Genuine Buick Century Rocker Arm

Buick Century Rocker Arm Parts Questions & Answers

• Arm, Valve Rocker Arm Light
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  Q: How to remove and install rocker arms on various engines?

  A: The valve covers are first removed to disassemble 305 and 350 Chevrolet as well as 301 Pontiac engines. Remove the rocker arm nut and ball, then take away the rocker arm from the rocker stud. In order to maintain the assembly in its original form mount all the rocker arms together on the same stud. Next, remove the pushrod from bore making certain that it returns with same end in block. To replace, perform removal steps conversely and adjust Pontiac engines' rocker ball retaining nut up to 20 ft.lbs (26 Nm). On Chevy engines, start nut onto stud and set valves according. For 263 (Diesel), 307, 350 (Gas and Diesel), and 403 Oldsmobile engines, start by removing valve covers. Each pair of rocker arms are taken out by first removing two bolts that keep the pivot attached to head for every cylinder; this procedure is repeated twice for other pairs of rockers arms so that for proper reassembly all should be kept in order. Ensure that lifters are off cam lobe and valves are closed before installing rocker arms. Attach remote starter or have an assistant bump engine over until valves close for each cylinder. With valves closed install paired rocker arms lubricating all pivot and wear points between them with white grease before installation. Finally torque retaining bolts to 25 ft lbs (32 Nm) then put back valve covers with new gaskets.
• Arm, Valve Rocker Arm Right
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  Q: How to remove and install rocker arms and rocker arm shaft assembly?

  A: First, remove the rocker arm covers, then the rocker arm shaft assembly bolts and finally the rocker arm shaft assembly. The nylon arm retainers have to be removed in order to get the rocker arms off the shaft. With a pair of pliers, this can be done or they can be broken by hitting them below their head with a chisel. After that, take out the rocker arms from the shaft making sure they are put in order. Each rock arm also has an external rib which points away from between each pair of rocker arms up to the one at each end closest to its respective bolt on the opposite side of a valve cover. If you are installing new rocker arms, be aware that replacement units would have R or L on them indicating right or left side installation only and they cannot be interchanged. Fit on oil-lubed shaft then install it back onto both ends and tighten nuts to 25 ft lbs (32 Nm). In case you should decide on installing new retainer using hammer and drift 1/2 inch diameter or bigger.