Vehicles after change point in 1982 REAMING OUT VALVE GUIDE - Valve Removed - Ream out valve guide and install a valve with a larger stem diameter "S"*, if there is excessive play between the valve guide and valve stem - see 11 12 595. That valve seat must also be machined in conjunction eith this step - see 11 12 607. Press guide pas (1) on to valve seat and ream out valve guide beginning from the combustion end - turn down reamer once. 11 12 595 11 12 607 * See Specifications |