BLADE AS-WIPER 6W3924 - Caterpillar

Parts Preparation and Shaft / Throttle Housing Bearing Installation
1. If visibly dirty, wash the throttle housing (1) ( before installing the needle bearing), butterfly plate (7), end cap (4) and coupler (14). Do not use ultrasonics. Use an air gun to blow out the carrier assembly.2. Press needle bearing (2), seal end first, into throttle housing (1) with a socket. The socket to be used is a 12 millimeter socket on a 1/4 inch drive. The socket that is used must have an outside diameter between .650 - .680 inches.
Figure 3-1. Installation of Shaft / Throttle Housing BearingInstall the Shaft and Butterfly Plate
1. With throttle housing (1) setting as shown, hold butterfly plate (7) inside the throttle throat with the word "top" in the position shown.2. Insert the bearing race end of shaft (9) into throttle housing (1) from left to right, through butterfly plate (7) and into needle bearing previously installed in the throttle housing. The plate must be able to rotate as shown in the lower photo of Figure 3-2.To ensure proper installation, note the position of the coupler screw access port (1a) in relation to the word "TOP" on the butterfly plate. Do not secure the butterfly plate at this time.
Figure 3-2. Install the Shaft and Butterfly PlateInstall the Carrier Assembly
1. Apply a light film of petroleum jelly to O-ring (15a) and Glyd seal (15b). Place carrier (15) over shaft (9) and gently push it down into place. Some resistance will come from Glyd seal (15b) slipping onto the shaft race and some from O-ring (15a) slipping into the housing counterbore.2. Make sure carrier assembly (15) is completely seated, then apply one drop Loctite 243 to screws (16) and secure the carrier to throttle housing (1). Torque the screws to 7.0 0.4 lb-in (0.79 0.05 N m).
Figure 3-3. Install the Carrier AssemblySecure the Butterfly Plate and Install the End Cap
1. Secure three screws (6) through butterfly plate (7) and start them into the shaft.2. To ensure butterfly plate (7) is properly located on the shaft (9) and in the throttle throat, use your fingers to firmly close the side with the word "TOP" down several times to center it in the bore. A slight bind will be felt in the closed position. Hold it there while you tighten the center screw (6). Continue holding it in place and torque the three screws (6) to 72 4 lb-in (8.1 0.05 N m).3. Apply petroleum jelly to O-ring (3) and install it in the groove in throttle housing (1).4. Apply Loctite 242 to two screws (5). Secure end cap (4) to throttle housing (1). Torque the screws (5) to 13.0 0.7 lb-in (1.47 0.08 N m).
Figure 3-4. Secure the Butterfly Plate and Install the End CapInstall the Coupler
1. Slide the wide section of coupler (14) on actuator shaft (13a) with the screws (14a) & (14b) at the bottom as shown. Leave approximately a 0.070 inch (1.78 mm) gap between the coupler