B3.9 and B5.9 Series Engines
Section 7 - Lubricating Oil System - Group 07
NOTE: The back plate on the pump seats against the
bottom of the bore in the cylinder block. When the lubri-
cating oil pump is correctly installed, the flange on the
lubricating oil pump will not touch the cylinder block.
NOTE: Be sure the gear backlash is correct if installing a
new lubricating oil pump.
Measure the gear backlash.
NOTE: If the adjoining gear moves when you measure the
backlash, the reading will be incorrect.
Gear Cover - Installation
Lubricate the front gear train with clean lubricating engine
The seal lip and the sealing surface on the crankshaft
must be free from all oil residue to prevent seal leaks.
Thoroughly clean the front seal area of the crankshaft.
NOTE: Always replace the front seal when removing and
installing the gear cover.