CYLINDER BLOCK GP 1N3574 - Caterpillar

225 Excavators ( 51U );
225 Pedestal Excavators;
227 Loggers;
613C Tractors;
3208 Truck, Industrial, Marine, And Generator Set EnginesDescription of Change: The locks have been replaced by hardened washers in the engine oil lines groups for all the above models. Also, the four locks formerly used on the oil pump cover have been removed. Both changes give better bolted joints.Adaptable As: The locks used in the engine oil lines groups can be replaced by the hardened washers if longer bolts are used. See illustration for the affected locations in an engine oil lines group.
Location of hardened washers and longer bolts in 3208 Industrial Engines (90N).The four 2A5328 Locks can be removed from the oil pump cover in the 1W2206 and 1N4254 Oil Pump Groups. The same bolts can be reused here without any washers.
The various models, affected parts groups, and the new parts are listed in the following charts.
Chart A is for the 9N6634 Lines Group-Center Sump used in 3208 Industrial (90N), (3Z), 225 Excavators, 225 Pedestal Excavators, and 227 Loggers.
Chart B is for the following: ...9N6334 Front Sump Lines Group in 3208 Truck Engines (51Z, 2Z), 3208 Industrial Engines (3Z), 3208 Generator Sets (29A, 30A), 613C Tractors....9N6641 Lines Group in 3208 Truck Engines (51Z), 3208 Industrial Engines (90N), 613B Tractors....8N9822 Lines Group in 3208 Marine Engines (1Z)....1W1050 Lines Group in 3208 Marine Engines (75V).
Chart C is for the 9N6632 Rear Sump Lines Group used in 3208 Industrial (90N).