COMPRESSOR GP -B 0R8174 - Caterpillar

Start By:a. separate track 1. The weight of idler (1) is 143 kg (315 lb). Fasten a hoist and tool (A) to idler (1) remove two bolts (3) and washers from each side of the idler.2. Remove one cap (2) from each side.3. Lower idler (1) slightly and remove. It may be necessary to raise the front of the roller frame with a small jack to provide clearance to remove the roller.4. Remove one block (4) from each side. The following steps are for installation of the idler.5. Fasten a hoist and tool (A) to idler (1). Put one block (4) on each side of the idler in position on the dowel.
The hole in idler shaft (5) must be aligned with pin (6) in cap (2).
6. Put the idler in position on roller frame. Align the hole in idler shaft (5) with pin (6) in cap (2). Install cap (2) with bolts (3) and washers. Tighten the bolts to a torque of 475 50 N m (350 37 lb ft). Remove tooling (A).End By:a. connect trackDisassemble Idlers
Start By:a. remove idlers 1. Use a slow speed drill and a 12.7 mm (.50 in) drill bit, and remove plug (4) and stopper (3) from the end of the shaft.
The shaft will be free to fall when the retainers are removed.
2. Remove 12 bolts (2) and retainer (1) from both sides of the idler. 3. Remove O-ring seal (6) from retainer (1). If the Duo-Cone seals are to be used again, put identification marks on the seals so they can be assembled and installed in their original position.4. Put identification marks on the Duo-Cone seal. Remove Duo-Cone seal (5) from retainer (1). 5. Put identification marks on Duo-Cone seal (7). Remove Duo-Cone seal (7) and toric stabilizer (8) from shaft (9). 6. Pull shaft (9) out of the idler and remove the shaft.Assemble Idlers
Use caution when using isopropyl alcohol. Follow the manufacturer's recommendations on the container when using isopropyl alcohol.
1. Clean and inspect all parts for wear or damage. Replace all parts that are worn or damaged.2. Make sure all parts are free of oil film, dust or other foreign material. Use isopropyl alcohol and a clean cloth or paper for cleaning.
The bearing in idler assembly (1) can be damaged when shaft (2) is installed in the idler.
3. Carefully put shaft (2) in position in idler assembly (1). 4. Put toric stabilizers (3) in position on both ends of shaft (2). See Installation of Duo-Cone Floating Seals before installation of any of the Duo-Cone seals.5. Put toric ring (4) in position in seal ring (5). Make sure the toric ring is straight in seal ring (5).6. Put ring (4) and seal ring (5) in isopropyl alcohol until the entire toric ring is wet. 7. Use tool (A) to install the toric ring and seal ring (5) on shaft (2). Install the rings until tool (A) makes contact with the end of shaft (2). 8. Use a depth micrometer (6)