Cadillac 1618802 Arm

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Disconnect the negative battery cable and remove the air cleaner and AIR management valve.

To remove and install the rocker arms on 4.5L and 4.9L engines, start by disconnecting the negative battery cable and removing the air cleaner and AIR management valve. Remove the MAP hose from the throttle body and the right side spark plug wires and conduit. Remove the fuel vapor canister pipe bracket and drain the cooling system. Remove the heater hose and brake booster vacuum hose from the intake manifold. Then, remove the rocker arm cover, gasket seals, rocker arms, and rocker arm support. Clean the gasket mounting surfaces and inspect for wear or damage. To install, lubricate the parts with clean engine oil and use a new gasket with RTV sealant. Install the rocker arms and pivots, tighten the pivot bolts, and place each pushrod into the rocker arm seat. Install the rocker arm support, retaining nuts and bolts, rocker arm cover seals, and rocker arm cover. Connect the brake booster vacuum hose and spark plug wires. Install the air management and bracket assembly, replace the heater hose and air cleaner assembly, and connect the negative battery cable. Finally, start the engine and check for leaks. For the left side, follow similar steps, including removing the power steering pump, belt tensioner, and bracket assembly. Replace the accessory drive belt and reinstall the power steering pump, throttle return spring, PCV valve, air cleaner, and negative battery cable.