BRACKET 2G6695 - Caterpillar

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The special instruction will provide you with the process for inspecting the duo-cone seal gp on your machine. The duo-cone seal gp may need replaced.Reference Information
Illustration 1 g02130953
(1) Gap (2) Housing ramp (3) Seal ramp (4) Flat (5) Spherical (6) Seal ring (7) Toric ring (8) Housing (A) Stationary side (B) Rotating side (C) Axis of rotationProcedures to be Performed Before Disassembly
Note: Before you disassemble the wheel group, capture the information that follows.Note: Some checks may not be applicable on all machines.
The duo-cone seal gp may start leaking if a machine has been idle for a long period. Run the machine for several days in order to reseat the seals. Clean the wheel group and clean the rim. Monitor the duo-cone seal gp for continued leaking. Replace the duo-cone seal gp if the duo-cone seal gp continues to leak.
Make sure that the oil reservoir for the hoist system and the brake system has the proper amount of oil. Make sure that the oil is not overfilled. Ensure that the axle oil level is at the correct level.
Check that the axle breather is operating correctly. Follow the appropriate service literature for cleaning and inspecting the breather.
Check for a history of overheating of the brake oil. If there has been a history of overheating, the rubber portion of the seal may have taken a compression set. Review the appropriate service literature in order to check for brake overheating. The brake oil may overheat or the axle oil may overheat. Make sure that the machine is configured correctly for the application or provide operator training in order to stop the warnings for overheating temperatures.
Illustration 2 g02080253
Measure gap (A) in the cavity for the duo-cone seal gp before disassembling the axle in order to repair the wheel group. This measurement with the assembled height of the face can be used to determine the amount of load on the face of the seal.
Refer to the appropriate Disassembly and Assembly Manual. Measure the Height of the Assembled Seal
Note: Measure the assembled height of the seal. You must take a measurement in four positions. The positions are located 90 degrees from each other on the seals for the inner and outer wheel if the machine contains two seals. The height measurements of the seal provide two critical pieces of information. Look for a ring seal that has slipped. Also look for a compression set in the ring seal if the height of the seal is below the normal assembled height. If one of the four measurements are off by more than 1 mm (0.039 inch), then the seal is slanted in the bore, which may be from assembly.Note: If your machine has two seals per wheel group, then the height of the seals will need to be measured.
Illustration 3 g02080374
The measurement should be taken from the face of