GENERATOR 5N0042 - Caterpillar

Table 1
New Hoist Cylinders    
Model    Hoist Cylinder    Piston    
725
D250E Series II     285-4031     283-8467    
730
D300E Series II     285-4032     283-8468    
735
D350E Series II     285-4033     283-8469    
740
D400E Series II     285-4034     283-8470    
Table 2
Former Hoist Cylinders    
Model    Hoist Cylinder    Piston    
725     241-4071     141-4338    
D250E Series II     141-4335    
730     241-4062     141-4344    
D300E Series II     141-4341    
735     241-4065     143-7682    
D350E Series II     143-7678    
740     241-4068     141-6673    
D400E Series II     141-6667    The new hoist cylinders are effective on 725 (S/N: B1L942-UP), 730 (S/N: B1M867-UP), 735 (S/N: B1N571-UP) and 740 (S/N: B1P1425-UP).The new hoist cylinders are direct replacements of the former hoist cylinders on all earlier machines.The new piston assemblies are direct replacements of the former piston assemblies in the former hoist cylinders. When you order a former piston, a new piston and one wear ring will be shipped. Refer to Table 3.
Table 3
Replacement Piston Information    
Model    Former Piston    Replacement Piston and Wear Ring    
725
D250E Series II     141-4338 Piston     283-8467 Piston
4J-3745 Wear Ring    
730
D300E Series II     141-4344 Piston     283-8468 Piston
4J-4630 Wear Ring    
735
D350E Series II     143-7682 Piston     283-8469 Piston
4J-4630 Wear Ring    
740
D400E Series II     141-6673 Piston     283-8470 Piston
4J-4606 Wear Ring    Note: When a new piston is ordered, an additional wear ring will be shipped with the new piston. This ensures that sufficient wear rings are present for the assembly of the hoist cylinder.
Illustration 1 g01273397
A typical arrangement of seals on the former piston (1) Piston (2) Seal (3) Wear ringFormer pistons (1) use an arrangement of one seal (2) and two wear rings (3). Refer to Illustration 1.
Illustration 2 g01273398
A typical arrangement of seals on the new piston (1) Piston (2) Seal (3) Wear ringNew pistons (1) use an arrangement of one seal (2) and three wear rings (3). Refer to Illustration 2.When you service a new hoist cylinder or a former hoist cylinder that is installed with a new piston, use three new wear rings instead of two wear rings.