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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 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.
Figure 2 RexScrews_
8-32x7/16" :
Chain
Spreader
"U" Bracket :
MOtOrUnit
Bolt
Toavoid possible SERIOUSINJURYto fingers from
moving garage door opener:
• ALWAYSkeep handclear of sprocket while operating
opener.
• Securely attach chainspreader BEFOREoperating.
Dispensing Carton
Leave Chain and Cable
Inside Dispensing
to Prevent Kinking.
Keep Chain and Cable
Taut When Dispensing
Figure 1
, :
i
Master Link _Link
Clip-On Spring_ Master
Cap
o j
clip.onSpri Master
Cable : :
Link : , /
, , Trolley
_ : , Threaded : P n
_ Shaft ,_ Notch
_ __ Master
" Hole Link Bar
Idler _,__ F _ Sl-otted Hole '
o,ey O : r
Figure 3
,eaded
Shaft
" Inner Nut
•J Lock 5/16"
Washer
5/16"
Figure 4
Trolley
Threaded
Shaft
Round
Hole
lO