780 V6-2849cc 2.8L SOHC B280F (1987)
Put the distributor shaft extension (1) in a safe place.
^ Cover hole to oil sump with paper (arrow in picture).
Loosen right camshaft centre bolt
^ 10 mm socket screw.
If necessary, use a screwdriver to lock camshaft in place.
^ (Use a screwdriver with a round shaft to prevent damage to valve cover gasket surfaces).
Loosen timing gear chains
Turn each chain tensioner 1/4 turn counter-clockwise and press in piston.