Craftsman 139.53644SRT Operations Instructions download pdf (Page 26)

installation Step 12

Connect Door Arm to Trolley

Follow instructions which apply to your door

type as illustrated below and on page 27.

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 1:

Fasten straight door arm section to outer trolley

with the the 5/16"x1" clevis pin. Secure the

connection with a ring fastener.

* Fasten curved door arm to the door bracket in the

same way, using the 5/16"x1-1/4" 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.

inner Trolley

r Outer Tro ........

I I _1i C_evisPin

_0 Door I_ Straight

5c,g;__,_ _ DcoU;'Ar_ Figure 1

Door Bracket

Emergency

Release

Handle

Figure 2

Hole Alignment Alternative

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.

Hardware Shown Actual Size

Nut 5/16"-18

Clevis Pie

5/16"xl" (Trolley)

Lock Washer 5/16" Ring Fastener

CIevis Pin Hex Screw

5/16"x1-1/4" (Door Bracket) 5/16"-18x7/8"

This End

Figure 3

Proceed to Adjustment Step 1, page 28. Trolley will re-engage automatically when the opener is operated.

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Craftsman 139.53644SRT Operations Instructions Page 26

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