Cadillac 14087014 Chain,Camshaft Timing

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To remove and install the timing chain and sprockets, begin by disconnecting the negative battery cable and removing the front cover. Take off the oil slinger from the crankshaft and rotate the engine to align the cam gear timing marks, ensuring the No. 1 cylinder is on the TDC of its compression stroke. From the camshaft, remove the camshaft thrust button and screw, and discard the thrust button. Slide out the cam gear, crankshaft sprocket, and timing chain as an assembly. To install, clean the gasket mounting surfaces and inspect all parts for wear or damage, replacing as necessary. Assemble the timing chain on the cam gear and crankshaft sprockets, align the timing marks on the sprockets to face each other, and align the dowel pin in the cam gear with the index hole in the sprocket; then slide the assembly onto the cam gear and install the sprocket-to-cam gear bolts, tightening it to 37 ft. lbs. Install the new thrust button and the oil slinger, followed by the front cover. Finally, connect the negative battery cable, refill the cooling system, start the engine, allow it to reach normal operating temperatures, and check for leaks.

Before installing the timing chain cover, use a gasket scraper to remove old gasket material and sealant. Clean the cover and block sealing surfaces with lacquer thinner or acetone.

Install the timing chain cover using a new rubber seal.

Gasket removal and surface cleaning are critical, along with checks and corrections of the cover flange if needed. Proper alignment of keyways is emphasized when installing new parts like the crankshaft sprocket, camshaft sprocket, and vibration damper. Lubrication with engine oil is necessary, and sealant application is required for specific engine types.

Most engines use a large bolt threaded into the crankshaft's nose to secure the vibration damper. It should be removed with a puller that exerts force solely on the damper hub to avoid damage.

Disconnect the negative battery cable.

To separate the timing chain cover from the block, you should remove the cover bolts, breaking the gasket seal if necessary.

Use a gasket scraper to remove any old gasket material and clean the sealing surfaces.

The number four piston should be at top dead center (TDC) on the compression stroke before proceeding with timing chain cover removal.

The number four piston should be at top dead center (TDC) on the compression stroke before proceeding with timing chain cover removal.

Inspect the timing chain and sprockets for wear and damage. If necessary, replace them.