2009/06/01 The Assembly Process for the Front Axle Mount is Now Improved {3258, 3260} Caterpillar


The Assembly Process for the Front Axle Mount is Now Improved {3258, 3260}
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Underground Articulated Truck:
AD55 (S/N: ANW1-UP; DNW1-UP)
AD55B (S/N: JNW1-141)

Description of Change: Thread lock compound is now applied to each bolt before assembly. The thread lock compound will prevent the bolts from loosening.

Adaptable To: Use the following procedure for the affected machines. Refer to Table 1.

Table 1
Affected Machines    
Model     Affected Serial Numbers     Effective Serial Numbers    
AD55     S/N:ANW1-UP        
S/N:DNW1-UP    
S/N:JNW1-141    
AD55B         S/N:JNW142-UP    

Table 2
Parts Required    
Qty     Part Number     Part Description    
4     152-1351     Bolt    
4     8C-3236     Bolt    
4     8T-1583     Nut    
4     8T-5065     Locknut    
12     9X-8399     Washer    

Note: Cleanliness is an important factor. Before you begin the removal procedure, the exterior of the components should be thoroughly cleaned.




Illustration 1g01934453

(1) Mount

(2) 8T-5065 Locknut

(3) 152-1351 Bolt

(4) 8C-3236 Bolt

  1. Apply 169-5464 Quick Cure Primer and then apply 155-0695 Thread Lock Compound to the threads of four bolts (3) and four bolts (4). Install four bolts (3) and four bolts (4). Tighten four bolts (3) and four bolts (4) to a torque of 1800 ± 200 N·m (1330 ± 150 lb ft).

  1. Install four locknuts (2) and tighten to a torque of 850 ± 100 N·m (625 ± 75 lb ft).

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