SHEET AS-SOUND SUPPRESSION 2833747 - Caterpillar

Do not disconnect the air line to the parking brake rotochamber until the air pressure is zero. Failure to do so can result in personal injury.
1. Disconnect air line (1) from the parking brake rotochamber. Connect shop air to the rotochamber and release the parking brake. 2. Remove the cotter pin that holds pin (5) to the lever and rod end. Remove pin (5).3. Remove nuts (3) and the parking brake rotochamber from its mounting bracket.4. The steps that follow are for assembly purposes.5. Put parking brake rotochamber (2) in position on the bracket. Do not tighten the nuts.6. Connect shop air to the parking brake rotochamber. Install the pin that holds rod end (4) to lever (6). Install the cotter pin in pin (5).7. Tighten the nuts that hold the rotochamber to the bracket. Remove the shop air.8. Connect air line (1) to the rotochamber.Disassemble And Assemble Parking Brake Rotochamber
Start By:a. remove parking brake rotochamber 1. Remove regulator (1) and yoke (2) from the rod.
The rotochamber is under spring tension. Do not remove bolts (3) until the assembly is under compression. If the cover is removed without tooling (A), personal injury can result.
2. Install Tooling (A) on the rotochamber assembly. Also, put the wire around the assembly as shown to help keep the assembly in alignment during disassembly. 3. Remove bolts (3), cover (4), assembly (5), spring (6) and the rod from body (7). The only replacement item in the rotochamber assembly is the spring. If any other items are in need of repair, the entire unit must be replaced. 4. If necessary, remove O-ring seal (8) and felt wiper seal (9) from the rod. 5. Install felt wiper seal (9) and O-ring seal (8) on rod assembly (5). 6. Put rod assembly (5) in cover (4). Install spring (6) and body (7). 7. Put the assembly in Tooling (A) as shown.8. Put the wire assembly around Tooling (A) for alignment purposes and with the assembly in compression. Install the bolts to hold cover (4) on body (7). Remove tooling (A). 9. Install regulator (1) and yoke (2).End By:a. install parking brake rotochamber