Install The Chain/Cable - Craftsman 139.53910D Owner's Manual

ASSEMBLY STEP 4
Install the Chain/Cable
1. Pull the cable around the idler pulley and toward the
trolley.
2. Connect the cable to the retaining slot on the trolley,
as shown (Figure 1):
• From below, push pins of master link bar up
through cable link and trolley slot.
• Push master link cap over pins and past pin
notches.
• Slide clip-on spring over cap and onto pin notches
until both pins are securely locked in place.
3. With the trolley against the screwdriver, dispense
the remainder of the cable/chain along the rail
toward the motor unit into the slot on the chain
spreader, around the sprocket onto the chain
spreader and continuing to the trolley assembly.
The sprocket teeth must engage the chain
(Figure 2).
4. Check to make sure the chain is not twisted, then
connect it to the threaded shaft with the remaining
master link.
5. Thread the inner nut and lock washer onto the
trolley threaded shaft (Figure 3).
6. Insert the trolley threaded shaft through the hole in
the trolley. Be sure the chain is not twisted
(Figure 4).
7. Loosely thread the outer nut onto the trolley
threaded shaft•
Idler
Pulle
8. Remove the screwdriver•
Figure 2
Bolt
Hex Screwsj_ j7
8-32x7/16 i ii i
_Chain
Spreader
"U' Bracket _ _ Motor Unit
Sprocket
To avoid possible SERIOUSINJURYto fingers from
moving garage door opener:
• ALWAYSkeep hand clear of sprocket while operating
opener.
• Securely attach chain spreader BEFORE operating.
Dispensing Carton
Leave Chain and Cable
Inside Dispensing
"_ Carton to Prevent Kinking.
Keep Chain and Cable
Taut When Dispensing
k
k i
Master Link
Clip-On Spring _ Master
Cap
Figure 1
Master Link_
Clip-On Sprirlg'_'_k Master
_Link Cap
k
Cable
Link
ble
\ Slotted
i
Hole
i
k
k
_ Master
Link Bar
Trolley
Threaded Pin
k
Shaft k _jNotch
X _ Master
Round _Link Bar
Hole
Figure 3
., .!,r"
." #_ _ hqner Nut Shaft
• Lock 5/16"
Washer
5/16'
Figure 4
Trolley
Threaded
Shaft
Round
Hole
10