Removal Of Automatic Locking HubCaution: The brake shoe and brake drum grease is a special type and should not be substituted when it is necessary to change the grease, replace the hub body and brake assembly and/or brake drum 2. Remove axle bolt with washer. 3. Remove hub body. a. Remove the mounting nuts. b. Using a brass bar and hammer, tap on the bolt heads and remove the cone washers. Caution: Do not tap the hub body when removing the cone washer. If the stud bolt is damaged or deformed, replace with a new one. c. Pull off the hub body. 4. (more…)

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The following instruction should be followed to install the king pin Trailer Plate. FOR KING PIN BOXES WITH A FLANGE: (Figure 2).
1. Place the Capture Plate {J2} over the king pin, with the guide wedge towards the rear of the trailer (wedge facing down). Align the Capture Plate {J2} square with the king pin box and clamp in place to prevent movement.
2. Mark the holes for drilling through the Capture Plate {J2} onto the king pin box flange. Use holes that are located as far from the king pin as possible.
3. Remove the Capture Plate {J2} or use it as a guide and drill ž “ holes through the flange.
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FOR KING PIN BOXES WITH A FLANGE: Figure3.
1. Place the Trailer Plate {J2} over the King Pin, with the guide wedge towards the rear of the trailer (wedge facing down). Align the Trailer Plate {J2} square with the king pin box and clamp in place to prevent movement.
2. Mark the holes for drilling through the Trailer Plate {J2} onto the King Pin Box flange.
3. Remove the Trailer Plate {J2} or use it as a guide and drill ž “ holes through the flange.
4. Re-install the Adapter Plate (as in step 1).
5. Use the ž” bolts provided, to secure the Trailer Plate {J2} onto the king pin box flange. A minimum of 10 bolts must be used to fasten the plate on. For use with heavy trailers, more bolts will be needed to secure this plate.

FOR KING PIN BOXES WITHOUT FLANGES: (Figure 4)
1. Place the Trailer Plate {J2} over the King Pin, with the guide wedge towards the rear of the trailer (wedge facing down), and hold in place to prevent movement.
2. The Trailer Plate {J2} can be secured to the King Pin Box sides by welding angle iron supports to the King Pin Box, or use the procedure in step 3. (Angle iron is not provided).
3. For the holes where you cannot reach the backside, drill holes with a #8 drill and tap with a ž”-20 tap.
4. If the Trailer Plate {J2} extends beyond the King Pin Box, then install the Knee Braces as shown in Figure 4.
5. Install the Trailer Plate {J2}, using the ž” bolts provided, to secure the Trailer Plate {J2} onto the King Pin Box. A minimum of 10 bolts must be used to fasten the plate on. For use with heavy trailers, more bolts will be needed to secure this plate. The fasteners used in step 4 do not count as part of the minimum number of bolts required.

FOR KING PIN BOXES THAT ARE SHORTER FRONT TO BACK: (Figure 5 )
1. Place the Trailer Plate {J2} over the king pin, with the guide wedge towards the rear of the trailer (wedge facing down), and measure the distance from the front and rear of the king pin box to the respective edges of the Trailer Plate {J2} (to the bend of the Trailer Plate {J2} in the front). Referring to Figure 5, fashion two plates, 3/16” to 1/4” thick, that will cover the holes of the Trailer Plate {J2} showing in front and rear of the king pin box.
2. While the trailer plate is in position under the king pin box, clamp these plates to both the front and rear of the Trailer Plate {J2}. Remove the Trailer Plate {J2} and drill matching holes in the two support plates with a 1/4” bit using the Trailer Plate {J2} as a guide.
3. Fasten the two support plates to the Trailer Plate {J2} with the 1/4” Bolts {K7} and Lock Nuts {K8} provided.
4. Replace the Trailer Plate {J2} on the king pin box, check for square alignment and weld the support plates to the king pin box.
5. Attach the Knee Braces {K2,3 & 4} to the king pin box and the Trailer Plate {J2}. Braces {k2} may have to be welded on if the interior of the king pin box is not accessible.

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Instructions
1. Remove old fitting
2. Retap existing hole with tap provided until tap bottoms out. (See Figure 1.)
3. Clean hole of any remaining chips
4. Install Sonnax adapter and tighten lightly. Leading edge of Sonnax cooler line adapter will seal where tap bottomed. (See Figure 2.)
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