DISC 6Y7913 - Caterpillar

New seals must be preloaded before they are installed to prevent them from being damaged or broken. There is a correct method to preload new seal rings prior to installation. Place your hands on each end of the seal ring, and pull (wind) the ends several inches past each other or until they almost make contact. Use care to keep the ring shaped like a circle. This will make an even bend (or ring “set”) all around the ring. When the seal ring is in the groove of the carrier, the ends must butt together lightly. Do not bend the seal ring. This does not make an even bend all the way around the ring.Do not attempt to use this method to preload a used seal ring. Also, do not use this procedure for cast iron seal rings. This will cause used or cast iron rings to break.
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Heat the bearing (16) to a maximum temperature of 120°C (248°F) and install the bearing on hub assembly (7). The bearing must be seated squarely on the hub assembly after the bearing has cooled.
Install three rings (15) on hub assembly (7).
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Install bearing (14) in housing (13).
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Fasten a suitable lifting device and Tooling (A) to housing (13). Lower the housing into position on hub assembly (7).
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Install ring (12) on hub assembly (7).
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Start with a plate and install plates (20) and discs (21). Alternate the plates and discs.
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Install plate (18) and bolts (17) on housing (13).
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Install sleeve bearing (9) in hub assembly (7).
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Install seals (10) and (11) in piston (8).
Put clean oil on the seals. Install piston (8) in hub assembly (7).
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Install input hub (4).
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Start with a plate and install clutch plates (5) and friction discs (6).
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Install sleeve bearing (3) in plate (2).
Put plate (2) in position on the housing, and install bolts (1). End By:
Connect the final drive, steering clutches, and brakes. Refer to Disassembly and Assembly, "Final Drive, Steering Clutch, and Brakes - Connect".