SEAL-O-RING 1794274 - Caterpillar

Engine:
3608 (S/N: 6MC; 5PG; 8LL; 7WR)
3612 (S/N: 9RC; 9FR)
3616 (S/N: 1PD; 1FN)
3618 (S/N: 2MW)
G3606 (S/N: 3XF)
G3606B (S/N: 4ZS)
G3608 (S/N: 4WF)
G3612 (S/N: 1YG)
G3616 (S/N: 4CG)
A new valve adjusting screw is available for the above engines. The new 204-4385 Adjusting Screw has a 6.38 mm (0.25 inch) hex head that is used to set valve lash and to set fuel injector timing. The machined hex replaces the slot in the former adjusting screw. The new adjusting screw requires a 6.38 mm (0.25 inch) hex drive socket in order to set the valve lash and the fuel injector timing. The hex drive makes valve lash adjustment and fuel injector timing easier and more accurate.The new adjusting screw has been added to the 127-2448 Cylinder Head Kit. This cylinder head kit provides spare parts for the cylinder head and for the valve train. See Table 1 for the contents of the 127-2448 Cylinder Head Kit. This cylinder head kit is packaged according to the requirements of the marine certification society.
Table 1
Contents of the 127-2448 Cylinder Head Kit    
Qty     Part Number     Description    
1     1W-0022     Valve And Injection Pushrod    
3     1W-1756     Lifter Insert    
2     4W-3034     Clamp    
3     5P-7701     O-Ring Seal    
1     5P-8119     O-Ring Seal    
2     6I-2491     Bridge Assembly    
3     6V-5019     Jam Nut    
2     6V-5625     Bolt    
2     6V-7607     Hard Washer    
2     7E-7202     Button    
1     7E-7205     Rocker Arm    
3     7L-9061     O-Ring Seal    
2     129-4859     Rocker Arm    
2     179-9542     Push Rod    
3     204-4385     Adjusting Screw