Using dial indicator, check oil pump drive shaft gear thrust clearance when moving gear back and forth.
See Fig. 16 . Standard oil pump drive shaft gear thrust clearance is .0016-.0063" (.040-.160 mm) with
maximum thrust clearance of .0118" (.300 mm). Replace oil pump drive shaft gear and or/timing chain
cover if thrust clearance exceeds maximum specification.
Thanks guys that key reference is the crank that faces down and lines up gears for top dead center alignment
I couldn't find any arrow in FSM or Chilton books.
Anyway it's easy to get to if something needs changed later.