1. The amount of the sash drag that this hinge will correct for is dependent on the ratio of the sash width versus the sash height. To calculate the amount of sash drag adjustment for any given window size, take the ratio of the width to height multiplied by 1/16.
Example: Sash size equals 24” x 36”. Width to Height ratio = .667
Total Adjustment is .667 x 1/16 = .042” (approximately 3/64th of an inch)
2. To adjust the casement sash, first fully open the window. Next, slip the adjustment wench (Truth part number 31887) onto the base of the stud found between the support arm and the track of the lower hinge. Swinging the wrench toward the lock side of the window will decrease the amount of sash drag. The maximum sash drag adjustment is reached when the stud flats are 45° to the track.
Note: Do not turn past 45° or the arm will bind on the track.
3. For severe sash drag, a similar procedure can be used on the upper hinge. Upper hinge adjustment is made by swinging the wrench away from the lock side of the window. The maximum adjustment is obtained when the stud flats are 45° to the track.
Note: Maximum adjustment may cause binding as the window is closed. Please use caution.
4. Stud may be adjusted with a 7/16” wrench if the support arm is removed before adjustment.