The elements of the oil system are removed for replacement, as well as for repair

We prepare the car for the task and install it on the observation ditch or lift

Removal and installation of lubrication system sensors

We remove the front mudguard of the engine

 Снятие и установка элементов маслосистемы УАЗ-3151, -31512, -31514, -31519

To remove the oil pressure indicator sensor, unscrew the screw fixing the tip of the sensor wire with a screwdriver

On the UMZ engine, the sensor is located under the generator

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Using the key on 17 unscrew the sensor

Removing the sensor

We put a new sensor and connect the tip of the wire to it

Removal of the emergency oil pressure warning lamp sensor

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Disconnect the sensor wire pad

Unscrew the sensor with the key on 22, holding the fitting with the key on 19

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We remove the sensor

Unscrew the screw fixing the tip of the wire to the sensor and remove the wire

When installing the sensor, we apply a sealant to its threaded part

Replacing the oil cooler faucet

Disconnect the oil radiator hose as described in the article "removing the oil radiator"

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Unscrew the crane with a key for 19 (the generator is removed in the picture)

We remove the oil radiator faucet

We install the crane in the reverse order. Before installation, a sealant is applied to the threaded part of the crane.

Removing and installing the oil pump drive

We remove the ignition distributor sensor

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With the key on 13, unscrew the two nuts securing the drive housing to the cylinder block

Removing the drive from the cylinder block

 Снятие и установка элементов маслосистемы УАЗ-3151, -31512, -31514, -31519

The drive is sealed with a gasket. We replace the gasket before installation

Installation

We install the TDC in the first cylinder

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Turn the drive roller by 45°, as shown in the picture, and install the drive in the cylinder block

The roller will return to its original position, its slot will become parallel to the longitudinal axis of the engine and relative to the center of the roller will be shifted outward.

To check the correct connection of the oil pump roller with the drive roller, scroll the crankshaft with the starter. There should be no outside knocking.

We install the distributor sensor and adjust the ignition

Removing and installing the crankcase pan

We remove the mudguards of the engine

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With the help of the head on 13, we unscrew twenty-one nuts for fixing the pallet

Removing the pallet

 Снятие и установка элементов маслосистемы УАЗ-3151, -31512, -31514, -31519

Disconnect the gasket from the pallet

We install the pallet in reverse order. We apply sealant on both sides of the gasket.

Removal and disassembly of the oil pump

We remove the sump tray as described above

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With the head on 13, unscrew the two nuts of the pump attachment

Removing the oil pump

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Unscrew the four bolts securing the oil intake with a key for 12

We remove the oil intake and the pump cover.

A gasket is installed between the lid and the oil intake

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Removing the drive gear

Remove the driven gear

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Using pliers, we remove the cotter pin and remove the adjusting washers

Removing the spring

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We take out the plunger of the reduction valve

After that, all the parts are washed and inspected for defects

Using a probe, we measure the gap between the gear teeth and the housing

The gap should not be more than 0.2 mm

We assemble the pump in reverse order. Lubricate the internal parts with engine oil.

Install the pump in reverse order.