why do you preload LCN closer

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4040XP Series (4040 DEL) is a universal closer. *(see note) Non Handed closer. Can be mounted on a RH or LH door. 4041XP - Adjustable size 1 to 6. Can mount push side or pull side of the doo...
STANDARD ROD AND SHOE: 4020, 4031, 1460, 1520, 1370, 1070, 1260, 4640, 4820 is: 8 3/8” LONG ROD AND SHOE: 4020: 4031, 1460, 1520, 1370, 1070, 1260, 4640, 4820 is: 12 3/8” STANDARD ROD AND SHOE: ...
Regular LCN closers have "3" regulating valves for General Speed, Latch Speed, and Backcheck. If the LCN closer has "4" regulating valves, then the closer has the Delayed Action feature. De...
LCN started putting on the green dials for the spring adjustment on the 4041's in 2001.
The 330 closer and parts were discontinued in early 2009. LCN does not have any parts available for the 330 series closer. The LCN 3030 Series would be the comparable closer replacement to the...
The old 4030/4130 closers and arms are obsolete, there is nothing to replace them. No arm from other closers will fit  There is no closer that can replace the old 4030 series closer with the exa...
The 1260, 1460, and 4030 regular arm closers on the pullside will allow 180° door opening and can be held open at 180°, frame and trim permitting.
It would be unnecessary to use the CNS/Cush arm and the Glynn Johnson overhead devices in the same application, both mechanisms stop the door.
The old 4030 series was: Handed Mounted regular arm hinge side. Had sized springs, were not adjustable. The 4033 is an obsolete closer.  If required, handing can be verified by looking at ...
The 4330 / 4430 is an obsolete ME closer replaced by the 4310ME or 4410ME Series.
LCN does not supply Allen wrenches, the size that LCN uses, are standard sizes that every installer will have in their tool kit. 3/32" Allen wrench for adjusting regulation valves: main speed, lat...
Make sure that the hold open nut is not on upside down.  The orientation of the hold open nut depends on the mounting. On a Top Jamb "Push Side" mount, the hold open nut would poi...
Low friction, high load needle bearings found in all LCN closers
Please contact the Allegion Product Support Team on all questions or inquiries pertaining to hardware finishes warranties. Please send an e-mail to the applicable Product Support team:Closers_TechP...
Special Rust Inhibitor (SRI) - is a pretreatment that is applied to the metal components prior to the addition of the LCN powder coat finish, standard or custom. ...
The LCN closers are not designed nor intended to be exterior mounted in the elements.