GEAR (139T.) 6B9537 - Caterpillar

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. Remove four bolts (1) and cover (2).
The adjuster cylinder for the track is under high hydraulic pressure. Do not visually inspect the relief valve to see if grease is released when it is open. Look to see that the track has loosened or tightened.
2. Loosen the track as follows:a. Turn relief valve (3) one turn counterclockwise to permit grease to be released from the vent hole below the relief valve. If the track does not loosen, go to Step b.b. Turn fill valve (4) one turn counterclockwise to permit grease to be released from the vent hole below the fill valve. If the track does not loosen, start the machine and move it forward and backward. If the track does not loosen go to Step c. c. Install slug (5) that is 76.2 mm (3 in) in diameter and 63.50 mm (2.5 in) long between the track and sprocket segment. Move the machine in reverse, so the track will be pushed up by the slug. This will put tension on the track and move the front idler and track adjuster to the rear against the force of the recoil spring. This will push grease out of the vent holes. 3. Lift machine until track rollers are off the track. Install wood blocks in position under the front of the machine as shown. Install Tooling (A) under the rear of the machine as shown. 4. Attach a suitable lifting device to tooling (B) and position as shown.5. Remove four bolts (6), washers and track roller assembly (7). The weight of the track roller assembly is 34 kg (75 lb). The following steps are for the installation of the track roller. 6. Position Tooling (B) and track roller assembly (7) as shown.7. Install four bolts (6) and washers. Tighten the four bolts to a torque of 135 15 N*m (100 11 lb ft). 8. Remove the wood blocks and Tooling (A).9. Make an adjustment to the track. See the topic "Adjustment Of Tracks" in this module.Disassemble & Assemble Track Rollers
Start By:a. remove track roller 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. Remove plug (1) and drain the oil