Acura 14111-PR4-000 Camshaft, In.

To check camshaft endplay, install the camshaft and secure it with the caps, then mount a dial indicator on the cylinder head with the gauge plunger touching the nose of the camshaft. Use a large screwdriver as a lever to move the camshaft forward and backward, noting the dial indicator reading, and compare it with the specified endplay. If the reading is higher, replace worn parts. For camshaft runout, support the camshaft with V-blocks and set up a dial indicator against the center bearing journal, rotating the camshaft to note the runout and compare it to specifications, replacing the camshaft if it exceeds limits. For B18B1, B20B4, and B20Z2 engines, remove the distributor and valve cover, loosen valve adjusting screws, position the number one piston at Top Dead Center, and remove the timing belt and camshaft sprockets. Check camshaft bearing caps for arrow marks, number them, and label with I for intake or E for exhaust. Loosen camshaft bearing cap bolts gradually to relieve spring pressure, then lift the camshafts and rocker arms, labeling them for reinstallation. Clean and inspect parts for wear, checking rocker arm faces, shafts, and bearing surfaces for damage. Measure cam lobe height and check bearing journals for scoring. Use Plastigage to check oil clearance, comparing the width of the crushed material to the scale provided, replacing worn parts as necessary. Lubricate components with assembly lube or engine oil before reinstalling rocker arms in their original positions, coating cam lobes and journals with lubricant, and applying anaerobic sealant to bearing cap contact surfaces. Install the sealing plug in the exhaust camshaft journal, then adjust valve clearance and ignition timing before running the engine to check for leaks and proper operation. For B16A2, B18C1, and B18C5 engines, follow similar removal and inspection steps, ensuring to keep rocker arm sets together and aligning oil control orifices during reinstallation. After lubricating components and installing new oil seals, apply sealant to bearing caps and tighten them in the correct sequence, completing the installation and adjustments as previously described.

Inspect the camshaft bearing journals and caps for scoring and wear, replacing the cylinder head if worn. Check oil clearance with Plastigage, replacing the camshaft if any journal is out of specification. Examine the cam lobes for wear, checking for score marks and uneven wear, and measure the cam lobe height with a micrometer, replacing the camshaft if wear is indicated. Also, inspect the rocker arms for wear and ensure proper lubrication to prevent future issues.