Craftsman 139.53515SR - I/2HP Garage Door Opener User Manual


 
Assembly
STEP 4 Install Chain and Cable
DO NOT REMOVE CHAIN AND CABLE FROM CARTON.
Detach cable from side of carton. Remove master links
from coin envelope..
MASTER LINK PROCEDURE: Insert pins of master link
bar through cable loop and hole in front end of trolley (A)
as shown. Push cap over pins and onto notches. Slide clip-
on spring over cap and onto pin notches until pins are
locked in place.
Caution: Keep the chain taut while installing to help
prevent kinking.
With trolleyagainstthe screwdriver,dispensecablearound
pulley.Proceedback aroundopenersprocket(B)-besure
sprocketteethengagechain-and forward to the threaded
trolleyshaft (C).
Use second master link to connect the chain to the flat
end of shaft as shown. Check to make sure chain is not
twisted.
REMOVE SCREWDRIVER.
A
FlatEnd
Ca_e
Loop
install Chain
B Opener In This Direc1_n
Master Link
Clip-OnSpring
Threaded End
of Trolley Shall
C Master Link
' I Clip-OnSpring
Master
kCap
i i
h n
Tee Rail
1
1
i
InstaJl Chain and Cable
In This DireCtion
Cable
Pulley
, Trod_y
Master
Link
Tad Slot Plate
ATTACH SPROCKET COVER TO CHASSIS:
Insert back tab in chassis slot. Then bend cover forward
and insert front tab in slot provided on mounting plate.