FRONT IDLER GROUP 1P1952 - Caterpillar

Pressure of fuel to injection pump ... 25 to 32 psi(170 to 220 kPa)(1) Bore of bearing (new) ... .4953 .0003 in.(12.581 0.008 mm)(2) Depth of bore in body (new) ... .3750 .0003 in.(9.525 0.008 mm)Thickness of gear (new) ... .3730 .0003 in.(9.474 0.008 mm)(3) Torque for nut ... 22 5 lb. ft.(28 7 N m)(4) Clearance between gear and cover (new) ... .0014 to .0026 in.(0.036 to 0.066 mm)Maximum permissible clearance between gear and cover (worn) ... .0035 in.(0.089 mm)(5) Shaft diameter (new) ... .4937 .0001 in.(12.540 0.003 mm)Bore in shaft bearing (new) ... .4953 .0003 in.(12.581 0.008 mm)Maximum permissible clearance between shaft and bearing (worn) ... .003 in.(0.08 mm)(6) 8M3210 Spring:Length under test force ... 1.212 in.(30.78 mm)Test force ... 5.36 .13 lb.(23.8 0.58 N)Free length after test ... 1.82 in.(46.2 mm)Outside diameter ... .41 in.(10.4 mm)(7) Torque for plug when used with gasket:2A1913 Gasket (copper) ... 110 15 lb. ft.(149 20 N m)4N7465 Gasket (plastic) ... 27 3 lb. ft.(38 4 N m) Put a thin layer of 8S6747 Sealer on face of pump body before installing pump cover. Do not let any of 8S6747 Sealer get into the pump.