2013/02/04 Caterpillar


A New Spacer for the Rear Fender Group is Now Used on Certain Motor Graders {7252}

Usage:

12M B92
Motor Grader:
120MSeries 2 (S/N: M9C1-UP; M9H1-UP; R9N1-UP; R9W1-UP)
120M (S/N: R9A1-UP; B9C1-UP; R9C1-UP; B9N1-UP; B9W1-UP; D9W1-UP)
12MSeries 2 (S/N: F9B1-UP; F9M1-UP; R9S1-UP)
12M (S/N: R9B1-UP; B9F1-UP; B9R1-UP; B921-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)

Description of Change: A new spacer for the rear fender support is now used on the machines listed above. The new spacer is more robust and will prevent distortion. The new spacer will improve the service life of the fender.

Adaptable To:




Illustration 1g03343149

The new 178-6450 Spacer (1) is part of the rear fender group. The 178-6450 Spacer is a replacement for 7Y-9798 Pipe .

The 178-6450 Spacer is adaptable to the machine and effective in production with the machine that are listed in Table 1.

Table 1
Sales Model     Adaptable to the machine     Effective in production with the machine    
120M     S/N:B9C1-1195     S/N:B9C1196-UP    
S/N:B9N1-354 S/N:B9N355-UP    
S/N:B9W1-209 S/N:B9W210-UP    
S/N:D9W1-UP -    
S/N:R9A1-126 S/N:R9A127-UP    
S/N:R9C1-110 S/N:R9C111-UP    
120M Series 2     S/N:M9C1-324     S/N:M9C325-UP    
S/N:M9H1-396 S/N:M9H397-UP    
S/N:R9N1-120 S/N:R9N121-UP    
S/N:R9W1-117 S/N:R9W118-UP    
12M     S/N:B921-133     S/N:B92134-UP    
S/N:B9F1-1497 S/N:B9F1498-UP    
S/N:B9R1-1388 S/N:B9R1389-UP    
S/N:R9B1-127 S/N:R9B128-UP    
12M Series 2     S/N:F9B1-171     S/N:F9B172-UP    
S/N:F9M1-312 S/N:F9M313-UP    
S/N:R9S1-133 S/N:R9S134-UP    
140M     S/N:B9D1-4225     S/N:B9D4226-UP    
S/N:B9G1-UP -    
S/N:B9M1-UP -    
S/N:D9G1-1399 S/N:D9G1400-UP    
140M Series 2     S/N:M9D1-1498     S/N:M9D1499-UP    
S/N:M9J1-796 S/N:M9J797-UP    
S/N:R9G1-240 S/N:R9G241-UP    
S/N:R9M1-229 S/N:R9M230-UP    
14M     S/N:B9J1-1450     S/N:B9J1451-UP    
S/N:R9J1-884 S/N:R9J885-UP    
160M     S/N:B9E1-881     S/N:B9E882-UP    
S/N:B9L1-UP -    
S/N:B9T1-UP -    
S/N:D9T1-UP -    
160M Series 2     S/N:M9E1-409     S/N:M9E410-UP    
S/N:M9K1-425 S/N:M9K426-UP    
S/N:R9L1-170 S/N:R9L171-UP    
S/N:R9T1-207 S/N:R9T208-UP    

Rework Procedure

Use the following procedure to replace 7Y-9798 Pipe with 178-6450 Spacer :

Table 2
Required Parts List    
Item     Qty     Part number     Description    
1     4     178-6450     Spacer    
2     8     8T-4779     Bolt    
3     4     7X-2554     Bolt    
4     12     9X-8257     Washer    

  1. Remove the rear tire from the machine. Refer Disassembly and Assembly, KENR9467, "Wheel and Tire (Rear) - Remove and Install".

  1. Remove the rear fender from the machine.



    Illustration 2g03343150

  1. Cut and remove the existing 7Y-9798 Pipe (A) from support assembly on rear bracket as shown in Illustration 2.



    Illustration 3g03343154

  1. Grind off any existing spacer material until the area is flush with the bracket as shown in Illustration 3.



    Illustration 4g03343156

  1. Replace the cutoff spacer with the new 178-6450 Spacer (1). Do not weld the new spacer to the bracket, leave loose.

  1. Install 7X-2554 Bolt and 9X-8257 Washer along with the spacer in slot B as shown in Illustration 4.

  1. Install 8T-4779 Bolt in slot C and slot D as shown in Illustration 4.

  1. Apply Loctite and torque the 7X-2554 Bolt and 8T-4779 Bolts to 240 ± 40 N·m (177 ± 30 lb ft).

  1. Install fender and support assembly on the machine.

  1. Install the tire onto the machine. Refer Disassembly and Assembly, KENR9467, "Wheel and Tire (Rear) - Remove and Install".

  1. Repeat the procedure for other bracket and other side of the machine.

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