HEAD GP-CYL BSC 20R6518 - Caterpillar

GUIDELINE FOR REUSABLE PARTS; VALVES AND VALVE SPRINGS, Form SEBF8002 and SEBF8034 have the procedure and specifications necessary for checking used valves and valve springs.(1) Springs for valves (new): 9L9190, 9N3617, 9N3387Length under test force ... 1.655 in.(42.04 mm)Test force ... 50 5 lb.(220 22 N)Use again minimum load at length under test force ... 35 lb.(155 N)Length of spring at valve open position ... 1.167 in.(29.64 mm)Use again minimum load at valve open position ... 154.5 lb.(687 N)Free length after test ... 1.854 in.(47.09 mm)Outside diameter ... 1.440 in.(36.58 mm)Spring must not be bent more than ... .065 in.(1.65 mm)