PISTON GP 9N5408 - Caterpillar

This unit is for engines with 8° before TC (top center) static timing. Serial Numbers: 65B7059-UP. This unit moves forward (advances) the timing 11° from low idle to full load rpm.(1) 4S9421 Spring: Length under test force ... 2.15 in.(54.61 mm)Test force ... 30.8 to 34.0 lb.(137.6 to 152.0 N)Free length after test ... 2.78 in.(70.61 mm)Outside diameter ... .940 in.(23.88 mm)(2) Distance between top face of nut and center of pin hole ... .156 in.(3.96 mm)(3) 6N3578 Spring: Length under test force ... 1.45 in.(36.83 mm)Test force ... .55 .04 lb.(2.45 0.18 N)Free length after test ... 1.59 in.(40.39 mm)Outside diameter ... .528 in.(13.41 mm)(4) Diameter of shaft ... 1.8730 .0005 in.(47.574 0.013 mm)(5) Distance between bottom face of nut and piston ... 1.863 in.(47.32 mm)