CYLINDER HEAD AS 2051271 - Caterpillar

Firing order (injection sequence) ... 1,2,7,3,4,5,6,8Injection timing BTC (before top center) ... 16 1 degreeTorque for the nuts that hold the fuel lines (Use 5P0144 Fuel Line Socket) ... 40 7 N m (30 5 lb ft) (1) Bore in the rear bearing for the camshaft (new) ... 60.325 0.013 mm (2.3750 .0005 in) Diameter of rear bearing surface (journal) of the camshaft (new) ... 60.249 0.013 mm (2.3720 .0005 in)Maximum permissible clearance between the bearing and the camshaft bearing surface (journal) (worn) ... 0.15 mm (.006 in)Install rear camshaft bearing from the end of the housing to a depth of ... 0.43 0.13 mm (.017 .005 in)(2) Torque for screws that hold sleeve control levers ... 3.0 0.5 N m (.27 4 lb in)(3) Bore in the housing for the fuel control shaft (new) ... 8.999 0.013 mm (.3543 .0005 in) Diameter of sleeve control shaft (new) ... 8.966 0.008 mm (.3530 .0003 in)Maximum permissible clearance between the bore in the housing and the sleeve control shaft (worn) ... 0.08 mm (.003 in)(4) Endplay for camshaft with sleeve installed (new) ... 0.58 0.46 mm (.023 .018 in) When installing sleeve on end of camshaft, support the camshaft to prevent damage to parts inside of injection pump and governor housing.(5) Bore in the front bearing for the camshaft (new) ... 25.413 0.013 mm (1.0005 .0005 in) Diameter of front bearing surface (journal) of the camshaft (new) ... 25.375 0.013 mm (.9990 .0005 in)Maximum permissible clearance between the bearing and the camshaft bearing surface (journal) (worn) ... 0.10 mm (.004 in)Front camshaft bearing is installed flush with the end of the housing. (6) Torque for bushing ... 82 7 N m (60 5 lb ft)(7) Crossover levers. For adjustment of crossover levers, see the Testing & Adjusting Section.(8) Torque for screws that hold crossover levers ... 2.70 0.25 N m (24 2 lb in)(9 and 10) Fuel control shafts.(11) Dowel pin (linkage between crossover levers).(12) Distance guide pin extends into bore ... 1.20 0.10 mm (.047 .004 in) Install guide pin with slot toward the top of the lifter bore.(13) 9N5862 Spring for injection pump: Length under test force ... 35.13 mm (1.383 in)Test force ... 56.7 6.6 N (12.4 1.4 lb)Free length after test ... 40.80 mm (1.606 in)Outside diameter ... 18.49 mm (.728 in)A. Reverse Flow Check Valve (RFC).B. Orificed Delivery Valve (ODV).C. Orificed Delivery Valve-Lo Volume (ODV).D. Orificed Reverse Flow Check Valve (ORFC).