RING 9T7123 - Caterpillar

3508 (95Y, 68Z),
3512 (1LM, 49Y, 65Z),
3516 (27Z, 71Z) Industrial Engines;
3508 (6TJ),
3508B (5PS),
3512 (2WK),
3512B (3ZW),
3516 (9KF),
3516B (6HZ) Locomotive Engines;
3508 (96Y, 69Z),
3508 with EUI (3PS),
3508B (2BM, 7SM, 1TW),
3512 (50Y, 66Z),
3512 with EUI (3RS),
3512B (7HM, 4TN, 2GW, 2EZ),
3516 (29Z, 72Z),
3516 with EUI (3SS),
3516B (8CN, 8KN, 3CW, 4BW) Marine Engines;
3508 with EUI (3TS),
3508B (3DM, 3DW),
3512 with EUI (3WS),
3512B (8EM, 1PW),
3516 with EUI (3XS),
3516B (9AN, 2FW) Marine Auxiliary Engines;
3508 (23Z, 70Z),
3508 with EUI (5XM, 3LS),
3508B (4GM, 6PN, 2HW),
3512 (24Z, 67Z),
3512 with EUI (6PM, 3MS),
3512B (8RM, 6WN, 4AW, 5AW),
3516 (4XF, 5SJ, 25Z, 73Z),
3516 with EUI (7KM, 3NS),
3516B (6HN, 7RN, 1NW, 2JW) Generator Set Engines;
3508 (97Y),
3512 (51Y),
3516 (28Z) Vehicular EnginesImproper removal of the crankshaft rear seal and wear sleeve can damage the crankshaft. The correct procedure to remove and install the crankshaft rear seal and wear sleeve follows and can also be found in your application's Disassembly and Assembly module.
Procedure to Remove the Crankshaft Rear Seal and Wear Sleeve
Any time the crankshaft seal is removed from the wear sleeve, a new wear sleeve and crankshaft seal must be installed as a unit. If the old seal is put back on the wear sleeve, the seal will be damaged.
1. Remove the bolts from adapter (1). Install two 5/16 in - 18 NC forcing screws in the adapter to remove it from the flywheel housing. On engines that do not have adapter (1), use tooling (C) to remove the lip seal from the flywheel housing bore. 2. Remove O-ring seal (3) and crankshaft seal (2) from adapter (1). 3. Install tool (B) in the flywheel housing adapter bore as shown.4. Install tool (A) between tool (B) and the wear sleeve (4). Turn tool (A) until the edge of the tool makes a flat place (crease) in the wear sleeve. Do this at several places around the wear sleeve until the wear sleeve can be removed from the end of the crankshaft by hand.