900 L4-1985cc 2.0L DOHC Turbo EFI (1985)
Oil Supply Pipes For Hydraulic Cam Followers Being Removed On Mid 1988 And Earlier Cars
4. Remove the external oil supply pipes from the cylinder head, if applicable.
Caution: Do not twist the pipes when removing them. This may damage the sealing surfaces between the pipes and the fittings.
Note: Beginning in mid-1988, a new cylinder head was used and the external oil supply pipes were discontinued.
Camshaft Timing Chain Tensioner Being Removed
5. Working from the side of the cylinder head, remove the camshaft timing chain tensioner.
6. Carefully unbolt the camshaft bearing caps evenly until all valve spring pressure is relieved. Remove the camshaft by lifting the chain off the
sprocket.
Caution: Do not rotate the engine if the camshaft timing chain is removed from either camshaft. The pistons can hit the valves and damage them.
Note: If removing both camshafts, insert a stiff wire through the chain to prevent it from falling into the timing chain cover area.
Installation is the reverse of removal. If removed, be sure to refit the hydraulic cam followers in their original positions. Make sure the flywheel is set
at the TDC mark. Install the camshafts such that the timing marks are correctly aligned before tightening the camshaft bearing caps. When installing
the camshaft bearing caps, make sure all numbers on the caps align with their numbers on the cylinder head, if applicable. Install the black camshaft
bearing cap bolts on the spark plug side of the cap. Make sure the oil spray bar is correctly aligned with the bar's fittings.
