a ring fastener
- Fasten curved section to the door bracket in the
same way, using the 5/16"xl-1/4" clevis pin
. 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.,
o Figure 3, Hole alignment alternative:
- If holes in curved arm are above holes in straight
arm, disconnect straight arm= Cut about 6"
(15 cm) 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
bolts, lock washers and nuts.,
• Pull the emergency release handle toward the
opener at a 45° angle so that the trolley release
arm is horizontal. Proceed to Adjustment Step 1,
page 27 Trolley will re-engage automatically when
opener is operated,
Clevis Pin
5/! 6"xl" (Trolley}
HARDWARE SHOWN ACTUAL SIZE
©
Lock Washer 51t6" R_ng Fastener
°1
Cievis Pin Hex Bo_t
5116'xt l/4'(DoorBracket} 5!16"-18x7,"8"
Clevis Pin
5J16"x1-1/4'
Figure 1
Pulley
Figure 2
Door Bracket
>Bolts
5t_ 6_.,18x7/8"
Figure 3
Pulley
! :_. 8" (20 em_, rnfn _,)j:
Losk /_/
., . Washc#s/_/
Nuts _1_:" 707
o(_ _ CUt this end
25