Craftsman 139.53315SR Owner's Manual page 7

Assembly
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STEP 2 Install Trofley
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AS A TEMPORARY STOP, INSERT A SCREWDRIVER T,oHE %.,f_.,_ y _,_
INTO HOLE IN FRONT END OF TEE RAiL AS SHOWN. _----_
1, At_ch threaded shaft to trolley with tockw_her and nuts _ ,," __ -
as s hown .fr" .-"
2. Slide trolley assembly along rail to screwdriver stopo J_J"_ _"
NOTE: If trolley hits against the nut on Tee rail, center SJJ I
section was attached from wrong side and must be ../,'-._j_
re_sitioned. Review Step t. ._f" _SJ
Temporary Stop .._,_ J'-_
_ TtoHey _ _
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STEP 3
Attach Tee Rail To Opener Chassis
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USE ONLY THOSE SCREWS MOUNTED IN
TOP OF OPENER CHASSIS. FAILURE TO DO
SO WILL CAUSE SERIOUS DAMAGE TO THE
OPENER.
PROCEDURE: Place the opener chassis on packing
material to protect the cover, For convenient, place a
support under the cable pulley bracket.,
Remove 5/16"-18 x 1/2" w_hered screws mounted in top
of opener chassis. Align holes in back end of Tee rail with
holes in opener chassis. Fasten the _il to the chassis
with washered screws p_viously removed, CAUTION;
USE ONLY THESE SCREWS! Use of any other screv_
will cau_ serious damage to door opener. Tighten
screws securely°
losert a 5116,-18 x 718" w_hered screw into trolley stop
hole in the Tee rail _ shown. Tighten securely with a 5116"
loc_asher and nut.
Hex Screw
5/t6"-18x7/8"
Tee Rail
(Back Section)
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