Craftsman 139.53930DM Owner's Manual page 25

iNSTALLATiON 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 1,
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"x1-1/4" clevis pin.
IMPORTANT: The groove on the straight door arm
MUST face away from the curved door arm (Figure 4),
• 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.
• 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.
HARDWARE SHOWN ACTUAL SIZE
©
LockWasher 5/1B" RingFastener
Clevis Pin Clevis Pin
5/16"x1" (Trolley) 5/16"x1-1/4" (Door Bracket)
Nut 5/16"-18
Hex Bolt
5/16"-18x7/8"
Figure 1
Figure 2
Figure 3
Figure 4
25
Pulley
,,
8" (20 cm) rain. _.},,
Ring
Fastener
DOor
ClevisPin
5/16"x 1-1/4"
Curved
Door Arm
Outer
Trolley
ClevisPin
5/16"x 1"
Emergency
Handle
ht
DoorArm
Pulley
\i- 8"(2Ocm) min. i
Lock /
Washers /o_
Nuts 5/16" /o/
Nuts \ /o/
5,1618-t /°°/
Bracket
_ Bolts
5/16"-18x7/8"
Pulley
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Nuts 5/16 /o7
5/16-1s t /o/
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CORRECT
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