END BIT (R.H.) 8J7162 - Caterpillar

Engine:
C-18 (S/N: JZB1-UP)
Generator Set:
C18 (S/N: LNB1-UP; LZB1-UP; C6C1-UP; G4C1-UP; N1C1-UP; L8D1-UP; N1D1-UP; STD1-UP; DKE1-UP; LXK1-UP; STM1-UP; EKW1-UP; M1Y1-UP; M1Z1-UP)
Description of Change: An improved assembly process for the installation of the flywheel reduces crankshaft journal lobing.The new process uses a reduced torque for the flywheel mounting bolts.The old torque was 100 5 N m (75 4 lb ft). Next, turn the bolt by an additional 90 5 degrees.The new torque is 270 40 N m (200 30 lb ft) with no additional turning of the bolt.Note: Use the new torque when replacing the rear crankshaft seal as well as anytime the flywheel is installed.ReferenceRefer to Disassembly and Assembly, "Flywheel - Remove and Install"Adaptable To: The new torque is adaptable back to first production on the serial numbers listed above. The change is effective for the serial numbers listed in Table 1.
Table 1
Effective Serial Numbers    
S/N:C6C00734-UP    
S/N:DKE00558-UP    
S/N:EKW01678-UP    
S/N:G4C04927-UP    
S/N:JZB01519-UP    
S/N:LNB01178-UP    
S/N:L8D00404-UP    
S/N:LXK00810-UP    
S/N:LZB00133-UP    
S/N:M1Y00300-UP    
S/N:M1Z01922-UP    
S/N:N1C00546-UP    
S/N:N1D00941-UP    
S/N:STD00230-UP    
S/N:STM01777-UP