Install The Chain/Cable - Craftsman 139.53920DM Owner's Manual

ASSEMBLY STEP 4
Install the Chain/Cable
1. Pull the cable around the idler pulley and toward the trolley.
2. Connectthe 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. Checkto make sure the chain is not twisted, then connect it to
the threaded shaft with the remaining master link.
5. Threadthe inner nut and lock washer onto the trolley threaded
shaft (Figure 3).
6. Insert the trolley threadedshaft 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. Removethe screwdriver.
Figure2
Hex Screws 8-32x7/16"
Chain Spreader
Motor Unit
Sprocket
To avoid possible SERIOUSINJURYto fingers from moving
garage door opener:
• ALWAYS keephand clear of sprocket while operating opener.
• Securely attach chain spreader BEFORE operating.
Dispensing Carton
:_ Leave Chain and Cable
Inside Dispensing Carton
t_Cabl_e to Prevent Kinking.
Taut When Dispensing
FigureI
®
I
Cable Link__.
Cable
Master Link
Clip-On Spring
astor
II
/ II t
/_ Threaded : ',
Shaft _ Pin Notch
•" \ _ \ Er'---- Master
\ Round Hole Link Bar
', Slotted Hole
i
(_)-_ Master
Link Bar
Figure4
Figure 3
J
----- Lock Washer 5/16"
t
/
Y
Threaded
Shaft
Round
Hole
10