3.5. Lubrication System
The engine is equipped with force-feed lubrication.
The pressure is produced by a gear pump whose drive gear is in direct mesh with the crank-
shaft gear at the front end of cylinder block.
The oil pump draws the oil from the oil sump and delivers it through the oil cooler and oil filter
to the main distributor gallery and from there to the main bearings, big-end bearings and
camshaft bearings as well as to the small-end bearings and the rocker arms.
The injection pump and the turbocharger are also connected to the engine lubricating system.
The cylinder walls and timing gears are splash-lubricated.
Each cylinder has an oil jet provided for cooling the underside of the pistons.
The lube oil is cleaned in a full-flow oil filter.
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D1146/D1146T/ P086TI/PU086/PU086T
3.5.1. Oil cooler
An oil cooler is provided between the oil filter and the cylinder block. This cooler is a flat tube
type with turbulence inserts and operated by the coolant.
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