CENTRAL + LOWER LINES 8T6477 - Caterpillar

(1) Bypass valve: Fuel pressure at FULL LOAD ... 30 5 psi(205 35 kPa)(2) 4N605 Spring for bypass valve: Length under test force ... .880 in.(22.35 mm)Test force ... 3.53 .18 lb.(15.3 0.80 N)Free length after test ... 1.729 in.(43.92 mm)Outside diameter ... .527 in.(13.39 mm)(3) Thickness of gears (new) ... .3736 .0003 in.(9.489 0.008 mm) Depth of counterbore (new) ... .3750 .0005 in.(9.525 0.013 mm)(4) Diameter of shaft for idler gear ... .4914 .0003 in.(12.482 0.008 mm) Bore in idler gear ... .4926 .0003 in.(12.512 0.008 mm)(5) Put a thin layer of 5S1454 Sealing Compound on the outside diameter of the seals before installation. Remove the extra sealing compound after assembly.(6) Install inner seal from outside edge of body assembly a distance of ... .453 .010 in.(11.51 0.25 mm)(7) Install outside seal from outside edge of body assembly to a distance of ... .030 .010 in.(0.76 0.25 mm)