SPOOL 9W0626 - Caterpillar

Do not use an air wrench to tighten the housing assembly.
Difference in pressure at which the bypass valve will open ... 248 21 kPa (36 3 psi)(1) 9M1986 Spring for the bypass valve Length under test force ... 25.4 mm (1.00 in)Test force ... 111 9 N (25 2.0 lb)Free length after test ... 47.2 mm (1.86 in)Outside diameter ... 12.7 mm (.50 in)(2) 3S8652 Spring for the filter element Length under test force ... 25.4 mm (1.00 in)Test force ... 141 to 166 N (32 to 37 lb)Free length after test ... 96.5 mm (3.80 in)Outside diameter ... 35.1 mm (1.38 in)