DURKOPP ADLER 838 Service Instructions Manual

Also see for 838: Instruction manual Instruction manual Parts list

Contents

2.8 Checking the switch over of the feed clutchRule:The feed clutch should be switched over when it is motionless (i.e.,when it is in the dead centre point of its pendulum motion). This can bedetected from the rotational direction of the belt pulley (1) in front ofand behind the dead centre point.1 2 3 4A 270° 276° 88° 93°B 0 0–Set the maximum stitch length.–Turn the handwheel (A) so that it is positioned at “270” degrees (referto Table / A). Push the bartacking lever down. Check if the rotationaldirection (B) of the belt pulley (1) corresponds to the directionspecified in the table. Do the same for “276” degrees.–If the rotational directions do not correspond to those specified in thetable, correct the necessary settings. If the clutch switches over toosoon (on a smaller angle), tentatively loosen the adjusting nut (5) (seechapter 2.6) and repeat the check. Continue loosening until you locatethe correct position for the nut. If the clutch switches over too late,tighten the controlling nut (5).Caution: Risk of Injury!Turn the main switch off.Only carry out this adjustment when the machine is turned off.CAUTION!Imprecise settings can shorten the lifespan of the machine.12B 1