Camshaft Removal
- With engine front cover removed, remove fuel pump and distributor. Remove rocker arm assembly and push rods as previously outlined. Remove tappet cover plates from side of crankcase and remove tappets.
- Remove camshaft thrust plate bolts and carefully remove camshaft to avoid damaging camshaft lobes or bearings. Check camshaft runout with a dial indicator placed on number two bearing journal. If runout exceeds 0.002", straighten or replace camshaft.
- Check camshaft lobe height. If lobe height is less than 1.498" (intake) and 1.493" (exhaust), replace camshaft. Pitted or scored lobes can be smoothed with an oil stone.
- Check camshaft journals for taper or out-of-round. If taper or out-of-round exceeds 0.002", camshaft journals must be ground to next undersize and bearings of appropriate size installed.
- 6) Bearings of 0.005", 0.010" and 0.020" undersizes are available. Check clearance between bearings and camshaft journals. If Clearance exceeds 0.004", replace camshaft bearings.
- 7) To replace camshaft bearings, remove expansion plug from rear camshaft bearing hole. Remove bearings and install new bearings of appropriate size with a suitable bearing replacement tool (09215-40010). When installing bearings, make sure oil holes in bearings align with oil holes in crankcase.
- 8) If undersize bearings are installed, bearings will have to be reamed to correct clearance. Install new expansion plug.
- 9) Lubricate camshaft thoroughly and install in crankcase. Position camshaft gear and crankshaft gear correctly. See VALVE TIMING . Reverse removal procedure to install remaining components.