How to align the two points on the 465 camshaft?
2 Answers
465 camshaft two-point alignment steps are as follows: 1. Rotate the crankshaft to position the No.1 cylinder piston at the compression top dead center, aligning the timing marks on the camshaft and crankshaft sprockets. 2. When the No.4 cylinder piston is at top dead center, the timing marks should align, with both the intake and exhaust valves of the No.4 cylinder in the closed position. 3. Remove the bolt from the camshaft sprocket, then take off the timing chain and camshaft sprocket. 4. Install the timing chain onto the camshaft sprocket, secure the sprocket so the chain hangs down, and align the timing marks on the camshaft and crankshaft sprockets. Align the locating pin holes on the sprocket with those on the camshaft, then mount the sprocket onto the camshaft. 5. Lubricate the timing sprocket and chain with engine oil, rotate the crankshaft two full turns, and check if the engine timing marks are aligned. If the timing marks do not align, repeat the above steps to redo the operation.
I've been repairing cars for years, and I'm always extra careful when dealing with those two points on the 465 camshaft. These two points are actually the marks on the sprocket, and if they're not aligned properly, the car will have serious starting issues. I usually let the engine come to a complete stop first, then locate the top dead center position of cylinder 1, aligning the pointer mark on the crankshaft with it. As for the two points on the camshaft sprocket, one should align with the notch on the cylinder head, and the other with the timing chain fixing point. Use a wrench to slowly rotate the camshaft—don't apply too much force, or you might damage the gears. If the points are aligned correctly, reinstalling the chain will go much smoother. But don't forget to check the gaps; too loose or too tight will affect the timing. Once, I helped a friend adjust his, and he didn't align the points carefully, resulting in the valves hitting the pistons and costing a lot to fix. This job requires patience and the right tools, like special pliers—don't cut corners. In short, clean the engine area before starting, take it step by step, and ensure safety and efficiency.
