BRACKET 1253513 - Caterpillar

Illustration 1 g01329008
New 7N-4940 Bracket (1) New larger holes 13.8 mm (0.54 inch) (2) New larger spotfaces 30 1 mm (1.2 0.04 inch) The current rear 6I-3524 Oil Cooler Bonnet and the current rear 1W-4935 Oil Cooler Bonnet may be reworked by machining a 30 1 mm (1.2 0.04 inch) spotface (3) at the mounting hole locations. Maintain a minimum thickness of 11.9 mm (0.469 inch) (A) on the mounting flange. Refer to illustration 2. Table 3 lists the effective engine serial numbers for the improved water lines groups.
Illustration 2 g01374236
6I-3524 Oil Cooler Bonnet and 1W-4935 Oil Cooler Bonnet (3) New larger spotfaces 30 1 mm (1.2 0.04 inch) (A) 11.9 mm (0.469 inch)
Table 1
New Parts Changes    
Model     Rear Oil Cooler Bonnet     Bolt     New Boss    
793C D HAA     6I-3524     0S-1585     8B-9725    
994, 784, 785, 789     1W-4935     0S-1585     8B-9725    
Table 2
New Parts Changes    
Model     Old Front Oil Cooler Bonnet     Old Bracket     New Front Oil Cooler Bonnet     New Bracket     New Bolt     New Boss    
All     7N-4939     7N-4940     278-0539     278-0540     9X-8873     8B-9725    
Table 3
Effective Engine Serial Numbers    
Serial Numbers    
S/N:99W03570-UP    
S/N:96Z00939-UP    
S/N:54Z01209-UP    
S/N:7YG02241-UP    
S/N:4WJ01341-UP    
S/N:2PK01635-UP    
S/N:2GR07837-UP    
S/N:8BR01720-UP    
S/N:7TR02180-UP    
S/N:8WM01445-UP