LEVER 3W4078 - Caterpillar

Illustration 1 g02539717
(1) Rocker arm
(5) Camshaft
(7) Valve bridge
(3) Adjusting screw
Table 1
Specification for 148-7482 Fuel Pump and Valve Mechanism, 343-4437 Fuel Pump and Valve Mechanism, 343-4438 Fuel Pump and Valve Mechanism and 266-3699 Fuel Pump and Valve Mechanism.
Item Qty Part Specification Description
2 1 276-5317 Nut Torque to 30 7 N m (265 60 lb in)
4 1 307-8322 Rocker Shaft Assembly Lubricate with clean engine oil before assembly.
Diameter of a new rocker shaft assembly is 40.000 0.010 mm (1.5748 0.0004 inch).
Bore in the rocker arm for rocker shaft assembly is 40.065 0.015 mm (1.5774 0.0006 inch).
6 - - Valve lash setting:
Inlet valve is 0.38 0.08 mm (0.015 0.003 inch).
Exhaust valve is 0.76 0.08 mm (0.030 0.003 inch).
For engines that are equipped with variable valve actuators, refer to Specifications , "Variable valve Actuator" for information on installation of the rocker arm assembly.
For engines that are equipped with CAT Compression Brakes, refer to Specifications , "CAT Compression Brake" for the correct procedure on installation of the rocker arm assembly.