2012/01/31 Caterpillar


The Louver and Plenum Assembly Has Been Improved on Certain M and M Series 2 Motor Graders {734D, 7451}

Usage:

120M B9C
Motor Grader:
120MSeries 2 (S/N: M9H1-UP; R9N1-UP; R9W1-UP)
120M (S/N: B9C1-UP; B9N1-UP; B9W1-UP; D9W1-UP)
12MSeries 2 (S/N: R9R1-UP)
12M (S/N: B9F1-UP; B9R1-UP)
140MSeries 2 (S/N: M9D1-UP; R9G1-UP; M9J1-UP; R9M1-UP)
140M (S/N: B9D1-UP; B9G1-UP; D9G1-UP; B9M1-UP)
14M (S/N: B9J1-UP; R9J1-UP)
160MSeries 2 (S/N: M9E1-UP; M9K1-UP; R9L1-UP; R9T1-UP)
160M (S/N: B9E1-UP; B9L1-UP; B9T1-UP; D9T1-UP)
16M (S/N: B9H1-UP; R9H1-UP)
24M (S/N: B9K1-UP)

Description of Change: The louver and plenum assemblies have been improved on the machines listed above. The openings in the plenum for the louvers have been made smaller with closer tolerances for an improved fit of the louvers. The louver functionality has also been improved by aligning internal parts of the louver to provide smooth operation of the louver.

Adaptable To: The improved louver and plenum assemblies are adaptable to the following machines.

  • 120M Series 2 (S/N: M9H1-207; R9N1-101; R9W1-103)

  • 120M (S/N: B9C1-1115; B9N1-354; B9W1-209; D9W1-419)

  • 12M Series 2 (S/N: R9R1-105)

  • 12M (S/N: B9F1-1400; B9R1,1388)

  • 140M Series 2 (S/N: M9D1-955; R9G1-153; M9J1-507; R9M1-141)

  • 140M (S/N: B9D1-3834; B9G1-1056; D9G1-1362; B9M1-1078)

  • 14M (S/N: B9J1-1450; R9J1-429)

  • 160M Series 2 (S/N: M9E1-409; M9K1-425; R9L1-130; R9T1-131)

  • 160M (S/N: B9E1-812; B9L1-506; B9T1-183; D9T1-311)

  • 16M (S/N: B9H1-866; R9H1-446)

  • 24M (S/N: B9K1-529)

The improved louver and plenum assemblies are effective with the following machines.

  • 120M Series 2 (S/N: M9H208-UP; R9N102-UP; R9W104-UP)

  • 120M (S/N: B9C1116-UP; B9N355-UP; B9W210-UP; D9W420-UP)

  • 12M Series 2 (S/N: R9R106-UP)

  • 12M (S/N: B9F1401-UP; B9R1389-UP)

  • 140M Series 2 (S/N: M9D956-UP; R9G154-UP; M9J508-UP; R9M142-UP)

  • 140M (S/N: B9D3835-UP; B9G1057-UP; D9G1363-UP; B9M1079-UP)

  • 14M (S/N: B9J1451-UP; R9J430-UP)

  • 160M Series 2 (S/N: M9E410-UP; M9K426-UP; R9L131-UP; R9T132-UP)

  • 160M (S/N: B9E813-UP; B9L507-UP; B9T184-UP; D9T312-UP)

  • 16M (S/N: B9H867-UP; R9H447-UP)

  • 24M (S/N: B9K530-UP)

Table 1
Required Parts    
Item     Qty     Part Number     Description    
1     1     171-4047     Vent Louver As    
2     1     294-0998     Plenum As    

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