2009/09/28 Improved Pivot Shafts Are Now Used {4153} Caterpillar


Improved Pivot Shafts Are Now Used {4153}
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2009/09/28 [SEPD1011]
UNDERCARRIAGE
PIVOT BAR GP
2009/09/28 Improved Pivot Shafts Are Now Used {4153}
Track-Type Tractor:
D6R LGP (S/N: 4HN1-UP; 8LN1-UP; 4TR1-UP; 6GR1-UP; 7AR1-UP; 8TM1-UP; 9PN1-UP)
D6RSeries II LGP (S/N: BNC1-UP; ADE1-UP; BPZ1-UP; ACJ1-UP; BPP1-UP)
D6RSeries III LGP (S/N: WRG1-UP; DMK1-UP; LGP1-UP)
D6T LGP (S/N: LKJ1-UP; SNK1-UP; KJL1-UP)

ReferenceRefer to Special Instruction, REHS4385, "Identification and Installation of Cambered Pivot Shafts" for correct identification and installation.

Description of Change: An improved pivot shaft is now used on certain D6T Series LGP (non-VPAT) machines. The pivot shaft has a downward camber in order to minimize the effects of thrust bias wear.

Cambered pivot shafts should ONLY be installed on machines that have experienced thrust bias wear related failures when NEW track chain and rollers are installed.

Adaptable To: The improved pivot shafts are adaptable to the machines that are listed above.

The improved pivot shaft is effective with the following machines:

  • D6T KJL984-UP

  • D6T LKJ404-UP

The improved pivot shaft was installed as part of the 325-8042 Pivot Bar Gp on the following machines:

  • KJL895,898,911,914-919,925,929-930,932,935,938,949-950,955,957,958-960,966,969,971-973,975-977

Table 1
Required Parts    
D6R LGP (S/N: 7AR1-UP; 4TR1-UP; 6GR1-UP; 4HN1-UP; 8LN1-UP; 8TM1-UP; 9PN1-UP)
D6R Series II LGP (S/N: BPP1-UP; BPZ1-UP; BNC1-UP; ACJ1-UP; ADE1-UP)    
QTY     Part Number     Part Name    
1     325-8043     Shaft As (Right)    
1     325-8044     Shaft As (Left)    
16     7X-0427 (1)     Bolt    
D6R Series III LGP (S/N: LGP1-UP; DMK1-UP; WRG1-UP)
D6T LGP (S/N: KJL1-983; LKJ1-403; SNK1-UP)    
QTY     Part Number     Part Name    
2     325-8041     Shaft As    
16     7X-2583     Bolt    
16     183-5105     Hard Washer    
D6T LGP (S/N: KJL984-UP; LKJ404-UP)    
QTY     Part Number     Part Name    
2     325-8041     Shaft As    
16     7X-2582 (2)     Bolt    
( 1 ) The bolts are already used with the 108-0176 Pivot Bar Gp .
( 2 ) The bolts are already used with the 223-0649 Pivot Bar Gp .

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