ADAPTER 1W1114 - Caterpillar

preparatory step: a) remove tires and wheel assemblies Brake lining wear can be checked without removing the tire and wheel assembly. Apply the brakes and observe the position of edge (2) of the brake shoe. Maximum permissible lining wear is indicated when edge (2) of shoe contacts face (1) of retracting spring. However, linings should always be replaced before this point is reached.1. Remove the brake linings from the frame assemblies as follows:
When removing brake linings and frame assemblies, be careful not to get dirt or other contaminants on wheel outer bearing cone and Duo-Cone seal.
a) Place a screwdriver against the hook of retracting spring (5), and insert the spring inserter (A) between the hook of spring and the frame assembly.b) Using the screwdriver, drive the spring through the frame assembly and out the opposite side.c) Lift the brake lining out of frame assembly.
Always reline with full sets of linings only, and install each new lining with a new retracting spring. In most cases, it is advisable to replace expander tubes when replacing linings.
2. Remove the mounting bolts (4) from each side of frame assemblies (3), and remove the two frame assemblies.3. Remove the expander tube as follows: a) Using two pry bars, raise the expander tube until nozzle (6) clears the hole in spindle.b) Slide the tube off the spindle as far as possible. c) Pull the second nozzle (6) out of spindle, and remove the expander tube.Install Brake Linings And Expander Tubes
1. Thoroughly clean the outside diameter and the nozzle holes in spindle. Apply a thin coat of 7F2770 Rubber Cement to the inside of expander tube and to outside of spindle at four locations. The cement (1) should be applied 1 in. (2,5 cm) from nozzles and nozzle holes in a pattern 2 in. (5 cm) wide by 4 in. (10 cm) long as shown. The surface of expander tube and spindle must be clean, dry, and free of dust. The cement must be applied at a temperature above 65°F (18°C) and should be allowed to dry until it becomes tacky but does not transfer to the hand when touched.2. Install the expander tube as follows: a) Install and lubricate the O-ring seals on expander tube nozzles. Carefully insert the nozzle (2) in the spindle.b) Position the top nozzle on top of spindle. Using two bars, slide expander tube in place until nozzle is near hole in the spindle. c) Reposition the two bars to raise nozzle (3). Slide the expander tube until nozzle is directly over the hole. Carefully remove the bars, and seat the nozzle into the hole.d) Using the hand, firmly apply pressure at the four cemented locations to properly seat the expander tube to the spindle.3. Position the brake frame assemblies on spindle, and install mounting bolts. Tighten bolts to 375 35 lb. ft. (51,9 4,8 mkg). The brake frame assemblies should be installed with notches (4) in the 3 o'clock and 9 o'clock positions for the right rear