COUPLING 2N4955 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 8B-7548 Push-Puller Tool Group 1
8B-7559 Adapter 2
8H-0684 Ratchet Wrench 1
8B-7561 Step Plate 3
B 138-7573 Link Bracket 2
C 169-5464 Quick Cure Primer - Start By:
Remove the starting motors. Refer to Disassembly and Assembly, "Air Starting Motor - Remove" or Disassembly and Assembly, "Electric Starting Motor - Remove and Install".
If the exhaust elbow is attached to the flywheel housing, remove the exhaust elbow and remove the bracket for the exhaust elbow. Refer to Disassembly and Assembly, "Exhaust Elbow - Remove and Install".
Remove the engine oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Use the timing pins in order to properly time the engine. Refer to Testing and Adjusting, "Camshaft Timing". Refer to Testing and Adjusting, "Finding the Top Center Position for the No. 1 Piston".
Remove the crankshaft rear seal and the wear sleeve. Refer to Disassembly and Assembly, "Crankshaft Rear Seal and Wear Sleeve - Remove".
Remove the camshaft covers and gaskets.
Remove the bolts and plates from the camshafts.
Illustration 1 g00912881
Use Tooling (A) in order to remove camshaft drive gears (1).
Illustration 2 g00912883
Install Tooling (B) into flywheel housing (2). Attach a suitable lifting device to Tooling (B). The weight of flywheel housing (2) is approximately 251 kg (553 lb).
Remove the bolts and remove flywheel housing (2) and the gasket.
After removing flywheel housing (2), clean the mating surface of the cylinder block and the mating surface of the flywheel housing with Tooling (C). If necessary, use a gasket scraper and a solvent in order to remove any residual gasket material. Both mating surfaces must be clean, dry, and free of any oil before installation.