CONTROL GP-ENGINE ELECTRONIC 1496989 - Caterpillar

1. Put the machine on a flat level floor.
The grease in the track adjusting cylinder is under high pressure. Grease coming out of the relief valve of the track adjuster, which is under high pressure, can penetrate the body causing personal injury or death. When loosening the tension on the track, loosen the relief valve only one turn. Do not visually inspect the relief valve to see if grease is being released from the track adjuster. Instead, watch the track to see if it loosens. If the track does not loosen after opening the relief valve, move the machine forward and backward to release the tension.
2. Release the tension on the track. Loosen relief valve (1) only one turn. If the track does not loosen after opening the relief valve, move the machine forward and backward until the tension is released. 3. Loosen bolt (2) that holds track carrier roller (3) to the mounting bracket on the undercarriage frame assembly.
Typical Example4. Put wood blocks and Tool (A) under the track assembly as shown. Lift the track assembly off of the track carrier roller. Remove track carrier roller (3). The weight of the track carrier roller is 18 kg (40 lb). The following steps are for the installation of the track carrier roller.5. Make sure the shaft of the track carrier roller and the bore in the mounting bracket on the undercarriage frame assembly is clean and free of dirt. 6. Put the track carrier roller in position in the mounting bracket. Adjust the carrier roller until distance (B), the distance between the outside face of the mounting bracket and the carrier roller is 7.0 0.5 mm (.28 .02 in).7. After adjusting the position of the carrier roller in the mounting bracket, tighten bolt (2).8. Make sure the track carrier roller rotates smoothly by hand. Slowly lower the track assembly on to the track carrier roller with Tool (A).9. Tighten the tension of the track. Refer to the topic "Tracks" in the Operation & Maintenance Manual.Disassemble & Assemble Track Carrier Rollers
Start By:a. remove track carrier rollers Fluid Spillage ContainmentCare must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to "Tools And Shop Products Guide", NENG2500 for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates.1. Thoroughly clean the outside of the track carrier roller prior to disassembly. 2. Remove plug (2), and drain the oil from the carrier roller into a suitable container for disposal. The capacity of the track carrier roller is 120 5 ml (4.08 0.17 oz.).3. Remove three socket head bolts (1) and cover (3) from the track carrier roller. 4. Remove O-ring seal (4) from cover (3). 5. Remove socket head bolts (5) and (6) and retainer (7)