1942 - 1947 Chevrolet Shop Manual



	*6-25*



	Fig. 53—Layout of Rear Rocker Arm and Shaft Parts

	One end of the shaft is plugged and each shaft must be installed on the cylinder head with the open end toward the center. A stamped steel baffle is pressed into the open end of the rear shaft. This baffle must be installed in the vertical or up-and-down position. The two shafts are connected for oil feed at the center by a brass oil connector which slips over the end of each shaft. When removing or replacing the rocker arm and shaft assemblies they must be handled as a complete unit. RECONDITIONING VALVES There is no operation, in the maintenance of an automobile more important than the valve reconditioning operation from the standpoint of engine economy and performance. Extreme care should therefore be used whenever valves are reconditioned to maintain factory limits and clearances, as only by maintaining these limits and clearances can one expect good engine economy and performance. Cylinder Head Holding Fixture The exhaust valve heads are located in pockets	in the cylinder head, and this construction necessitates the use of a cylinder head holding fixture combined with a valve spring compressor Fig. 55, for the removal of valve springs and the reconditioning of valves.

		Fig. 55—Cylinder Head Holding Fixture After the cylinder head has been removed from the engine, and all parts disassembled from it, all carbon should be thoroughly cleaned from the combustion chamber, valve ports and guides, and the head thoroughly washed.



	Fig. 54—Valve Rocker Arms Correctly Assembled