HEHR INTERNATIONAL INC

PRODUCT FIELD SERVICE MANUAL

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OPERATOR REPLACEMENT (TORQUE, AWNING, AND CRANK-OUT WINDOWS)

 

SIDE OPERATOR, BOTTOM MOUNTED:

OPERATOR REMOVAL

                                                        

Crank the window open slightly for working room and to relieve tension on the torque mechanism. Remove the operator knob and the screen. Remove the E-rings holding the short torque arms to the pivot bars and pry them off.  Drill out the rivet heads holding the operator and the bushing (at the opposite end of the torque tube) using a power drill. Knock out the rivets with a drift punch. Lift the torque tube at the bushing end and rotating so that the bushing is lifted up and out of the channel.  Once the bushing and torque tube are removed, the operator can be pried out.

OPERATOR INSTALLATION:

Place the new operator into the channel. Turn the handle counter-clockwise as far as it will go. Insert the torque tube with its torque arms rotated fully upward. Be sure the same end of the tube goes into the operator.  Raise the opposite end of the tube high enough to slip on the bushing. Lower the bushing and tube into place and align the holes.  Resecure the operator either with pop rivets or small machine screws, star washers and nuts.  Use the same technique on the bushing.  Reattach the torque arms to the link arms and slide the E rings into place.  Slide the knob onto the operator shaft and open and close the window, checking for smooth operation. If satisfactory, replace the screen and secure the operator knob onto its shaft using the screw provided.

 

 

CENTER OPERATOR:                       

OPERATOR REMOVAL:

Crank the window open to give yourself working room. Remove the crank screw and crank. Remove the screen.  Remove the four screws holding the operator. Lift up the operator. This will take the tension off the torque tubes, which can then be taken out of the operator.

OPERATOR INSTALLATION:

Slip the torque tubes into the sides of the new operator, noting the position of the notches in the tube ends. As necessary, rotate the operator shaft and move the vents so that the torque tubes fit snugly into the operator sides. Press downward on the operator to reset it in the center of the windowsill. Align the mounting holes and replace the screws, thereby securing the operator into place. Slide the crank onto the operator shaft and open and close the vents to check for smooth operation. If satisfactory,  replace the screen, operator crank and screw.

 

SIDE OPERATOR (TOP MOUNTED)

OPERATOR REMOVAL:

Open the window completely to give yourself working room. Remove the operator knob. Remove the screen. Remove the E rings which connect the torque arm to the link arm and carefully pry them apart. Using a suitable screwdriver, loosen the screws holding the torque rod bushing to the frame. Pry the bushing loose and allow it to drop down. This will allow you to pull the torque tube, springs, and torque arm assembly from the operator.  Remove the screws holding the operator in place. Pry the operator out of the channel and remove it.

OPERATOR INSTALLATION: Using the operator knob, turn the operator shaft fully counterclockwise. Slide it into the channel and align the holes. Screw the operator into place using the screws provided. Rotate the torque tube assembly so that it fits snugly into the operator. Place the bushing onto the opposite end and slide it up into place under the mullion. Align the holes of the bushing and frame. Reinstall the bushing using the screws provided. Attach the torque arms to the link arms and secure them with the E rings. Slide the knob onto the operator shaft. Open and close the vent to check for smooth operation. If satisfactory, snap the screen into place. Install the operator knob onto the shaft, using the screw provided.

 

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