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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Nissan Patrol (from 1988 to 1997, the year of issue)

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Nissan Patrol
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Patrol
Introduction
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Adjustment and routine maintenance
Engine
Engine 4.2 l
Removing and installing engine
Removal, dismantling, checking the condition and installation of rocker arm assembly and rod pushers
Removal and installation of the inlet pipeline
Removing and installing exhaust manifold
Maintenance of the cylinder head
Removal, check the condition and maintenance of the timing components (chain and sprockets)
Removal, check of a condition and installation of a camshaft and pushers
Removing and installing oil pan and oil pump maslozabornika
Service oil pump
Replacement seals crankshaft
Service connecting rod and piston assembly and the cylinder bores
Service crankshaft and main bearings
Service flywheel / drive disc
Removal and installation of support of the power unit
Engine 3.0 l
System of cooling, heating and air conditioning
The power supply system and exhaust
Systems for reducing emissions
Systems of an electric motor
Transmission
Clutch
Brakes
The front and rear axles, chassis and steering
Body
Onboard electric
 


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Engine 4.2 l



Engine 4.2 l

general information
Engine refers to the 6-cylinder in-line units with overhead valve mechanism (ohv), a cross-flow cylinder head made of aluminum alloy, cast iron crankcase.

Crankshaft is set in seven main bearings, six of which are persistent, responsible for the amount of axial play of the shaft.

Pistons are equipped with upper and lower compression ring and 3-cell scraper ring.
Piston fingers have floating landing in heads of rods and pistons tightness tucked in. Securing finger retaining rings provided.

The camshaft rotates in seven bearings and is equipped with built-in distributor drive gear. Camshaft sprockets mounted on its front end. Camshaft drive is carried out from the crankshaft via a chain drive (with chain). Speed - half relative to that of the crankshaft.

By the second circuit is driven by the crankshaft the oil pump.
Grease the timing gears and chains is through a special nozzle is mounted in front of the cylinder block.

The drive is carried out by solid valve lifters, pushrods and cast rods rocker. Rocker put on a common axis and are lubricated via the hole in its pedestals.

Replaceable valve guides pressed into the cylinder head and equipped with valve stem seals, prevent against excessive supply the required amount of oil.

A rotary type oil pump is installed in front of the cylinder block. The cam is located at the rear of the oil pump is driven by the fuel pump. The oil pressure is maintained at a desired level by the spring-loaded pressure relief valve disposed within the oil pump housing.

Crankcase tightly articulated with a dome of coupling / converter of rotation that extends the life of the starter and clutch (on models with Manual transmission). At the bottom of the dome plug coupling is provided, allowing periodically draining moisture accumulating in the crankcase / oil.





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