2007 ISUZU KB P190 Suction control valve

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ISUZU KB P190 2007 Workshop Repair Manual Engine Mechanical – V6 Page 6A1–25
Page 6A1–25
1.5 Engine Lubrication System
Lubrication Description
A structural diecast aluminium oil pan is fitted that incorporates an oil suction pipe,

Engine Mechanical – V6 Page 6A1–25
Page 6A1–25
1.5 Engine Lubrication System
Lubrication Description
A structural diecast aluminium oil pan is fitted that incorporates an oil suction pipe, an oil deflector and an oil level
sensor. The oil suction pipe is bolted in to the oil pan and seals to the bottom of the cylinder block with a gasket. The oil
deflector is bolted to the upper portion of the oil pan and ensures oil supply is maintained under all conditions. The oil
level sensor is mounted thr ough the bottom of the oil pan.
A crankshaft driven gerotor oil pump is mounted to the front of the cylinder block. The pump, which incorporates an
internal pressure-relief valve, draws oil from the oil sucti on tube through the lower passage in the cylinder block. Oil is
then directed through an upper passage to the left-hand side of the cylinder block where the oil filter adapter is mounted.
The oil filter adapter incorporat es a top-access, cartridge style oil filter. The filter is accessed through a screw-on cap tha t
incorporates an oil bypass valve. The o il filter adapter housing incorporates a drain back control valve and a threaded oil
pressure sender. Oil flows through a lower passage within the oil filter adapter and through the o il filter cartridge. Filtered
oil travels back through the upper passage of the adapter and into the engine block.
Oil is then directed up and across the front of the cylinder block, through several drilled passages. These front passages
feed oil to each cylinder head, the passage for the main bearings and piston oil jets, the right-hand and left-hand
secondary idler sprockets and to t he primary timing chain tensioner.
Each cylinder head passage directs oil into oiling circuits for the stationary hydraulic la sh adjusters (SHLAs) and the
camshaft bearing journals. An additional passage in the cy linder head also directs oil to the secondary timing chain
tensioner.
The oil passage that supplies oil to the main bearings also s upplies oil to pressure actuated piston cooling oil jets. Each
oil jet is mounted between opposing cylinder bores and directs oil to the two bores to provide extra cooling and control
piston temperatures.
From the front passages, oil is directed to the front of the block where t he right-hand and left-hand intermediate drive
shaft sprockets and the primary timing chain tensioner are mounted. Each camshaft timing chain tensioner relies on a
gasket to maintain an oil rese rve after the engine is turned off. All camshaft timing chain tensioners incorporate a small
oil jet to supply an oil spray onto the camshaft timing chain components.
Oil returns to the oil pan, either through the camshaft timing chain area or through the drain back passages on the
outboard walls of the cylinder heads and cylinder block.

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

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ISUZU KB P190 2007 Workshop Repair Manual 8A-12 ELECTRICAL-BODY AND CHASSIS
ABBREVIATIONS
Abbreviation Meaning of abbreviation Abbreviation Meaning of abbreviation
A Ampere (S) kW Kilowatt
ABS Anti-lock brake system LH Left hand

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ISUZU KB P190 2007 Workshop Repair Manual ELECTRICAL-BODY AND CHASSIS 8A-621

No. Connector face No. Connector face
E44

Black
Vehicle speed sensor E53

NOT USED
E45

Gray
2W D-4W D switch E54

A/T term

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