FILM-INFORMATION 1717626 - Caterpillar

Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.
Note: These changes apply only to the machine serial numbers listed above if a standard stroke engine is installed. These changes do not apply to machines with High Displacement (HD) engines. Engine serial prefix S/N:7TR is for standard stroke engines only.These changes are effective with engine serial number S/N:7TR3717-UP.The following changes are adaptable to the products within the listed serial numbers, and are effective with all products after the listed serial numbers.The new cylinder pack components are direct replacements for the previous cylinder packs components. If replacement of the previous cylinder packs occurs, the replacement with the new cylinder packs must be done for every cylinder in the engine. The new cylinder packs are not compatible to be run with the previous cylinder packs in the same engine.Table 1 contains the new and previous part numbers for the cylinder packs.
Table 1
New Part Number Part Name Previous Part Number Qty
20R-6618 Cylinder Pack As 10R-4343 1
448-3651 Piston Ring (Intermediate) 144-5695 1
454-9920 Cylinder Liner 211-7826 1
481-5615 Piston 299-5204 1
488-9888 Piston Ring (Top) 509-6461 1
516-0827 Liner Seal 352-6061 1
516-1856 Sleeve N/A 1 Table 2 contains the part numbers for the other cylinder pack components that have not been replaced with a new part number.
Table 2
Part Number Part Name Qty
223-6361 Piston Ring (OIL CONTROL) 1
263-8955 Piston Pin 1
253-1238 Pin Retainer 2
193-3282 Retainer As (PISTON COOLING JET) 1
204-5447 Piston Cooling Jet As 1
144-0725 Connecting Rod 1
Illustration 1 g06330714
(1) New piston ring groove
(2) Previous piston ring groove
Illustration 2 g06023610
(1) Anti-Polishing SleeveNote: Anti-polishing sleeve (1) must be installed before installation of the cylinder head or related components.The new 485-8003 Tool As will work with cuff and non-cuffed cylinder liners. The tool is designed to seat inside the cuff counterbore, eliminating the need for use of the 471-6593 Tool As.