The lubrication system is a full-flow, filter pumping
system.
The engine oil that accumulates in the oil pan is
drawn and discharged by the oil pump. After its pres-
sure is regulated by the relief valve, the oil passes
through the oil filter. Then, it flows from the oil pas-
sage in the cylinder block to the individual crankshaft
journals and the cylinder head.

After the oil is pumped to the individual crankshaft
journals, it passes through a passage in the crank-
shaft and is fed to the pins. After the oil is pumped to
the cylinder head, it flows to the camshaft journals
and the engine oil control valves.

OIL PASSAGE

M2120000200406

AK703250

Engine oil pressure switch

Turbocharger

Oil screen

Oil pan

Relief valve

V.V.T. sprocket

Engine oil control valve

Oil jet

Oil pump

Oil filter

Oil filter bracket

Cylinder block oil passage

Crankshaft journal

Camshaft journal

Crankshaft pin

Cylinder block oil passage
(main gallery)

Cylinder head oil passage

OIL FILTER

TSB Revision

ENGINE LUBRICATION

12-3

OIL FILTER

M2120005000311

The oil filter is installed to the bracket placed at the
left side of ladder frame.

OIL PAN

M2120006000336

The oil pan is made of high damping sheet metal and contains
an oil sump in the forward area of the engine.
FIPG (Formed-In-Place Gasket) is used to seal between the oil
pan and the ladder frame.

AK601225AC

Oil filter

Element

Item

Specifications

Filtering system

Full-flow filtering, filter
paper type

Filtering area cm

(in2)

870 (134.8)

Rated flow volume L/min
dm

(qt)

30 (32)

AK703251AC

Gasket

Drain plug

Engine front

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