B3.9 and B5.9 Series Engines
A/C Cylinder Head (QE Models) (012-104)
Section 12 - Compressed Air System - Group 12
Lubricate the unloader screw threads and underhead with
clean lubricating engine oil before installation.
NOTE: The two unloader body screws must not be used
to attach any brackets.
Assemble the unloader components, and attach the
unloader assembly to the valve plate with the four capscrews
NOTE: The longer capscrews are used to mount the mani-
Install the exhaust valve over the post in the valve plate.
Apply a thin coating of anti-seize compound to the inside
circumference of the exhaust valve retainer.