PISTON 2162264 - Caterpillar

Locations of the filled-in ends on the new gasket. 7E6000 Gasket for 3406B Engine shown. The added material shown at both ends also makes it possible to identify (from the outside of the engine) the new 7E7308/7E7312 Gaskets from the former 2W7984/2W7985 Gaskets, respectively....This gasket is NOT coated on the cylinder head side. It DOES have a single layer of black Teflon® (PTFE) on the spacer plate side. The PTFE prevents sticking to the aluminum spacer plate.
Adaptable To: The new 7E7308 Gasket is a direct replacement for the former 2W7984 Gasket which has been canceled. The new 7E7308 Gasket is effective with the following engine serial numbers. 3408B Vehicular Engine: 48W293833408B Truck Engine: 28V48373408 Industrial Engine: 67U132263408B Industrial Engine: 6NB7413408B Generator Set Engine: 78Z35923408B Marine Engine: 99U6595The new 7E7312 Gasket is a direct replacement for the former 2W7985 Gasket which has been canceled. The new 7E7312 Gasket is effective with the following engine serial numbers.
3412 Vehicular Engine: 73W112803412 Industrial Engine: 38S146233412 Industrial Engine: 7DB4983412 Marine Engine: 60M40563412 Generator Set Engine: 81Z9356 Any time the new head gasket is to be installed, refer to the following topics so that maximum life can be obtained from the new gasket, head, block, spacer plate, and engine block.Liner Projection and Machining the Block and/or Head
Do NOT adjust the liner projection above the block if it measures in the range of 0.03 to 0.15 mm (.001 to .006"). ALSO, make sure that the differences between all four measurements at any one cylinder do not exceed 0.05 mm (.002"). AND, the difference between the average projection of two liners next to each other must not exceed 0.05 mm (.002"). These specifications are in the Service Manuals for these engines.
Wear or erosion under the liner flange will require use of a stainless steel insert. Read the reference article about the new liner seat insert. The head and/or block surfaces may have been damaged if the engine was operated extensively after a head gasket failure.
To prevent entry of debris into the engine when cleaning excess Teflon from the block and head, use a clean Scotchbrite® pad only. Read the second reference article which gives additional guidelines on cleaning, inspection, and repair considerations. Be careful with a rotary pad to be sure the flatness of the block and/or head is not changed.
The maximum amount of material that can be machined from the top deck of the block is controlled by the minimum dimension from the crankshaft centerline to the top deck on the block. This minimum is 425.02 mm (16.733"), and is also in the Service Manuals. Use the 6V7840 Deck Checking Tool Group to measure this dimension. Special Instruction SEHS8187 explains the use of this device.
There is also a minimum allowable thickness for the head. This is 111.51 mm (4.390"), and limits the amount of material that can be taken off the bottom of the head.
Retightening Head Bolts
After installing the new 7E7308/7E7312 Gaskets, retightening the head after a road test or dynamometer test, or at the