Install Chain/Cable - Craftsman 139.53990 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 loop to the retaining slot on the
trolley, as shown (Figure 1):
• From below, push pins of master link bar up
through cable loop 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 pliers, 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.
8. Remove the locking pliers.
Idler
Figure 2
"U" Bracket
Cha_
Motor unit
"Sprocket
Toavoid possible SERIOUS INJURY to fingers from
moving garagedooropener:
• ALWAYS keephand clear of sprocket whileoperating
opener.
• Securelyattach chainspreaderBEFORE operating.
Dispensing Carton
Leave Chain and Cable
Inside OLspens_g
te Prevent Kinking.
Keep Chain and Cable
Taut When Dispensing
Master
Clip-On S Link Cap
Cable
Loop
Hole
i
Cable ' Master
Link Bar
Figure 1
i I
q I
Master Link_ Master
CiipOn 8p¢ Link Cap
i
: Pin
Threaded : Notch
Shaft l_
Master
Link Bar
Hole
Figure 3
_._ Threaded
_.-"_ \ - InnerNut Shaft
.'" Lock 5/16*
Washer
.5/16"
Figure 4
Trolley
Thruded
Shaft
10