PLUG AS 1488405 - Caterpillar

The seal rings are flat on inside diameter and round on outside diameter. Seal rings should be installed with flat side (painted side) toward the bottom of grooves in carrier.
41. Install balance piston (55) on carrier (54).42. Lubricate the twelve planet gear bearing assemblies with a multi-purpose grease. Place two bearing assemblies in each planet gear. Push the rollers in bearing assemblies toward outside of gears. Position the six planet gears (56) in carrier with a washer on each side of each gear. 43. Install six planet shafts and retaining balls with holes (53) in shafts aligned with notches (57) in carrier. Install the No. 2 sun gear (61).44. Chill the No. 1 carrier rear bearing assembly. Install bearing assembly (58) in bearing cage (59) with hole in bearing aligned with hole in cage. Install bearing assembly retaining dowel.45. Install the seal ring on bearing cage. Lubricate seal ring with clean SAE 30 engine oil.46. Position bearing cage on carrier with oil holes (60) in cage aligned with O-ring seals (62) in carrier. Install the bearing cage retaining bolts and locks. 47. Turn the carrier over, and install the No. 1 carrier front bearing assembly (64). Install bearing assembly retaining ring (63).48. Lubricate bearing assemblies (58) and (64) with clean SAE 30 engine oil.49. Install the seal ring in No. 1 clutch piston and carrier. Lubricate seal rings with clean SAE 30 engine oil, and center the rings in their grooves. Place No. 1 clutch piston on carrier, and gently push piston into carrier.
When installing piston into carrier, exercise care to avoid damaging or breaking seal rings. Under no circumstances should the clutch piston be hammered into place.
50. Install the No. 1 clutch piston retainers, retaining bolts, and locks. 51. Install two 1/2"-13NC forged eyebolts in top of carrier. Attach a hoist and position No. 1 carrier on output shaft. Center seal rings (67) in oil manifold and seal ring in carrier bearing cage. Lower the carrier into place while aligning planet gears (66) with ring gear (65).
Use care when lowering carrier into position in order to prevent damaging or breaking seal rings in bearing cage and oil manifold.
52. Position No. 1 clutch gear (69) on carrier, and install gear retainers, bolts, and locks. 53. Install the five No. 1 clutch disc assemblies and four plates starting with a disc assembly. Install springs (73) and reaction pins (74).54. Heat the input flange bearing assembly in oil for ten minutes at a temperature not to exceed 275° F (135° C). Position ring (70) on input flange, and install bearing assembly (71).55. Install the input flange (72) with the drilled passage behind ball in input flange aligned with drilled passage (68) in carrier. Make sure springs (73) and reaction pins (74) are seated properly in input flange. Install and tighten flange retaining bolts to 85 5 lb. ft. (11,8 0,7 mkg). 56. Using clutch testing nozzle (D) and compressed air, check the operation of each clutch piston. Add