power adjustment numbers

RELATED FAQS

Question
Answer
 The correct method (process) for setting the hold open is: The 4010 hold open arms are handed, verify correct hand arm. (R or L stamped on main arm) Loosen the hold open nut. Opened the door ...
LCN started putting on the green dials for the spring adjustment on the 4041's in 2001.
Mechanical pre-loading of spring to adjust closing force
The AL series latches are not adjustable.
You must use the drive bushing that is supplied with the 179L control trim.  It is different from teh 1790 bushing.
Step 3 and 4 of 179L Instructions will show the old drive bushing being removed & the new drive bushing getting installed
power adjustment, spring adjustment