PISTON KIT 2389306 - Caterpillar

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(1) 7I-5075 Tube As
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7I-5075 Tube As with two 8D-3508 Bosses Two 8X-7422 Bosses have been replaced by two 8D-3508 Bosses on the 7I-5075 Tube As. The two new bosses have been moved 40 2 mm (1.57 0.10 inch) toward the ends of the tube assembly.The updated 7I-5075 Tube As is effective on the following machines:
789C (S/N: 2BW887-UP)The updated 7I-5075 Tube As is adaptable to the following machines:
789C (S/N: 2BW704-886)Note: Inspect the machines for interference before replacing the tube assembly or modifying the tube assembly. If interference exists, the tube assembly must be replaced or modified. Use the following procedure to modify the tube assembly.
Remove the 7I-5075 Tube As from the frame.
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7I-5075 Tube As (1) Two 8X-7422 Bosses
Remove the two outer bosses (1) from the Tube As. Smooth the areas on the tube assembly by using a sander.
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7I-5075 Tube As (A) 106.0 2.0 mm (4.17 0.08 inch) (W1) 3.0 mm (0.12 inch) fillet weld (2) 8D-3508 Bosses
Weld two 8D-3508 Bosses (2) to the tube assembly.
Repaint the exposed surfaces on the tube assembly. Ensure that the paint does not get into the threads of the bosses.
Install the tube assembly into the frame.