SHAFT ASSEM. 3S8174 - Caterpillar

Problem
Certain 0R1570, 0R1571, 0R1572, 0R1772, 0R2413, 0R2693, 0R2694, 0R2861, and 0R2862 Cylinder Kits in parts stock, for use in the 3400 Family of Engines, need to have the existing 8N7295 Retainers replaced with a new 7E5665 Retainer.
Parts Needed
2 - 7E5665 Retainer-Piston Pin (per reworked cylinder kit)Action Required
Inspect all 0R1570, 0R1571, 0R1572, 0R1772, 0R2413, 0R2693, 0R2694, 0R2861, and 0R2862 Cylinder Kits in parts stock with a date code stamped on the packing box label prior to 099168 (09 = 9th month, 91 = year, and 68 is the factory) to see which piston pin retainer is installed. (See the illustration that follows for retainer identification)
Pull the piston and rod assembly out of the liner just far enough to expose the piston pin and retainers.
Do not pull the piston completely out the liner so that the rings are visible.
New 7E5665 Piston Pin Retainer (1). Former 8N7295 Piston Pin Retainer (2).Use a suitable tool to remove the existing 8N7295 Retainers and install the new 7E5665 Retainers. Refer to the article in the October 1991 Engine News, October 1991 Truck Engine News, or the October 14, 1991 Service Magazine.
Make sure that the retainers are installed with the opening in the retainer oriented correctly.
Complete the assembly of the kits by pushing the pistons back into the liner to their original position.
Reworked kits should be returned to parts stock with a red dot on their packing box label to indicate that it they have been reworked.
Service Claim Allowances
This is a .1-hour job per cylinder kit reworked. No inspection time will be allowed.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.